/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem16_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:13:48,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:13:48,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:13:49,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:13:49,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:13:49,112 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:13:49,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:13:49,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:13:49,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:13:49,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:13:49,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:13:49,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:13:49,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:13:49,115 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:13:49,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:13:49,115 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:13:49,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:13:49,117 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:13:49,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:13:49,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:13:49,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:13:49,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:13:49,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:13:49,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:13:49,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:13:49,118 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:13:49,119 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:13:49,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:13:49,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:13:49,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:13:49,336 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:13:49,338 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:13:49,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label33.c [2023-04-01 23:13:50,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:13:50,796 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:13:50,796 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c [2023-04-01 23:13:50,827 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3925f5984/9c7d92628fd94cd5b3bb58ece1c9c3cb/FLAG1ac2911d9 [2023-04-01 23:13:50,843 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3925f5984/9c7d92628fd94cd5b3bb58ece1c9c3cb [2023-04-01 23:13:50,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:13:50,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:13:50,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:13:50,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:13:50,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:13:50,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:13:50" (1/1) ... [2023-04-01 23:13:50,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8066989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:50, skipping insertion in model container [2023-04-01 23:13:50,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:13:50" (1/1) ... [2023-04-01 23:13:50,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:13:50,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:13:51,126 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c[3017,3030] [2023-04-01 23:13:51,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:13:51,478 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:13:51,506 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c[3017,3030] [2023-04-01 23:13:51,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:13:51,716 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:13:51,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51 WrapperNode [2023-04-01 23:13:51,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:13:51,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:13:51,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:13:51,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:13:51,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:13:51,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:13:51,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:13:51,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:13:51,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (1/1) ... [2023-04-01 23:13:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:13:51,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:51,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:13:51,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:13:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:13:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:13:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:13:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:13:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:13:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:13:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:13:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:13:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:13:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:13:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:13:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:13:52,069 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:13:52,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:13:53,977 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:13:53,992 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:13:53,993 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:13:53,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:13:53 BoogieIcfgContainer [2023-04-01 23:13:53,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:13:53,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:13:53,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:13:54,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:13:54,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:13:50" (1/3) ... [2023-04-01 23:13:54,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48dcf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:13:54, skipping insertion in model container [2023-04-01 23:13:54,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:13:51" (2/3) ... [2023-04-01 23:13:54,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48dcf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:13:54, skipping insertion in model container [2023-04-01 23:13:54,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:13:53" (3/3) ... [2023-04-01 23:13:54,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label33.c [2023-04-01 23:13:54,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:13:54,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:13:54,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:13:54,095 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7521527a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:13:54,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:13:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:13:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-01 23:13:54,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:54,112 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:13:54,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:54,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1653874196, now seen corresponding path program 1 times [2023-04-01 23:13:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011713559] [2023-04-01 23:13:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:13:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011713559] [2023-04-01 23:13:54,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011713559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:13:54,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:13:54,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:13:54,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132437353] [2023-04-01 23:13:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:13:54,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:13:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:13:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:13:54,636 INFO L87 Difference]: Start difference. First operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:13:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:13:57,258 INFO L93 Difference]: Finished difference Result 1184 states and 2180 transitions. [2023-04-01 23:13:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:13:57,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 33 [2023-04-01 23:13:57,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:13:57,286 INFO L225 Difference]: With dead ends: 1184 [2023-04-01 23:13:57,286 INFO L226 Difference]: Without dead ends: 696 [2023-04-01 23:13:57,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:13:57,299 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1130 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:13:57,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 26 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 23:13:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-04-01 23:13:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2023-04-01 23:13:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 674 states have (on average 1.6869436201780414) internal successors, (1137), 676 states have internal predecessors, (1137), 6 states have call successors, (6), 6 states have call predecessors, (6), 8 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 23:13:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1155 transitions. [2023-04-01 23:13:57,388 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1155 transitions. Word has length 33 [2023-04-01 23:13:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:13:57,389 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1155 transitions. [2023-04-01 23:13:57,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:13:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1155 transitions. [2023-04-01 23:13:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-01 23:13:57,393 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:57,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:13:57,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:13:57,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:57,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2103443744, now seen corresponding path program 1 times [2023-04-01 23:13:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74116086] [2023-04-01 23:13:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:57,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:13:57,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74116086] [2023-04-01 23:13:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74116086] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:13:57,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:13:57,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:13:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261655163] [2023-04-01 23:13:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:13:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:13:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:13:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:13:57,818 INFO L87 Difference]: Start difference. First operand 689 states and 1155 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:14:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:00,275 INFO L93 Difference]: Finished difference Result 2094 states and 3563 transitions. [2023-04-01 23:14:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:14:00,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2023-04-01 23:14:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:00,283 INFO L225 Difference]: With dead ends: 2094 [2023-04-01 23:14:00,283 INFO L226 Difference]: Without dead ends: 1411 [2023-04-01 23:14:00,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:14:00,285 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2482 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:00,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 65 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:14:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2023-04-01 23:14:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1384. [2023-04-01 23:14:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1352 states have (on average 1.6050295857988166) internal successors, (2170), 1360 states have internal predecessors, (2170), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) [2023-04-01 23:14:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2228 transitions. [2023-04-01 23:14:00,334 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2228 transitions. Word has length 103 [2023-04-01 23:14:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:00,334 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2228 transitions. [2023-04-01 23:14:00,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:14:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2228 transitions. [2023-04-01 23:14:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-01 23:14:00,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:00,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:00,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:14:00,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:00,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash -425030973, now seen corresponding path program 1 times [2023-04-01 23:14:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774081724] [2023-04-01 23:14:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:00,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:14:00,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:00,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774081724] [2023-04-01 23:14:00,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774081724] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:00,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:14:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:14:00,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309569403] [2023-04-01 23:14:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:00,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:14:00,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:14:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:14:00,594 INFO L87 Difference]: Start difference. First operand 1384 states and 2228 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:14:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:02,814 INFO L93 Difference]: Finished difference Result 3492 states and 5644 transitions. [2023-04-01 23:14:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:14:02,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 104 [2023-04-01 23:14:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:02,824 INFO L225 Difference]: With dead ends: 3492 [2023-04-01 23:14:02,824 INFO L226 Difference]: Without dead ends: 2114 [2023-04-01 23:14:02,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:14:02,828 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1338 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:02,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 58 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:14:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2023-04-01 23:14:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2092. [2023-04-01 23:14:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2038 states have (on average 1.3223748773307165) internal successors, (2695), 2054 states have internal predecessors, (2695), 14 states have call successors, (14), 14 states have call predecessors, (14), 39 states have return successors, (90), 23 states have call predecessors, (90), 13 states have call successors, (90) [2023-04-01 23:14:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2799 transitions. [2023-04-01 23:14:02,900 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2799 transitions. Word has length 104 [2023-04-01 23:14:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:02,900 INFO L495 AbstractCegarLoop]: Abstraction has 2092 states and 2799 transitions. [2023-04-01 23:14:02,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:14:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2799 transitions. [2023-04-01 23:14:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-01 23:14:02,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:02,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:14:02,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:02,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash -996284613, now seen corresponding path program 1 times [2023-04-01 23:14:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239668482] [2023-04-01 23:14:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:14:03,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239668482] [2023-04-01 23:14:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239668482] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:14:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:14:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470377368] [2023-04-01 23:14:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:03,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:14:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:14:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:14:03,484 INFO L87 Difference]: Start difference. First operand 2092 states and 2799 transitions. Second operand has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:14:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:06,505 INFO L93 Difference]: Finished difference Result 8365 states and 11560 transitions. [2023-04-01 23:14:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:14:06,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 196 [2023-04-01 23:14:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:06,541 INFO L225 Difference]: With dead ends: 8365 [2023-04-01 23:14:06,541 INFO L226 Difference]: Without dead ends: 6279 [2023-04-01 23:14:06,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:14:06,554 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2819 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:06,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2819 Valid, 67 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 23:14:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2023-04-01 23:14:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 6265. [2023-04-01 23:14:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6265 states, 6105 states have (on average 1.2314496314496315) internal successors, (7518), 6166 states have internal predecessors, (7518), 38 states have call successors, (38), 38 states have call predecessors, (38), 121 states have return successors, (503), 60 states have call predecessors, (503), 37 states have call successors, (503) [2023-04-01 23:14:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 8059 transitions. [2023-04-01 23:14:06,719 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 8059 transitions. Word has length 196 [2023-04-01 23:14:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:06,721 INFO L495 AbstractCegarLoop]: Abstraction has 6265 states and 8059 transitions. [2023-04-01 23:14:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:14:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 8059 transitions. [2023-04-01 23:14:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-04-01 23:14:06,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:06,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:06,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 23:14:06,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:06,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash 933351096, now seen corresponding path program 1 times [2023-04-01 23:14:06,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547638833] [2023-04-01 23:14:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:14:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-04-01 23:14:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:07,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547638833] [2023-04-01 23:14:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547638833] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448590712] [2023-04-01 23:14:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:07,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:07,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:07,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:14:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:07,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:14:07,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 23:14:07,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:14:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448590712] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:14:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:14:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908993046] [2023-04-01 23:14:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:07,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:14:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:14:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:14:07,784 INFO L87 Difference]: Start difference. First operand 6265 states and 8059 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:14:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:09,020 INFO L93 Difference]: Finished difference Result 12524 states and 16121 transitions. [2023-04-01 23:14:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:14:09,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 377 [2023-04-01 23:14:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:09,051 INFO L225 Difference]: With dead ends: 12524 [2023-04-01 23:14:09,051 INFO L226 Difference]: Without dead ends: 6265 [2023-04-01 23:14:09,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:14:09,066 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 323 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:09,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 578 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 23:14:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2023-04-01 23:14:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 5928. [2023-04-01 23:14:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 5772 states have (on average 1.2082467082467083) internal successors, (6974), 5833 states have internal predecessors, (6974), 36 states have call successors, (36), 36 states have call predecessors, (36), 119 states have return successors, (427), 58 states have call predecessors, (427), 35 states have call successors, (427) [2023-04-01 23:14:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 7437 transitions. [2023-04-01 23:14:09,258 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 7437 transitions. Word has length 377 [2023-04-01 23:14:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:09,259 INFO L495 AbstractCegarLoop]: Abstraction has 5928 states and 7437 transitions. [2023-04-01 23:14:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:14:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 7437 transitions. [2023-04-01 23:14:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-04-01 23:14:09,270 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:09,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-04-01 23:14:09,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:14:09,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:09,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:09,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:09,478 INFO L85 PathProgramCache]: Analyzing trace with hash -677426480, now seen corresponding path program 1 times [2023-04-01 23:14:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:09,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538889970] [2023-04-01 23:14:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:09,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:14:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-01 23:14:10,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538889970] [2023-04-01 23:14:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538889970] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017653050] [2023-04-01 23:14:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:10,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:10,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:10,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:10,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:14:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:10,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:14:10,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-04-01 23:14:10,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:14:10,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017653050] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:10,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:14:10,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 23:14:10,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013311888] [2023-04-01 23:14:10,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:10,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:14:10,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:10,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:14:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:14:10,716 INFO L87 Difference]: Start difference. First operand 5928 states and 7437 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:14:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:11,794 INFO L93 Difference]: Finished difference Result 7954 states and 9742 transitions. [2023-04-01 23:14:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:14:11,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 497 [2023-04-01 23:14:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:11,827 INFO L225 Difference]: With dead ends: 7954 [2023-04-01 23:14:11,828 INFO L226 Difference]: Without dead ends: 7952 [2023-04-01 23:14:11,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:14:11,835 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 336 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:11,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 182 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 23:14:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2023-04-01 23:14:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 6267. [2023-04-01 23:14:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6267 states, 6106 states have (on average 1.2056993121519817) internal successors, (7362), 6168 states have internal predecessors, (7362), 38 states have call successors, (38), 38 states have call predecessors, (38), 122 states have return successors, (454), 60 states have call predecessors, (454), 37 states have call successors, (454) [2023-04-01 23:14:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 7854 transitions. [2023-04-01 23:14:12,022 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 7854 transitions. Word has length 497 [2023-04-01 23:14:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:12,023 INFO L495 AbstractCegarLoop]: Abstraction has 6267 states and 7854 transitions. [2023-04-01 23:14:12,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:14:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 7854 transitions. [2023-04-01 23:14:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-04-01 23:14:12,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:12,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:12,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:12,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 23:14:12,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:12,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash -62738736, now seen corresponding path program 1 times [2023-04-01 23:14:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:12,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122947189] [2023-04-01 23:14:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:14:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2023-04-01 23:14:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 194 proven. 114 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-04-01 23:14:12,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122947189] [2023-04-01 23:14:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122947189] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62309611] [2023-04-01 23:14:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:12,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:12,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:12,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:12,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:14:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:13,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:14:13,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 23:14:13,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:14:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 195 proven. 115 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-04-01 23:14:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62309611] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:14:13,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:14:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:14:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330394999] [2023-04-01 23:14:13,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:14:13,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:14:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:14:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:14:13,683 INFO L87 Difference]: Start difference. First operand 6267 states and 7854 transitions. Second operand has 12 states, 12 states have (on average 59.25) internal successors, (711), 10 states have internal predecessors, (711), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:14:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:17,785 INFO L93 Difference]: Finished difference Result 16660 states and 21342 transitions. [2023-04-01 23:14:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 23:14:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 59.25) internal successors, (711), 10 states have internal predecessors, (711), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 513 [2023-04-01 23:14:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:17,821 INFO L225 Difference]: With dead ends: 16660 [2023-04-01 23:14:17,821 INFO L226 Difference]: Without dead ends: 10399 [2023-04-01 23:14:17,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1040 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:14:17,834 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3844 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:17,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3844 Valid, 110 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 4566 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 23:14:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10399 states. [2023-04-01 23:14:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10399 to 10383. [2023-04-01 23:14:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10383 states, 10141 states have (on average 1.1729612464254018) internal successors, (11895), 10230 states have internal predecessors, (11895), 62 states have call successors, (62), 62 states have call predecessors, (62), 179 states have return successors, (797), 90 states have call predecessors, (797), 61 states have call successors, (797) [2023-04-01 23:14:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10383 states to 10383 states and 12754 transitions. [2023-04-01 23:14:18,067 INFO L78 Accepts]: Start accepts. Automaton has 10383 states and 12754 transitions. Word has length 513 [2023-04-01 23:14:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:18,067 INFO L495 AbstractCegarLoop]: Abstraction has 10383 states and 12754 transitions. [2023-04-01 23:14:18,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 59.25) internal successors, (711), 10 states have internal predecessors, (711), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:14:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10383 states and 12754 transitions. [2023-04-01 23:14:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-04-01 23:14:18,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:18,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:18,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:14:18,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:18,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:18,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2087871092, now seen corresponding path program 1 times [2023-04-01 23:14:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:18,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795227360] [2023-04-01 23:14:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:14:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:14:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 470 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-01 23:14:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795227360] [2023-04-01 23:14:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795227360] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459747177] [2023-04-01 23:14:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:19,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:19,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:14:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:19,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:14:19,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 472 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-01 23:14:19,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:14:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 472 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-01 23:14:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459747177] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:14:20,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:14:20,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:14:20,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847006960] [2023-04-01 23:14:20,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:14:20,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:14:20,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:14:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:14:20,209 INFO L87 Difference]: Start difference. First operand 10383 states and 12754 transitions. Second operand has 12 states, 12 states have (on average 72.66666666666667) internal successors, (872), 10 states have internal predecessors, (872), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:14:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:23,852 INFO L93 Difference]: Finished difference Result 32706 states and 40920 transitions. [2023-04-01 23:14:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:14:23,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 72.66666666666667) internal successors, (872), 10 states have internal predecessors, (872), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 675 [2023-04-01 23:14:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:23,902 INFO L225 Difference]: With dead ends: 32706 [2023-04-01 23:14:23,902 INFO L226 Difference]: Without dead ends: 17772 [2023-04-01 23:14:23,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1363 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:14:23,928 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2655 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 1502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2663 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1502 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:23,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2663 Valid, 115 Invalid, 5659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1502 Valid, 4157 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 23:14:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17772 states. [2023-04-01 23:14:24,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17772 to 14691. [2023-04-01 23:14:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14691 states, 14425 states have (on average 1.0449220103986134) internal successors, (15073), 14503 states have internal predecessors, (15073), 88 states have call successors, (88), 88 states have call predecessors, (88), 177 states have return successors, (681), 99 states have call predecessors, (681), 87 states have call successors, (681) [2023-04-01 23:14:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14691 states to 14691 states and 15842 transitions. [2023-04-01 23:14:24,207 INFO L78 Accepts]: Start accepts. Automaton has 14691 states and 15842 transitions. Word has length 675 [2023-04-01 23:14:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:24,209 INFO L495 AbstractCegarLoop]: Abstraction has 14691 states and 15842 transitions. [2023-04-01 23:14:24,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.66666666666667) internal successors, (872), 10 states have internal predecessors, (872), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:14:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 14691 states and 15842 transitions. [2023-04-01 23:14:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2023-04-01 23:14:24,238 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:24,239 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:24,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:24,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:24,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:24,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1182648624, now seen corresponding path program 1 times [2023-04-01 23:14:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:24,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563011930] [2023-04-01 23:14:24,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:24,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:14:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:14:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-04-01 23:14:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2023-04-01 23:14:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 589 proven. 321 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2023-04-01 23:14:26,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563011930] [2023-04-01 23:14:26,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563011930] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678513707] [2023-04-01 23:14:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:26,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:26,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:26,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:26,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:14:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:27,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:14:27,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2023-04-01 23:14:27,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:14:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678513707] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:14:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 23:14:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338897400] [2023-04-01 23:14:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:14:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:14:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:14:27,289 INFO L87 Difference]: Start difference. First operand 14691 states and 15842 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:14:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:28,115 INFO L93 Difference]: Finished difference Result 29039 states and 31335 transitions. [2023-04-01 23:14:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:14:28,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1075 [2023-04-01 23:14:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:28,159 INFO L225 Difference]: With dead ends: 29039 [2023-04-01 23:14:28,159 INFO L226 Difference]: Without dead ends: 14691 [2023-04-01 23:14:28,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 1085 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:14:28,187 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 343 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:28,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 412 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 23:14:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14691 states. [2023-04-01 23:14:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14691 to 14691. [2023-04-01 23:14:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14691 states, 14425 states have (on average 1.0429809358752167) internal successors, (15045), 14503 states have internal predecessors, (15045), 88 states have call successors, (88), 88 states have call predecessors, (88), 177 states have return successors, (653), 99 states have call predecessors, (653), 87 states have call successors, (653) [2023-04-01 23:14:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14691 states to 14691 states and 15786 transitions. [2023-04-01 23:14:28,442 INFO L78 Accepts]: Start accepts. Automaton has 14691 states and 15786 transitions. Word has length 1075 [2023-04-01 23:14:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:28,443 INFO L495 AbstractCegarLoop]: Abstraction has 14691 states and 15786 transitions. [2023-04-01 23:14:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:14:28,444 INFO L276 IsEmpty]: Start isEmpty. Operand 14691 states and 15786 transitions. [2023-04-01 23:14:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2023-04-01 23:14:28,473 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:28,473 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:28,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:28,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:28,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:28,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2094774109, now seen corresponding path program 1 times [2023-04-01 23:14:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620952120] [2023-04-01 23:14:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:14:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-04-01 23:14:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-04-01 23:14:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-04-01 23:14:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 802 [2023-04-01 23:14:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:14:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2039 backedges. 165 proven. 6 refuted. 0 times theorem prover too weak. 1868 trivial. 0 not checked. [2023-04-01 23:14:29,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:29,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620952120] [2023-04-01 23:14:29,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620952120] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:29,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80587326] [2023-04-01 23:14:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:29,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:29,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:29,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:14:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:30,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:14:30,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2039 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 1868 trivial. 0 not checked. [2023-04-01 23:14:30,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:14:30,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80587326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:30,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:14:30,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:14:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979333013] [2023-04-01 23:14:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:30,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:14:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:14:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:14:30,217 INFO L87 Difference]: Start difference. First operand 14691 states and 15786 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:14:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:31,016 INFO L93 Difference]: Finished difference Result 29039 states and 31227 transitions. [2023-04-01 23:14:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:14:31,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1122 [2023-04-01 23:14:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:31,060 INFO L225 Difference]: With dead ends: 29039 [2023-04-01 23:14:31,060 INFO L226 Difference]: Without dead ends: 14691 [2023-04-01 23:14:31,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:14:31,083 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 338 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:31,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 75 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 23:14:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14691 states. [2023-04-01 23:14:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14691 to 14354. [2023-04-01 23:14:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14354 states, 14092 states have (on average 1.0386034629577066) internal successors, (14636), 14170 states have internal predecessors, (14636), 86 states have call successors, (86), 86 states have call predecessors, (86), 175 states have return successors, (583), 97 states have call predecessors, (583), 85 states have call successors, (583) [2023-04-01 23:14:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14354 states to 14354 states and 15305 transitions. [2023-04-01 23:14:31,311 INFO L78 Accepts]: Start accepts. Automaton has 14354 states and 15305 transitions. Word has length 1122 [2023-04-01 23:14:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:31,312 INFO L495 AbstractCegarLoop]: Abstraction has 14354 states and 15305 transitions. [2023-04-01 23:14:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:14:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 14354 states and 15305 transitions. [2023-04-01 23:14:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2023-04-01 23:14:31,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:31,352 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:31,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 23:14:31,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:31,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:31,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1162101577, now seen corresponding path program 1 times [2023-04-01 23:14:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:31,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637252176] [2023-04-01 23:14:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:14:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:14:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-04-01 23:14:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 979 [2023-04-01 23:14:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1144 [2023-04-01 23:14:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 623 proven. 585 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2023-04-01 23:14:33,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:33,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637252176] [2023-04-01 23:14:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637252176] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63446004] [2023-04-01 23:14:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:33,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:33,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:33,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:33,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:14:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:34,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:14:34,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 1052 proven. 0 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2023-04-01 23:14:35,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:14:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63446004] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:14:35,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:14:35,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:14:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263617197] [2023-04-01 23:14:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:14:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:14:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:14:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:14:35,085 INFO L87 Difference]: Start difference. First operand 14354 states and 15305 transitions. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 4 states have internal predecessors, (526), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:14:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:36,314 INFO L93 Difference]: Finished difference Result 29396 states and 31360 transitions. [2023-04-01 23:14:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:14:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 4 states have internal predecessors, (526), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1342 [2023-04-01 23:14:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:36,363 INFO L225 Difference]: With dead ends: 29396 [2023-04-01 23:14:36,364 INFO L226 Difference]: Without dead ends: 15385 [2023-04-01 23:14:36,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1352 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:14:36,383 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 524 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:36,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 84 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 23:14:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15385 states. [2023-04-01 23:14:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15385 to 15375. [2023-04-01 23:14:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15375 states, 15096 states have (on average 1.036764705882353) internal successors, (15651), 15179 states have internal predecessors, (15651), 92 states have call successors, (92), 92 states have call predecessors, (92), 186 states have return successors, (619), 103 states have call predecessors, (619), 91 states have call successors, (619) [2023-04-01 23:14:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15375 states to 15375 states and 16362 transitions. [2023-04-01 23:14:36,633 INFO L78 Accepts]: Start accepts. Automaton has 15375 states and 16362 transitions. Word has length 1342 [2023-04-01 23:14:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:36,633 INFO L495 AbstractCegarLoop]: Abstraction has 15375 states and 16362 transitions. [2023-04-01 23:14:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 4 states have internal predecessors, (526), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:14:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15375 states and 16362 transitions. [2023-04-01 23:14:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1582 [2023-04-01 23:14:36,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:36,688 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:36,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:36,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:36,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:36,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1876441456, now seen corresponding path program 1 times [2023-04-01 23:14:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310257792] [2023-04-01 23:14:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:14:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-04-01 23:14:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-04-01 23:14:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2023-04-01 23:14:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1218 [2023-04-01 23:14:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1383 [2023-04-01 23:14:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4286 backedges. 438 proven. 1018 refuted. 0 times theorem prover too weak. 2830 trivial. 0 not checked. [2023-04-01 23:14:39,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310257792] [2023-04-01 23:14:39,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310257792] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928664487] [2023-04-01 23:14:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:39,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:39,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:14:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:40,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 23:14:40,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4286 backedges. 2090 proven. 2 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2023-04-01 23:14:40,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:14:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4286 backedges. 205 proven. 2002 refuted. 0 times theorem prover too weak. 2079 trivial. 0 not checked. [2023-04-01 23:14:44,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928664487] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:14:44,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:14:44,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:14:44,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039062602] [2023-04-01 23:14:44,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:14:44,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:14:44,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:14:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:14:44,469 INFO L87 Difference]: Start difference. First operand 15375 states and 16362 transitions. Second operand has 14 states, 14 states have (on average 93.35714285714286) internal successors, (1307), 12 states have internal predecessors, (1307), 6 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:14:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:49,943 INFO L93 Difference]: Finished difference Result 36520 states and 38988 transitions. [2023-04-01 23:14:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-01 23:14:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 93.35714285714286) internal successors, (1307), 12 states have internal predecessors, (1307), 6 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 1581 [2023-04-01 23:14:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:49,995 INFO L225 Difference]: With dead ends: 36520 [2023-04-01 23:14:49,996 INFO L226 Difference]: Without dead ends: 21488 [2023-04-01 23:14:50,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3248 GetRequests, 3203 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=421, Invalid=1741, Unknown=0, NotChecked=0, Total=2162 [2023-04-01 23:14:50,020 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7516 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6056 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7518 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 6492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 6056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:50,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7518 Valid, 170 Invalid, 6492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 6056 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-01 23:14:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21488 states. [2023-04-01 23:14:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21488 to 19462. [2023-04-01 23:14:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19462 states, 19115 states have (on average 1.0316505362280932) internal successors, (19720), 19215 states have internal predecessors, (19720), 116 states have call successors, (116), 116 states have call predecessors, (116), 230 states have return successors, (714), 130 states have call predecessors, (714), 115 states have call successors, (714) [2023-04-01 23:14:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19462 states to 19462 states and 20550 transitions. [2023-04-01 23:14:50,368 INFO L78 Accepts]: Start accepts. Automaton has 19462 states and 20550 transitions. Word has length 1581 [2023-04-01 23:14:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:50,369 INFO L495 AbstractCegarLoop]: Abstraction has 19462 states and 20550 transitions. [2023-04-01 23:14:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 93.35714285714286) internal successors, (1307), 12 states have internal predecessors, (1307), 6 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:14:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 19462 states and 20550 transitions. [2023-04-01 23:14:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1822 [2023-04-01 23:14:50,413 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:50,415 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:14:50,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:50,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:14:50,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:50,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash 938003852, now seen corresponding path program 1 times [2023-04-01 23:14:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:50,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232215563] [2023-04-01 23:14:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:50,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:14:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:14:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:52,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:14:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:52,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2023-04-01 23:14:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2023-04-01 23:14:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:53,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1138 [2023-04-01 23:14:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1392 [2023-04-01 23:14:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1623 [2023-04-01 23:14:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6035 backedges. 1084 proven. 731 refuted. 0 times theorem prover too weak. 4220 trivial. 0 not checked. [2023-04-01 23:14:53,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:53,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232215563] [2023-04-01 23:14:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232215563] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:53,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574568504] [2023-04-01 23:14:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:53,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:53,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:53,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:53,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:14:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:53,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:14:53,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6035 backedges. 4144 proven. 2 refuted. 0 times theorem prover too weak. 1889 trivial. 0 not checked. [2023-04-01 23:14:54,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:14:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6035 backedges. 1091 proven. 723 refuted. 0 times theorem prover too weak. 4221 trivial. 0 not checked. [2023-04-01 23:14:58,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574568504] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:14:58,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:14:58,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:14:58,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140702040] [2023-04-01 23:14:58,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:14:58,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:14:58,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:14:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:14:58,427 INFO L87 Difference]: Start difference. First operand 19462 states and 20550 transitions. Second operand has 14 states, 14 states have (on average 95.85714285714286) internal successors, (1342), 12 states have internal predecessors, (1342), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:15:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:02,370 INFO L93 Difference]: Finished difference Result 38920 states and 41101 transitions. [2023-04-01 23:15:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 23:15:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 95.85714285714286) internal successors, (1342), 12 states have internal predecessors, (1342), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 1821 [2023-04-01 23:15:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:02,413 INFO L225 Difference]: With dead ends: 38920 [2023-04-01 23:15:02,414 INFO L226 Difference]: Without dead ends: 19803 [2023-04-01 23:15:02,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3711 GetRequests, 3676 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=994, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 23:15:02,437 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4095 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 6667 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 6970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 6667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:02,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4096 Valid, 169 Invalid, 6970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 6667 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 23:15:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2023-04-01 23:15:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 19125. [2023-04-01 23:15:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19125 states, 18782 states have (on average 1.031306570120328) internal successors, (19370), 18882 states have internal predecessors, (19370), 114 states have call successors, (114), 114 states have call predecessors, (114), 228 states have return successors, (695), 128 states have call predecessors, (695), 113 states have call successors, (695) [2023-04-01 23:15:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19125 states to 19125 states and 20179 transitions. [2023-04-01 23:15:02,744 INFO L78 Accepts]: Start accepts. Automaton has 19125 states and 20179 transitions. Word has length 1821 [2023-04-01 23:15:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:02,746 INFO L495 AbstractCegarLoop]: Abstraction has 19125 states and 20179 transitions. [2023-04-01 23:15:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 95.85714285714286) internal successors, (1342), 12 states have internal predecessors, (1342), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:15:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 19125 states and 20179 transitions. [2023-04-01 23:15:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2019 [2023-04-01 23:15:02,793 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:02,794 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:02,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 23:15:03,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:15:03,003 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:03,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1005077797, now seen corresponding path program 1 times [2023-04-01 23:15:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548891518] [2023-04-01 23:15:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:03,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:15:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:15:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:15:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-04-01 23:15:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2023-04-01 23:15:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2023-04-01 23:15:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:15:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1335 [2023-04-01 23:15:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1589 [2023-04-01 23:15:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1820 [2023-04-01 23:15:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 1655 proven. 412 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2023-04-01 23:15:06,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:06,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548891518] [2023-04-01 23:15:06,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548891518] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:15:06,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969423788] [2023-04-01 23:15:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:06,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:15:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:15:06,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:15:06,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:15:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:06,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:15:06,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:15:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 4303 proven. 2 refuted. 0 times theorem prover too weak. 2956 trivial. 0 not checked. [2023-04-01 23:15:06,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:15:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 762 proven. 567 refuted. 0 times theorem prover too weak. 5932 trivial. 0 not checked. [2023-04-01 23:15:07,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969423788] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:15:07,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:15:07,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:15:07,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463243791] [2023-04-01 23:15:07,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:15:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:15:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:15:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:15:07,698 INFO L87 Difference]: Start difference. First operand 19125 states and 20179 transitions. Second operand has 15 states, 15 states have (on average 73.66666666666667) internal successors, (1105), 13 states have internal predecessors, (1105), 6 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:15:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:15,739 INFO L93 Difference]: Finished difference Result 41969 states and 44400 transitions. [2023-04-01 23:15:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-01 23:15:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 73.66666666666667) internal successors, (1105), 13 states have internal predecessors, (1105), 6 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 2018 [2023-04-01 23:15:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:15,787 INFO L225 Difference]: With dead ends: 41969 [2023-04-01 23:15:15,787 INFO L226 Difference]: Without dead ends: 23189 [2023-04-01 23:15:15,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4173 GetRequests, 4103 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=859, Invalid=4111, Unknown=0, NotChecked=0, Total=4970 [2023-04-01 23:15:15,809 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 4840 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 12207 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4840 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 12698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 12207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:15,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4840 Valid, 320 Invalid, 12698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 12207 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 23:15:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23189 states. [2023-04-01 23:15:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23189 to 22170. [2023-04-01 23:15:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22170 states, 21785 states have (on average 1.0276795960523295) internal successors, (22388), 21891 states have internal predecessors, (22388), 132 states have call successors, (132), 132 states have call predecessors, (132), 252 states have return successors, (737), 146 states have call predecessors, (737), 131 states have call successors, (737) [2023-04-01 23:15:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22170 states to 22170 states and 23257 transitions. [2023-04-01 23:15:16,194 INFO L78 Accepts]: Start accepts. Automaton has 22170 states and 23257 transitions. Word has length 2018 [2023-04-01 23:15:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:16,195 INFO L495 AbstractCegarLoop]: Abstraction has 22170 states and 23257 transitions. [2023-04-01 23:15:16,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 73.66666666666667) internal successors, (1105), 13 states have internal predecessors, (1105), 6 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:15:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 22170 states and 23257 transitions. [2023-04-01 23:15:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2155 [2023-04-01 23:15:16,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:16,250 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:16,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:15:16,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:15:16,460 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:16,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:16,461 INFO L85 PathProgramCache]: Analyzing trace with hash -32166897, now seen corresponding path program 1 times [2023-04-01 23:15:16,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:16,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918924792] [2023-04-01 23:15:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:15:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:15:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:15:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2023-04-01 23:15:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2023-04-01 23:15:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1127 [2023-04-01 23:15:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1400 [2023-04-01 23:15:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1471 [2023-04-01 23:15:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1725 [2023-04-01 23:15:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1956 [2023-04-01 23:15:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8666 backedges. 1505 proven. 737 refuted. 0 times theorem prover too weak. 6424 trivial. 0 not checked. [2023-04-01 23:15:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918924792] [2023-04-01 23:15:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918924792] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:15:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361500144] [2023-04-01 23:15:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:19,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:15:19,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:15:19,739 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:15:19,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:15:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:20,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:15:20,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:37,929 WARN L223 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 521 DAG size of output: 264 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 23:16:57,751 WARN L223 SmtUtils]: Spent 18.44s on a formula simplification that was a NOOP. DAG size: 260 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 23:17:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8666 backedges. 5747 proven. 75 refuted. 0 times theorem prover too weak. 2844 trivial. 0 not checked. [2023-04-01 23:17:00,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8666 backedges. 883 proven. 209 refuted. 0 times theorem prover too weak. 7574 trivial. 0 not checked. [2023-04-01 23:17:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361500144] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:04,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 17 [2023-04-01 23:17:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077211923] [2023-04-01 23:17:04,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:04,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 23:17:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 23:17:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:17:04,658 INFO L87 Difference]: Start difference. First operand 22170 states and 23257 transitions. Second operand has 17 states, 17 states have (on average 72.3529411764706) internal successors, (1230), 15 states have internal predecessors, (1230), 7 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13)