/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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:16:21,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:16:21,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:16:21,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:16:22,050 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 23:16:22,078 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:16:22,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:16:22,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:16:22,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:16:22,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:16:22,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:16:22,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:16:22,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:16:22,081 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:16:22,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:16:22,082 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:16:22,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:16:22,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:16:22,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:16:22,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:16:22,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:16:22,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:16:22,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:16:22,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:16:22,085 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:16:22,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:16:22,085 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:16:22,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:16:22,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:16:22,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:16:22,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:16:22,346 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:16:22,346 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:16:22,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label46.c [2023-04-01 23:16:23,424 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:16:23,744 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:16:23,744 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label46.c [2023-04-01 23:16:23,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b227407a/2ca83e16b64b4964bd9aeb407d68328d/FLAG03d76b93f [2023-04-01 23:16:23,781 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b227407a/2ca83e16b64b4964bd9aeb407d68328d [2023-04-01 23:16:23,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:16:23,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:16:23,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:16:23,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:16:23,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:16:23,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:16:23" (1/1) ... [2023-04-01 23:16:23,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4535d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:23, skipping insertion in model container [2023-04-01 23:16:23,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:16:23" (1/1) ... [2023-04-01 23:16:23,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:16:23,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:16:24,033 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_label46.c[1899,1912] [2023-04-01 23:16:24,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:16:24,377 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:16:24,389 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_label46.c[1899,1912] [2023-04-01 23:16:24,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:16:24,656 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:16:24,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24 WrapperNode [2023-04-01 23:16:24,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:16:24,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:16:24,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:16:24,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:16:24,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:16:24,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:16:24,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:16:24,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:16:24,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (1/1) ... [2023-04-01 23:16:24,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:16:24,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:24,847 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 23:16:24,873 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 23:16:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:16:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:16:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:16:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:16:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:16:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:16:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:16:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:16:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:16:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:16:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:16:24,971 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:16:24,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:16:26,829 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:16:26,847 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:16:26,847 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:16:26,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:16:26 BoogieIcfgContainer [2023-04-01 23:16:26,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:16:26,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:16:26,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:16:26,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:16:26,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:16:23" (1/3) ... [2023-04-01 23:16:26,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ae8034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:16:26, skipping insertion in model container [2023-04-01 23:16:26,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:16:24" (2/3) ... [2023-04-01 23:16:26,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ae8034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:16:26, skipping insertion in model container [2023-04-01 23:16:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:16:26" (3/3) ... [2023-04-01 23:16:26,861 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2023-04-01 23:16:26,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:16:26,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:16:26,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:16:26,957 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;@36602dd1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:16:26,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:16:26,965 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 23:16:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 23:16:26,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:26,973 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] [2023-04-01 23:16:26,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:26,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1195556255, now seen corresponding path program 1 times [2023-04-01 23:16:26,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:26,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388205363] [2023-04-01 23:16:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:26,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:27,357 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 23:16:27,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:27,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388205363] [2023-04-01 23:16:27,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388205363] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:16:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:16:27,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350560589] [2023-04-01 23:16:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:27,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:16:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:16:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:16:27,401 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 5 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 23:16:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:30,950 INFO L93 Difference]: Finished difference Result 1515 states and 2850 transitions. [2023-04-01 23:16:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:16:30,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-04-01 23:16:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:30,969 INFO L225 Difference]: With dead ends: 1515 [2023-04-01 23:16:30,970 INFO L226 Difference]: Without dead ends: 1038 [2023-04-01 23:16:30,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:16:30,983 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1848 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 848 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 41 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [848 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 23:16:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-04-01 23:16:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2023-04-01 23:16:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1010 states have (on average 1.5594059405940595) internal successors, (1575), 1013 states have internal predecessors, (1575), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (24), 9 states have call predecessors, (24), 7 states have call successors, (24) [2023-04-01 23:16:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1607 transitions. [2023-04-01 23:16:31,080 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1607 transitions. Word has length 22 [2023-04-01 23:16:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:31,081 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1607 transitions. [2023-04-01 23:16:31,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 23:16:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1607 transitions. [2023-04-01 23:16:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 23:16:31,084 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:31,084 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:16:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:16:31,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:31,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1832153416, now seen corresponding path program 1 times [2023-04-01 23:16:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:31,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875859800] [2023-04-01 23:16:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:16:31,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875859800] [2023-04-01 23:16:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875859800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:16:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:16:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532764997] [2023-04-01 23:16:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:31,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:16:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:16:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:16:31,439 INFO L87 Difference]: Start difference. First operand 1031 states and 1607 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 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 23:16:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:33,716 INFO L93 Difference]: Finished difference Result 3121 states and 4935 transitions. [2023-04-01 23:16:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:16:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 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 94 [2023-04-01 23:16:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:33,730 INFO L225 Difference]: With dead ends: 3121 [2023-04-01 23:16:33,731 INFO L226 Difference]: Without dead ends: 2096 [2023-04-01 23:16:33,738 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 23:16:33,743 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1399 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:33,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 58 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:16:33,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2023-04-01 23:16:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2078. [2023-04-01 23:16:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2030 states have (on average 1.4059113300492612) internal successors, (2854), 2042 states have internal predecessors, (2854), 14 states have call successors, (14), 14 states have call predecessors, (14), 33 states have return successors, (88), 21 states have call predecessors, (88), 13 states have call successors, (88) [2023-04-01 23:16:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2956 transitions. [2023-04-01 23:16:33,846 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2956 transitions. Word has length 94 [2023-04-01 23:16:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:33,847 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2956 transitions. [2023-04-01 23:16:33,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 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 23:16:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2956 transitions. [2023-04-01 23:16:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-04-01 23:16:33,862 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:33,862 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:33,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:16:33,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:33,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:33,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1731361093, now seen corresponding path program 1 times [2023-04-01 23:16:33,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:33,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664235397] [2023-04-01 23:16:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:33,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 23:16:34,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664235397] [2023-04-01 23:16:34,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664235397] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585569693] [2023-04-01 23:16:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:34,692 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 23:16:34,712 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 23:16:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:34,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:34,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:16:34,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:34,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585569693] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:34,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:34,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-04-01 23:16:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972280311] [2023-04-01 23:16:34,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:34,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:16:34,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:34,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:16:34,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:16:34,958 INFO L87 Difference]: Start difference. First operand 2078 states and 2956 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:16:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:36,054 INFO L93 Difference]: Finished difference Result 3103 states and 4280 transitions. [2023-04-01 23:16:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:16:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 261 [2023-04-01 23:16:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:36,068 INFO L225 Difference]: With dead ends: 3103 [2023-04-01 23:16:36,068 INFO L226 Difference]: Without dead ends: 3101 [2023-04-01 23:16:36,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:16:36,071 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 347 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:36,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 184 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 23:16:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2023-04-01 23:16:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2756. [2023-04-01 23:16:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2698 states have (on average 1.3899184581171238) internal successors, (3750), 2712 states have internal predecessors, (3750), 18 states have call successors, (18), 18 states have call predecessors, (18), 39 states have return successors, (119), 25 states have call predecessors, (119), 17 states have call successors, (119) [2023-04-01 23:16:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3887 transitions. [2023-04-01 23:16:36,154 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3887 transitions. Word has length 261 [2023-04-01 23:16:36,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:36,156 INFO L495 AbstractCegarLoop]: Abstraction has 2756 states and 3887 transitions. [2023-04-01 23:16:36,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:16:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3887 transitions. [2023-04-01 23:16:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-01 23:16:36,160 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:36,160 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:36,169 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 23:16:36,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:36,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:36,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1995704793, now seen corresponding path program 1 times [2023-04-01 23:16:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:36,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351372336] [2023-04-01 23:16:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 23:16:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:16:36,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:36,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351372336] [2023-04-01 23:16:36,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351372336] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:36,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102835912] [2023-04-01 23:16:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:36,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:36,857 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 23:16:36,873 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 23:16:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:36,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:37,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:16:37,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:16:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:16:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102835912] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:16:37,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:16:37,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:16:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475713602] [2023-04-01 23:16:37,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:16:37,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:16:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:16:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:16:37,735 INFO L87 Difference]: Start difference. First operand 2756 states and 3887 transitions. Second operand has 11 states, 11 states have (on average 49.27272727272727) internal successors, (542), 9 states have internal predecessors, (542), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:16:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:41,596 INFO L93 Difference]: Finished difference Result 7990 states and 11350 transitions. [2023-04-01 23:16:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 23:16:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 49.27272727272727) internal successors, (542), 9 states have internal predecessors, (542), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 266 [2023-04-01 23:16:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:41,625 INFO L225 Difference]: With dead ends: 7990 [2023-04-01 23:16:41,626 INFO L226 Difference]: Without dead ends: 5240 [2023-04-01 23:16:41,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 538 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2023-04-01 23:16:41,636 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3895 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3895 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 5276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 999 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:41,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3895 Valid, 203 Invalid, 5276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [999 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:16:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5240 states. [2023-04-01 23:16:41,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5240 to 4523. [2023-04-01 23:16:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4523 states, 4409 states have (on average 1.2154683601723746) internal successors, (5359), 4449 states have internal predecessors, (5359), 28 states have call successors, (28), 28 states have call predecessors, (28), 85 states have return successors, (271), 45 states have call predecessors, (271), 27 states have call successors, (271) [2023-04-01 23:16:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 5658 transitions. [2023-04-01 23:16:41,783 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 5658 transitions. Word has length 266 [2023-04-01 23:16:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:41,789 INFO L495 AbstractCegarLoop]: Abstraction has 4523 states and 5658 transitions. [2023-04-01 23:16:41,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.27272727272727) internal successors, (542), 9 states have internal predecessors, (542), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:16:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 5658 transitions. [2023-04-01 23:16:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-04-01 23:16:41,799 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:41,799 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:41,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 23:16:42,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:16:42,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:42,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1933359584, now seen corresponding path program 1 times [2023-04-01 23:16:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:42,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955613327] [2023-04-01 23:16:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-04-01 23:16:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:16:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955613327] [2023-04-01 23:16:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955613327] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560817148] [2023-04-01 23:16:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:42,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:42,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:42,516 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 23:16:42,519 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 23:16:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:42,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:42,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:16:42,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560817148] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:42,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:42,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:16:42,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166056768] [2023-04-01 23:16:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:42,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:16:42,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:16:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:42,773 INFO L87 Difference]: Start difference. First operand 4523 states and 5658 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 23:16:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:43,816 INFO L93 Difference]: Finished difference Result 9040 states and 11310 transitions. [2023-04-01 23:16:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:16:43,816 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 484 [2023-04-01 23:16:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:43,834 INFO L225 Difference]: With dead ends: 9040 [2023-04-01 23:16:43,834 INFO L226 Difference]: Without dead ends: 4523 [2023-04-01 23:16:43,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:43,843 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 355 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:43,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 499 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 23:16:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2023-04-01 23:16:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4523. [2023-04-01 23:16:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4523 states, 4409 states have (on average 1.1853027897482422) internal successors, (5226), 4449 states have internal predecessors, (5226), 28 states have call successors, (28), 28 states have call predecessors, (28), 85 states have return successors, (231), 45 states have call predecessors, (231), 27 states have call successors, (231) [2023-04-01 23:16:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 5485 transitions. [2023-04-01 23:16:43,944 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 5485 transitions. Word has length 484 [2023-04-01 23:16:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:43,945 INFO L495 AbstractCegarLoop]: Abstraction has 4523 states and 5485 transitions. [2023-04-01 23:16:43,945 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 23:16:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 5485 transitions. [2023-04-01 23:16:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2023-04-01 23:16:43,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:43,957 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:43,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:44,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:44,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:44,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -765907564, now seen corresponding path program 1 times [2023-04-01 23:16:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:44,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771331873] [2023-04-01 23:16:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:16:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-01 23:16:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771331873] [2023-04-01 23:16:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771331873] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284523766] [2023-04-01 23:16:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:44,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:44,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:44,807 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 23:16:44,810 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 23:16:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:44,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:44,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-01 23:16:45,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:16:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-01 23:16:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284523766] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:16:45,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:16:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-04-01 23:16:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195582329] [2023-04-01 23:16:45,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:16:45,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:16:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:45,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:16:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:16:45,387 INFO L87 Difference]: Start difference. First operand 4523 states and 5485 transitions. Second operand has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 11 states have internal predecessors, (484), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:16:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:49,746 INFO L93 Difference]: Finished difference Result 15900 states and 19421 transitions. [2023-04-01 23:16:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:16:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 11 states have internal predecessors, (484), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 538 [2023-04-01 23:16:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:49,777 INFO L225 Difference]: With dead ends: 15900 [2023-04-01 23:16:49,778 INFO L226 Difference]: Without dead ends: 8925 [2023-04-01 23:16:49,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1089 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2023-04-01 23:16:49,792 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2655 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6148 mSolverCounterSat, 1155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1155 IncrementalHoareTripleChecker+Valid, 6148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:49,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 161 Invalid, 7303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1155 Valid, 6148 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 23:16:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2023-04-01 23:16:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 7218. [2023-04-01 23:16:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7218 states, 7069 states have (on average 1.0521997453670957) internal successors, (7438), 7119 states have internal predecessors, (7438), 44 states have call successors, (44), 44 states have call predecessors, (44), 104 states have return successors, (307), 54 states have call predecessors, (307), 43 states have call successors, (307) [2023-04-01 23:16:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 7789 transitions. [2023-04-01 23:16:49,962 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 7789 transitions. Word has length 538 [2023-04-01 23:16:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:49,962 INFO L495 AbstractCegarLoop]: Abstraction has 7218 states and 7789 transitions. [2023-04-01 23:16:49,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.23076923076923) internal successors, (484), 11 states have internal predecessors, (484), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:16:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 7789 transitions. [2023-04-01 23:16:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2023-04-01 23:16:49,987 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:49,987 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:50,000 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 23:16:50,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:50,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:50,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2091166725, now seen corresponding path program 1 times [2023-04-01 23:16:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:50,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388794924] [2023-04-01 23:16:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:50,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:16:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:51,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-04-01 23:16:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2023-04-01 23:16:51,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388794924] [2023-04-01 23:16:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388794924] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095780339] [2023-04-01 23:16:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:51,121 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 23:16:51,139 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 23:16:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:51,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:51,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-04-01 23:16:51,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:16:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-04-01 23:16:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095780339] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:16:51,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:16:51,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:16:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064999979] [2023-04-01 23:16:51,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:16:51,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:16:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:16:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:16:51,942 INFO L87 Difference]: Start difference. First operand 7218 states and 7789 transitions. Second operand has 12 states, 12 states have (on average 49.583333333333336) internal successors, (595), 10 states have internal predecessors, (595), 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 23:16:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:54,569 INFO L93 Difference]: Finished difference Result 14452 states and 15615 transitions. [2023-04-01 23:16:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:16:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.583333333333336) internal successors, (595), 10 states have internal predecessors, (595), 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 840 [2023-04-01 23:16:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:54,601 INFO L225 Difference]: With dead ends: 14452 [2023-04-01 23:16:54,601 INFO L226 Difference]: Without dead ends: 7240 [2023-04-01 23:16:54,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1720 GetRequests, 1696 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:16:54,615 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3076 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:54,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3076 Valid, 135 Invalid, 3884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:16:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2023-04-01 23:16:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7220. [2023-04-01 23:16:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 7070 states have (on average 1.0332390381895333) internal successors, (7305), 7121 states have internal predecessors, (7305), 44 states have call successors, (44), 44 states have call predecessors, (44), 105 states have return successors, (221), 54 states have call predecessors, (221), 43 states have call successors, (221) [2023-04-01 23:16:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 7570 transitions. [2023-04-01 23:16:54,761 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 7570 transitions. Word has length 840 [2023-04-01 23:16:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 7220 states and 7570 transitions. [2023-04-01 23:16:54,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.583333333333336) internal successors, (595), 10 states have internal predecessors, (595), 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 23:16:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 7570 transitions. [2023-04-01 23:16:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2023-04-01 23:16:54,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:54,805 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2023-04-01 23:16:54,813 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 23:16:55,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:55,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:55,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1892218329, now seen corresponding path program 1 times [2023-04-01 23:16:55,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:55,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947079557] [2023-04-01 23:16:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:55,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-04-01 23:16:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:16:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2023-04-01 23:16:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-04-01 23:16:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 937 [2023-04-01 23:16:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 349 proven. 530 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2023-04-01 23:16:56,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:56,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947079557] [2023-04-01 23:16:56,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947079557] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:56,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332543988] [2023-04-01 23:16:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:56,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:56,303 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 23:16:56,329 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 23:16:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:16:56,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 859 proven. 0 refuted. 0 times theorem prover too weak. 1765 trivial. 0 not checked. [2023-04-01 23:16:56,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:56,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332543988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:56,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:56,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-04-01 23:16:56,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475287429] [2023-04-01 23:16:56,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:16:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:16:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:16:56,960 INFO L87 Difference]: Start difference. First operand 7220 states and 7570 transitions. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 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 23:16:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:57,910 INFO L93 Difference]: Finished difference Result 15142 states and 15874 transitions. [2023-04-01 23:16:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:16:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 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 1121 [2023-04-01 23:16:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:57,930 INFO L225 Difference]: With dead ends: 15142 [2023-04-01 23:16:57,930 INFO L226 Difference]: Without dead ends: 7928 [2023-04-01 23:16:57,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:16:57,946 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 524 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:57,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 69 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 23:16:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7928 states. [2023-04-01 23:16:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7928 to 7567. [2023-04-01 23:16:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7567 states, 7408 states have (on average 1.0319924406047516) internal successors, (7645), 7464 states have internal predecessors, (7645), 46 states have call successors, (46), 46 states have call predecessors, (46), 112 states have return successors, (235), 56 states have call predecessors, (235), 45 states have call successors, (235) [2023-04-01 23:16:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7567 states to 7567 states and 7926 transitions. [2023-04-01 23:16:58,110 INFO L78 Accepts]: Start accepts. Automaton has 7567 states and 7926 transitions. Word has length 1121 [2023-04-01 23:16:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:58,111 INFO L495 AbstractCegarLoop]: Abstraction has 7567 states and 7926 transitions. [2023-04-01 23:16:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 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 23:16:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7567 states and 7926 transitions. [2023-04-01 23:16:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2023-04-01 23:16:58,134 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:58,135 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:58,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:58,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:58,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:58,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1883665713, now seen corresponding path program 1 times [2023-04-01 23:16:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637052641] [2023-04-01 23:16:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:58,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 23:16:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-04-01 23:16:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-04-01 23:16:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-04-01 23:16:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2023-04-01 23:16:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2023-04-01 23:16:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1184 [2023-04-01 23:16:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 526 proven. 530 refuted. 0 times theorem prover too weak. 2680 trivial. 0 not checked. [2023-04-01 23:16:59,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637052641] [2023-04-01 23:16:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637052641] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983114437] [2023-04-01 23:16:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:59,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:59,834 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 23:16:59,836 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 23:17:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:00,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 23:17:00,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:17:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 1969 proven. 2 refuted. 0 times theorem prover too weak. 1765 trivial. 0 not checked. [2023-04-01 23:17:01,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 145 proven. 1898 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2023-04-01 23:17:05,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983114437] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:05,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:05,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2023-04-01 23:17:05,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81683165] [2023-04-01 23:17:05,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:05,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 23:17:05,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 23:17:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:17:05,704 INFO L87 Difference]: Start difference. First operand 7567 states and 7926 transitions. Second operand has 18 states, 18 states have (on average 89.38888888888889) internal successors, (1609), 16 states have internal predecessors, (1609), 7 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 23:17:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:12,535 INFO L93 Difference]: Finished difference Result 26452 states and 28253 transitions. [2023-04-01 23:17:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-04-01 23:17:12,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 89.38888888888889) internal successors, (1609), 16 states have internal predecessors, (1609), 7 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 1368 [2023-04-01 23:17:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:12,583 INFO L225 Difference]: With dead ends: 26452 [2023-04-01 23:17:12,583 INFO L226 Difference]: Without dead ends: 19230 [2023-04-01 23:17:12,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2853 GetRequests, 2786 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=3774, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 23:17:12,603 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8076 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 8853 mSolverCounterSat, 1565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8076 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 10418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1565 IncrementalHoareTripleChecker+Valid, 8853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:12,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8076 Valid, 278 Invalid, 10418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1565 Valid, 8853 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 23:17:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2023-04-01 23:17:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 16470. [2023-04-01 23:17:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16470 states, 16139 states have (on average 1.0272631513724517) internal successors, (16579), 16258 states have internal predecessors, (16579), 98 states have call successors, (98), 98 states have call predecessors, (98), 232 states have return successors, (544), 113 states have call predecessors, (544), 97 states have call successors, (544) [2023-04-01 23:17:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16470 states to 16470 states and 17221 transitions. [2023-04-01 23:17:13,003 INFO L78 Accepts]: Start accepts. Automaton has 16470 states and 17221 transitions. Word has length 1368 [2023-04-01 23:17:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 16470 states and 17221 transitions. [2023-04-01 23:17:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 89.38888888888889) internal successors, (1609), 16 states have internal predecessors, (1609), 7 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 23:17:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 16470 states and 17221 transitions. [2023-04-01 23:17:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2023-04-01 23:17:13,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:13,037 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:13,047 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 23:17:13,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:13,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:13,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1793244887, now seen corresponding path program 1 times [2023-04-01 23:17:13,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:13,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500884464] [2023-04-01 23:17:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:17:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:17:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:17:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2023-04-01 23:17:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2023-04-01 23:17:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-04-01 23:17:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2023-04-01 23:17:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1077 [2023-04-01 23:17:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1331 [2023-04-01 23:17:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 893 proven. 431 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2023-04-01 23:17:16,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:17:16,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500884464] [2023-04-01 23:17:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500884464] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:17:16,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794045564] [2023-04-01 23:17:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:16,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:16,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:17:16,076 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 23:17:16,081 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 23:17:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:16,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:17:16,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:17:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 1945 proven. 2 refuted. 0 times theorem prover too weak. 1886 trivial. 0 not checked. [2023-04-01 23:17:17,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 145 proven. 1874 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2023-04-01 23:17:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794045564] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:19,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:19,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-04-01 23:17:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719178854] [2023-04-01 23:17:19,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 23:17:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 23:17:19,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:17:19,833 INFO L87 Difference]: Start difference. First operand 16470 states and 17221 transitions. Second operand has 20 states, 20 states have (on average 81.6) internal successors, (1632), 18 states have internal predecessors, (1632), 8 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:17:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:29,341 INFO L93 Difference]: Finished difference Result 38766 states and 40893 transitions. [2023-04-01 23:17:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-04-01 23:17:29,342 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 81.6) internal successors, (1632), 18 states have internal predecessors, (1632), 8 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 1446 [2023-04-01 23:17:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:29,397 INFO L225 Difference]: With dead ends: 38766 [2023-04-01 23:17:29,397 INFO L226 Difference]: Without dead ends: 22641 [2023-04-01 23:17:29,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3083 GetRequests, 2972 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4531 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1583, Invalid=10849, Unknown=0, NotChecked=0, Total=12432 [2023-04-01 23:17:29,425 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 27227 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 9876 mSolverCounterSat, 1685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27227 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 11561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1685 IncrementalHoareTripleChecker+Valid, 9876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:29,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27227 Valid, 374 Invalid, 11561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1685 Valid, 9876 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 23:17:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22641 states. [2023-04-01 23:17:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22641 to 20555. [2023-04-01 23:17:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20555 states, 20156 states have (on average 1.0285274856122246) internal successors, (20731), 20294 states have internal predecessors, (20731), 122 states have call successors, (122), 122 states have call predecessors, (122), 276 states have return successors, (720), 138 states have call predecessors, (720), 121 states have call successors, (720) [2023-04-01 23:17:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20555 states to 20555 states and 21573 transitions. [2023-04-01 23:17:29,902 INFO L78 Accepts]: Start accepts. Automaton has 20555 states and 21573 transitions. Word has length 1446 [2023-04-01 23:17:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:29,903 INFO L495 AbstractCegarLoop]: Abstraction has 20555 states and 21573 transitions. [2023-04-01 23:17:29,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 81.6) internal successors, (1632), 18 states have internal predecessors, (1632), 8 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:17:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 20555 states and 21573 transitions. [2023-04-01 23:17:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1972 [2023-04-01 23:17:29,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:29,956 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 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 23:17:29,969 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 23:17:30,163 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,SelfDestructingSolverStorable9 [2023-04-01 23:17:30,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:30,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1459687030, now seen corresponding path program 1 times [2023-04-01 23:17:30,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:30,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521814163] [2023-04-01 23:17:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:30,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:17:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:17:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:17:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:17:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:17:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-04-01 23:17:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2023-04-01 23:17:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2023-04-01 23:17:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1307 [2023-04-01 23:17:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1572 [2023-04-01 23:17:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1787 [2023-04-01 23:17:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7072 backedges. 1613 proven. 197 refuted. 0 times theorem prover too weak. 5262 trivial. 0 not checked. [2023-04-01 23:17:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:17:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521814163] [2023-04-01 23:17:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521814163] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:17:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351563552] [2023-04-01 23:17:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:33,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:33,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:17:33,637 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 23:17:33,638 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 23:17:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:34,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:17:34,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:17:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7072 backedges. 4218 proven. 2 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2023-04-01 23:17:34,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7072 backedges. 652 proven. 567 refuted. 0 times theorem prover too weak. 5853 trivial. 0 not checked. [2023-04-01 23:17:35,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351563552] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:35,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:35,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:17:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191374924] [2023-04-01 23:17:35,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:35,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:17:35,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:17:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:17:35,329 INFO L87 Difference]: Start difference. First operand 20555 states and 21573 transitions. Second operand has 15 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 13 states have internal predecessors, (1015), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-04-01 23:17:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:42,450 INFO L93 Difference]: Finished difference Result 42807 states and 44988 transitions. [2023-04-01 23:17:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-04-01 23:17:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 13 states have internal predecessors, (1015), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 1971 [2023-04-01 23:17:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:42,499 INFO L225 Difference]: With dead ends: 42807 [2023-04-01 23:17:42,499 INFO L226 Difference]: Without dead ends: 22597 [2023-04-01 23:17:42,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4055 GetRequests, 3995 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=536, Invalid=3124, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 23:17:42,526 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 3449 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 10951 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3455 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 11361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 10951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:42,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3455 Valid, 421 Invalid, 11361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 10951 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 23:17:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22597 states. [2023-04-01 23:17:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22597 to 21229. [2023-04-01 23:17:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21229 states, 20822 states have (on average 1.0236288540966285) internal successors, (21314), 20960 states have internal predecessors, (21314), 126 states have call successors, (126), 126 states have call predecessors, (126), 280 states have return successors, (637), 142 states have call predecessors, (637), 125 states have call successors, (637) [2023-04-01 23:17:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21229 states to 21229 states and 22077 transitions. [2023-04-01 23:17:42,897 INFO L78 Accepts]: Start accepts. Automaton has 21229 states and 22077 transitions. Word has length 1971 [2023-04-01 23:17:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:42,898 INFO L495 AbstractCegarLoop]: Abstraction has 21229 states and 22077 transitions. [2023-04-01 23:17:42,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 13 states have internal predecessors, (1015), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-04-01 23:17:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 21229 states and 22077 transitions. [2023-04-01 23:17:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2387 [2023-04-01 23:17:42,976 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:42,977 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 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, 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, 10, 10, 10, 10, 10, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:42,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:17:43,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:43,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:43,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash 585474648, now seen corresponding path program 1 times [2023-04-01 23:17:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931861948] [2023-04-01 23:17:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:17:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:17:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:17:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:17:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:17:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2023-04-01 23:17:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 915 [2023-04-01 23:17:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2023-04-01 23:17:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1275 [2023-04-01 23:17:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1559 [2023-04-01 23:17:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1813 [2023-04-01 23:17:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1978 [2023-04-01 23:17:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:17:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2300 [2023-04-01 23:17:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10113 backedges. 966 proven. 25 refuted. 0 times theorem prover too weak. 9122 trivial. 0 not checked. [2023-04-01 23:17:45,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:17:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931861948] [2023-04-01 23:17:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931861948] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:17:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792257985] [2023-04-01 23:17:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:45,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:17:45,332 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 23:17:45,335 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 23:17:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:46,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:17:46,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:17:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10113 backedges. 984 proven. 18 refuted. 0 times theorem prover too weak. 9111 trivial. 0 not checked. [2023-04-01 23:17:46,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10113 backedges. 1000 proven. 2 refuted. 0 times theorem prover too weak. 9111 trivial. 0 not checked. [2023-04-01 23:17:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792257985] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:47,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 16 [2023-04-01 23:17:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323580267] [2023-04-01 23:17:47,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:17:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:17:47,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:17:47,145 INFO L87 Difference]: Start difference. First operand 21229 states and 22077 transitions. Second operand has 16 states, 16 states have (on average 35.25) internal successors, (564), 14 states have internal predecessors, (564), 7 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:17:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:52,639 INFO L93 Difference]: Finished difference Result 45172 states and 46971 transitions. [2023-04-01 23:17:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 23:17:52,640 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 35.25) internal successors, (564), 14 states have internal predecessors, (564), 7 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) Word has length 2386 [2023-04-01 23:17:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:52,707 INFO L225 Difference]: With dead ends: 45172 [2023-04-01 23:17:52,707 INFO L226 Difference]: Without dead ends: 24288 [2023-04-01 23:17:52,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4823 GetRequests, 4800 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2023-04-01 23:17:52,739 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4309 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 6969 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 7288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 6969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:52,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 132 Invalid, 7288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 6969 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 23:17:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24288 states. [2023-04-01 23:17:53,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24288 to 21576. [2023-04-01 23:17:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21576 states, 21160 states have (on average 1.023109640831758) internal successors, (21649), 21303 states have internal predecessors, (21649), 128 states have call successors, (128), 128 states have call predecessors, (128), 287 states have return successors, (637), 144 states have call predecessors, (637), 127 states have call successors, (637) [2023-04-01 23:17:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21576 states to 21576 states and 22414 transitions. [2023-04-01 23:17:53,246 INFO L78 Accepts]: Start accepts. Automaton has 21576 states and 22414 transitions. Word has length 2386 [2023-04-01 23:17:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 21576 states and 22414 transitions. [2023-04-01 23:17:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 35.25) internal successors, (564), 14 states have internal predecessors, (564), 7 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 23:17:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21576 states and 22414 transitions. [2023-04-01 23:17:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2494 [2023-04-01 23:17:53,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:53,314 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 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, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:53,327 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 23:17:53,524 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,SelfDestructingSolverStorable11 [2023-04-01 23:17:53,525 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:53,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 59669122, now seen corresponding path program 1 times [2023-04-01 23:17:53,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:53,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259915000] [2023-04-01 23:17:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:18:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:18:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:18:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:18:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:18:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2023-04-01 23:18:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 915 [2023-04-01 23:18:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2023-04-01 23:18:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1275 [2023-04-01 23:18:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1559 [2023-04-01 23:18:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1813 [2023-04-01 23:18:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1978 [2023-04-01 23:18:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:01,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:18:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2309 [2023-04-01 23:18:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11030 backedges. 1553 proven. 4869 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2023-04-01 23:18:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:18:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259915000] [2023-04-01 23:18:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259915000] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:18:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112556729] [2023-04-01 23:18:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:01,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:18:01,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:18:01,984 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 23:18:01,987 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 23:18:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:02,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:18:02,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:18:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11030 backedges. 7451 proven. 10 refuted. 0 times theorem prover too weak. 3569 trivial. 0 not checked. [2023-04-01 23:18:03,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:18:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11030 backedges. 1816 proven. 585 refuted. 0 times theorem prover too weak. 8629 trivial. 0 not checked. [2023-04-01 23:18:07,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112556729] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:18:07,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:18:07,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 5] total 25 [2023-04-01 23:18:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744891474] [2023-04-01 23:18:07,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:18:07,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 23:18:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:18:07,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 23:18:07,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:18:07,251 INFO L87 Difference]: Start difference. First operand 21576 states and 22414 transitions. Second operand has 25 states, 25 states have (on average 84.6) internal successors, (2115), 23 states have internal predecessors, (2115), 9 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2023-04-01 23:18:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:18:21,373 INFO L93 Difference]: Finished difference Result 47973 states and 50021 transitions. [2023-04-01 23:18:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-04-01 23:18:21,374 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 84.6) internal successors, (2115), 23 states have internal predecessors, (2115), 9 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 2493 [2023-04-01 23:18:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:18:21,438 INFO L225 Difference]: With dead ends: 47973 [2023-04-01 23:18:21,439 INFO L226 Difference]: Without dead ends: 26742 [2023-04-01 23:18:21,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5177 GetRequests, 5063 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4444 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1505, Invalid=11605, Unknown=0, NotChecked=0, Total=13110 [2023-04-01 23:18:21,468 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 15468 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 18731 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15475 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 19427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 18731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:18:21,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15475 Valid, 592 Invalid, 19427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [696 Valid, 18731 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-04-01 23:18:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26742 states. [2023-04-01 23:18:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26742 to 24640. [2023-04-01 23:18:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24640 states, 24174 states have (on average 1.0220898485976668) internal successors, (24708), 24328 states have internal predecessors, (24708), 146 states have call successors, (146), 146 states have call predecessors, (146), 319 states have return successors, (717), 165 states have call predecessors, (717), 145 states have call successors, (717) [2023-04-01 23:18:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24640 states to 24640 states and 25571 transitions. [2023-04-01 23:18:22,004 INFO L78 Accepts]: Start accepts. Automaton has 24640 states and 25571 transitions. Word has length 2493 [2023-04-01 23:18:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:18:22,005 INFO L495 AbstractCegarLoop]: Abstraction has 24640 states and 25571 transitions. [2023-04-01 23:18:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.6) internal successors, (2115), 23 states have internal predecessors, (2115), 9 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2023-04-01 23:18:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24640 states and 25571 transitions. [2023-04-01 23:18:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2702 [2023-04-01 23:18:22,075 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:18:22,076 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:22,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:18:22,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:18:22,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:18:22,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:18:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1397699369, now seen corresponding path program 1 times [2023-04-01 23:18:22,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:18:22,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066720914] [2023-04-01 23:18:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:22,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:18:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:18:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:18:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:18:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-04-01 23:18:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:18:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2023-04-01 23:18:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2023-04-01 23:18:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2023-04-01 23:18:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2023-04-01 23:18:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1302 [2023-04-01 23:18:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1412 [2023-04-01 23:18:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1696 [2023-04-01 23:18:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1767 [2023-04-01 23:18:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2021 [2023-04-01 23:18:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2186 [2023-04-01 23:18:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:18:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2517 [2023-04-01 23:18:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13996 backedges. 2024 proven. 1852 refuted. 0 times theorem prover too weak. 10120 trivial. 0 not checked. [2023-04-01 23:18:26,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:18:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066720914] [2023-04-01 23:18:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066720914] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:18:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587943902] [2023-04-01 23:18:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:26,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:18:26,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:18:26,969 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:18:26,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:18:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:27,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 3408 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:18:27,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:18:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13996 backedges. 6726 proven. 2 refuted. 0 times theorem prover too weak. 7268 trivial. 0 not checked. [2023-04-01 23:18:27,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:18:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13996 backedges. 747 proven. 908 refuted. 0 times theorem prover too weak. 12341 trivial. 0 not checked. [2023-04-01 23:18:29,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587943902] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:18:29,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:18:29,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 23:18:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007750816] [2023-04-01 23:18:29,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:18:29,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:18:29,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:18:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:18:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:18:29,131 INFO L87 Difference]: Start difference. First operand 24640 states and 25571 transitions. Second operand has 16 states, 16 states have (on average 78.3125) internal successors, (1253), 14 states have internal predecessors, (1253), 7 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-04-01 23:18:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:18:36,395 INFO L93 Difference]: Finished difference Result 49974 states and 51927 transitions. [2023-04-01 23:18:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-01 23:18:36,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 78.3125) internal successors, (1253), 14 states have internal predecessors, (1253), 7 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 2701 [2023-04-01 23:18:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:18:36,454 INFO L225 Difference]: With dead ends: 49974 [2023-04-01 23:18:36,454 INFO L226 Difference]: Without dead ends: 25679 [2023-04-01 23:18:36,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5553 GetRequests, 5482 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=696, Invalid=4416, Unknown=0, NotChecked=0, Total=5112 [2023-04-01 23:18:36,486 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 6003 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 12253 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6013 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 12686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 12253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:18:36,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6013 Valid, 459 Invalid, 12686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 12253 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-01 23:18:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25679 states. [2023-04-01 23:18:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25679 to 25300. [2023-04-01 23:18:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25300 states, 24833 states have (on average 1.0156646397938227) internal successors, (25222), 24980 states have internal predecessors, (25222), 150 states have call successors, (150), 150 states have call predecessors, (150), 316 states have return successors, (558), 169 states have call predecessors, (558), 149 states have call successors, (558) [2023-04-01 23:18:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25300 states to 25300 states and 25930 transitions. [2023-04-01 23:18:36,935 INFO L78 Accepts]: Start accepts. Automaton has 25300 states and 25930 transitions. Word has length 2701 [2023-04-01 23:18:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:18:36,936 INFO L495 AbstractCegarLoop]: Abstraction has 25300 states and 25930 transitions. [2023-04-01 23:18:36,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.3125) internal successors, (1253), 14 states have internal predecessors, (1253), 7 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-04-01 23:18:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 25300 states and 25930 transitions. [2023-04-01 23:18:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2720 [2023-04-01 23:18:37,005 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:18:37,006 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:37,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:18:37,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:18:37,220 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:18:37,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:18:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1159417862, now seen corresponding path program 1 times [2023-04-01 23:18:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:18:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982527452] [2023-04-01 23:18:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:18:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:18:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:18:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 23:18:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2023-04-01 23:18:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2023-04-01 23:18:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2023-04-01 23:18:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2023-04-01 23:18:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2023-04-01 23:18:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1320 [2023-04-01 23:18:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1430 [2023-04-01 23:18:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1714 [2023-04-01 23:18:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1785 [2023-04-01 23:18:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2039 [2023-04-01 23:18:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2204 [2023-04-01 23:18:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:18:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2535 [2023-04-01 23:18:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13888 backedges. 1822 proven. 961 refuted. 0 times theorem prover too weak. 11105 trivial. 0 not checked. [2023-04-01 23:18:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:18:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982527452] [2023-04-01 23:18:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982527452] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:18:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591862096] [2023-04-01 23:18:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:41,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:18:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:18:41,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:18:41,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:18:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:41,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 3392 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:18:41,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:18:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13888 backedges. 8344 proven. 2 refuted. 0 times theorem prover too weak. 5542 trivial. 0 not checked. [2023-04-01 23:18:43,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:18:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13888 backedges. 1811 proven. 936 refuted. 0 times theorem prover too weak. 11141 trivial. 0 not checked. [2023-04-01 23:18:46,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591862096] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:18:46,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:18:46,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 23:18:46,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797204605] [2023-04-01 23:18:46,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:18:46,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:18:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:18:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:18:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:18:46,598 INFO L87 Difference]: Start difference. First operand 25300 states and 25930 transitions. Second operand has 13 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 11 states have internal predecessors, (1531), 6 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-01 23:18:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:18:51,298 INFO L93 Difference]: Finished difference Result 50983 states and 52305 transitions. [2023-04-01 23:18:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 23:18:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 11 states have internal predecessors, (1531), 6 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 2719 [2023-04-01 23:18:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:18:51,348 INFO L225 Difference]: With dead ends: 50983 [2023-04-01 23:18:51,348 INFO L226 Difference]: Without dead ends: 26028 [2023-04-01 23:18:51,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5518 GetRequests, 5484 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 23:18:51,377 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2694 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 6224 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 6493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 6224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:18:51,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 264 Invalid, 6493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 6224 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 23:18:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26028 states. [2023-04-01 23:18:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26028 to 25976. [2023-04-01 23:18:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25976 states, 25500 states have (on average 1.015372549019608) internal successors, (25892), 25648 states have internal predecessors, (25892), 154 states have call successors, (154), 154 states have call predecessors, (154), 321 states have return successors, (565), 173 states have call predecessors, (565), 153 states have call successors, (565) [2023-04-01 23:18:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25976 states to 25976 states and 26611 transitions. [2023-04-01 23:18:51,890 INFO L78 Accepts]: Start accepts. Automaton has 25976 states and 26611 transitions. Word has length 2719 [2023-04-01 23:18:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:18:51,891 INFO L495 AbstractCegarLoop]: Abstraction has 25976 states and 26611 transitions. [2023-04-01 23:18:51,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 11 states have internal predecessors, (1531), 6 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-01 23:18:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 25976 states and 26611 transitions. [2023-04-01 23:18:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2881 [2023-04-01 23:18:51,954 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:18:51,956 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 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, 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, 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, 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, 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, 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, 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] [2023-04-01 23:18:51,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:18:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:18:52,166 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:18:52,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:18:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1715124865, now seen corresponding path program 1 times [2023-04-01 23:18:52,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:18:52,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420115717] [2023-04-01 23:18:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:18:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:18:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:18:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:18:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-04-01 23:18:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:18:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 802 [2023-04-01 23:18:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 917 [2023-04-01 23:18:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:18:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1244 [2023-04-01 23:18:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1318 [2023-04-01 23:18:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1591 [2023-04-01 23:18:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1875 [2023-04-01 23:18:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1946 [2023-04-01 23:18:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2200 [2023-04-01 23:18:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2365 [2023-04-01 23:18:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:18:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2696 [2023-04-01 23:18:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14103 backedges. 2178 proven. 2523 refuted. 0 times theorem prover too weak. 9402 trivial. 0 not checked. [2023-04-01 23:18:58,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:18:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420115717] [2023-04-01 23:18:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420115717] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:18:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540020771] [2023-04-01 23:18:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:18:58,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:18:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:18:58,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:18:58,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:18:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:18:58,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 3573 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:18:58,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:19:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14103 backedges. 9831 proven. 10 refuted. 0 times theorem prover too weak. 4262 trivial. 0 not checked. [2023-04-01 23:19:05,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:19:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14103 backedges. 1929 proven. 936 refuted. 0 times theorem prover too weak. 11238 trivial. 0 not checked. [2023-04-01 23:19:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540020771] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:19:13,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:19:13,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 5] total 21 [2023-04-01 23:19:13,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972942706] [2023-04-01 23:19:13,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:19:13,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 23:19:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:19:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 23:19:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:19:13,628 INFO L87 Difference]: Start difference. First operand 25976 states and 26611 transitions. Second operand has 21 states, 21 states have (on average 95.38095238095238) internal successors, (2003), 19 states have internal predecessors, (2003), 8 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-04-01 23:19:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:19:39,509 INFO L93 Difference]: Finished difference Result 54693 states and 56050 transitions. [2023-04-01 23:19:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-04-01 23:19:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 95.38095238095238) internal successors, (2003), 19 states have internal predecessors, (2003), 8 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 2880 [2023-04-01 23:19:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:19:39,560 INFO L225 Difference]: With dead ends: 54693 [2023-04-01 23:19:39,561 INFO L226 Difference]: Without dead ends: 29062 [2023-04-01 23:19:39,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5989 GetRequests, 5860 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5975 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=2383, Invalid=14387, Unknown=0, NotChecked=0, Total=16770 [2023-04-01 23:19:39,574 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 6724 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 28623 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6739 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 29447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 28623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:19:39,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6739 Valid, 631 Invalid, 29447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [824 Valid, 28623 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-04-01 23:19:39,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29062 states. [2023-04-01 23:19:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29062 to 25652. [2023-04-01 23:19:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25652 states, 25175 states have (on average 1.014061569016882) internal successors, (25529), 25325 states have internal predecessors, (25529), 152 states have call successors, (152), 152 states have call predecessors, (152), 324 states have return successors, (529), 174 states have call predecessors, (529), 151 states have call successors, (529) [2023-04-01 23:19:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25652 states to 25652 states and 26210 transitions. [2023-04-01 23:19:39,966 INFO L78 Accepts]: Start accepts. Automaton has 25652 states and 26210 transitions. Word has length 2880 [2023-04-01 23:19:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:19:39,967 INFO L495 AbstractCegarLoop]: Abstraction has 25652 states and 26210 transitions. [2023-04-01 23:19:39,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 95.38095238095238) internal successors, (2003), 19 states have internal predecessors, (2003), 8 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-04-01 23:19:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 25652 states and 26210 transitions. [2023-04-01 23:19:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2911 [2023-04-01 23:19:40,025 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:19:40,026 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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] [2023-04-01 23:19:40,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-04-01 23:19:40,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:19:40,226 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:19:40,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:19:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 352234021, now seen corresponding path program 1 times [2023-04-01 23:19:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:19:40,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158955542] [2023-04-01 23:19:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:19:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:19:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 23:19:41,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 23:19:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 23:19:44,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-01 23:19:44,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 23:19:44,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 23:19:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 23:19:44,557 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:19:44,564 INFO L178 ceAbstractionStarter]: Computing trace abstraction results