./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/gcd02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 15:17:54,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 15:17:54,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 15:17:54,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 15:17:54,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 15:17:54,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 15:17:54,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 15:17:54,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 15:17:54,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 15:17:54,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 15:17:54,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 15:17:54,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 15:17:54,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 15:17:54,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 15:17:54,501 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 15:17:54,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 15:17:54,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 15:17:54,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 15:17:54,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 15:17:54,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 15:17:54,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 15:17:54,507 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 15:17:54,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 15:17:54,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 15:17:54,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 15:17:54,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 15:17:54,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 15:17:54,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 15:17:54,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 15:17:54,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 15:17:54,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 15:17:54,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 15:17:54,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:17:54,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 15:17:54,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 15:17:54,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 15:17:54,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 15:17:54,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 15:17:54,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 15:17:54,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 15:17:54,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 15:17:54,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 15:17:54,513 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 [2024-11-08 15:17:54,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 15:17:54,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 15:17:54,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 15:17:54,790 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 15:17:54,790 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 15:17:54,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd02.c [2024-11-08 15:17:56,269 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 15:17:56,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 15:17:56,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c [2024-11-08 15:17:56,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038885416/fa8b93fcfe0d4d7ba9945cc32e364418/FLAG18e0c3805 [2024-11-08 15:17:56,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038885416/fa8b93fcfe0d4d7ba9945cc32e364418 [2024-11-08 15:17:56,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 15:17:56,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 15:17:56,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 15:17:56,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 15:17:56,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 15:17:56,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d487ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56, skipping insertion in model container [2024-11-08 15:17:56,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 15:17:56,690 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2024-11-08 15:17:56,707 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2024-11-08 15:17:56,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:17:56,717 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 15:17:56,729 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2024-11-08 15:17:56,734 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2024-11-08 15:17:56,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:17:56,755 INFO L204 MainTranslator]: Completed translation [2024-11-08 15:17:56,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56 WrapperNode [2024-11-08 15:17:56,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 15:17:56,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 15:17:56,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 15:17:56,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 15:17:56,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,791 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2024-11-08 15:17:56,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 15:17:56,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 15:17:56,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 15:17:56,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 15:17:56,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,826 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-08 15:17:56,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 15:17:56,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 15:17:56,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 15:17:56,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 15:17:56,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (1/1) ... [2024-11-08 15:17:56,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:17:56,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:17:56,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 15:17:56,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 15:17:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 15:17:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2024-11-08 15:17:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2024-11-08 15:17:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 15:17:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 15:17:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2024-11-08 15:17:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2024-11-08 15:17:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 15:17:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 15:17:57,004 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 15:17:57,006 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 15:17:57,157 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 15:17:57,157 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 15:17:57,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 15:17:57,168 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 15:17:57,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:17:57 BoogieIcfgContainer [2024-11-08 15:17:57,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 15:17:57,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 15:17:57,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 15:17:57,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 15:17:57,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:17:56" (1/3) ... [2024-11-08 15:17:57,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b67cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:17:57, skipping insertion in model container [2024-11-08 15:17:57,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:17:56" (2/3) ... [2024-11-08 15:17:57,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b67cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:17:57, skipping insertion in model container [2024-11-08 15:17:57,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:17:57" (3/3) ... [2024-11-08 15:17:57,176 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd02.c [2024-11-08 15:17:57,191 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 15:17:57,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 15:17:57,252 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 15:17:57,258 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@487fbe1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 15:17:57,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 15:17:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 15:17:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 15:17:57,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:57,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:17:57,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:57,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1041033900, now seen corresponding path program 1 times [2024-11-08 15:17:57,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:57,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564259760] [2024-11-08 15:17:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:17:57,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564259760] [2024-11-08 15:17:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564259760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:17:57,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:17:57,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 15:17:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535719782] [2024-11-08 15:17:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:17:57,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 15:17:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:57,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 15:17:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 15:17:57,707 INFO L87 Difference]: Start difference. First operand has 35 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:17:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:17:57,852 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2024-11-08 15:17:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:17:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 15:17:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:17:57,864 INFO L225 Difference]: With dead ends: 79 [2024-11-08 15:17:57,865 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 15:17:57,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:17:57,873 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:17:57,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:17:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 15:17:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-11-08 15:17:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 15:17:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2024-11-08 15:17:57,923 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 9 [2024-11-08 15:17:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:17:57,923 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2024-11-08 15:17:57,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:17:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2024-11-08 15:17:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 15:17:57,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:57,926 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:17:57,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 15:17:57,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:57,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 885541331, now seen corresponding path program 1 times [2024-11-08 15:17:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835314640] [2024-11-08 15:17:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:57,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:17:58,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835314640] [2024-11-08 15:17:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835314640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:17:58,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:17:58,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 15:17:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808443331] [2024-11-08 15:17:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:17:58,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 15:17:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 15:17:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 15:17:58,128 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:17:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:17:58,232 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2024-11-08 15:17:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:17:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 15:17:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:17:58,235 INFO L225 Difference]: With dead ends: 65 [2024-11-08 15:17:58,235 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 15:17:58,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:17:58,237 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:17:58,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 105 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:17:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 15:17:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2024-11-08 15:17:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 15:17:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-08 15:17:58,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 14 [2024-11-08 15:17:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:17:58,258 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-08 15:17:58,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:17:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-08 15:17:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 15:17:58,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:58,260 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:17:58,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 15:17:58,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:58,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 888371476, now seen corresponding path program 1 times [2024-11-08 15:17:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731250144] [2024-11-08 15:17:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:17:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731250144] [2024-11-08 15:17:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731250144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:17:58,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:17:58,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:17:58,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486828205] [2024-11-08 15:17:58,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:17:58,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:17:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:17:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:17:58,418 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:17:58,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:17:58,556 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2024-11-08 15:17:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 15:17:58,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 15:17:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:17:58,558 INFO L225 Difference]: With dead ends: 63 [2024-11-08 15:17:58,558 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 15:17:58,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:17:58,560 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:17:58,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 108 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:17:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 15:17:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2024-11-08 15:17:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 15:17:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-11-08 15:17:58,577 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 14 [2024-11-08 15:17:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:17:58,577 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-11-08 15:17:58,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:17:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-11-08 15:17:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 15:17:58,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:58,579 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:17:58,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 15:17:58,580 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:58,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash 943315870, now seen corresponding path program 1 times [2024-11-08 15:17:58,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:58,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642476770] [2024-11-08 15:17:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:17:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 15:17:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:17:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642476770] [2024-11-08 15:17:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642476770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:17:58,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:17:58,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 15:17:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294913401] [2024-11-08 15:17:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:17:58,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 15:17:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 15:17:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 15:17:58,667 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 15:17:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:17:58,684 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-08 15:17:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 15:17:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-08 15:17:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:17:58,686 INFO L225 Difference]: With dead ends: 55 [2024-11-08 15:17:58,686 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 15:17:58,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 15:17:58,690 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:17:58,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:17:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 15:17:58,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-08 15:17:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-08 15:17:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-08 15:17:58,705 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2024-11-08 15:17:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:17:58,708 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-08 15:17:58,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 15:17:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-08 15:17:58,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 15:17:58,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:58,713 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:17:58,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 15:17:58,714 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash -111049564, now seen corresponding path program 1 times [2024-11-08 15:17:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935886934] [2024-11-08 15:17:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:17:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 15:17:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:17:58,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935886934] [2024-11-08 15:17:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935886934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:17:58,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:17:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 15:17:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89704594] [2024-11-08 15:17:58,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:17:58,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 15:17:58,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:58,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 15:17:58,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:17:58,926 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 15:17:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:17:59,096 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2024-11-08 15:17:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 15:17:59,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-08 15:17:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:17:59,101 INFO L225 Difference]: With dead ends: 69 [2024-11-08 15:17:59,101 INFO L226 Difference]: Without dead ends: 65 [2024-11-08 15:17:59,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:17:59,102 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:17:59,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 125 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:17:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-08 15:17:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2024-11-08 15:17:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.205128205128205) internal successors, (47), 42 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-08 15:17:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-11-08 15:17:59,128 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 21 [2024-11-08 15:17:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:17:59,129 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-11-08 15:17:59,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 15:17:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-11-08 15:17:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 15:17:59,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:59,133 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:17:59,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 15:17:59,134 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:59,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1796458850, now seen corresponding path program 1 times [2024-11-08 15:17:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944975381] [2024-11-08 15:17:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:17:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 15:17:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:17:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:17:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944975381] [2024-11-08 15:17:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944975381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:17:59,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:17:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:17:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401914109] [2024-11-08 15:17:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:17:59,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:17:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:17:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:17:59,270 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 15:17:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:17:59,294 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2024-11-08 15:17:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:17:59,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2024-11-08 15:17:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:17:59,297 INFO L225 Difference]: With dead ends: 64 [2024-11-08 15:17:59,298 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 15:17:59,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:17:59,301 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:17:59,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:17:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 15:17:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-08 15:17:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-08 15:17:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-11-08 15:17:59,313 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2024-11-08 15:17:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:17:59,313 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-11-08 15:17:59,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 15:17:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-11-08 15:17:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 15:17:59,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:17:59,318 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:17:59,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 15:17:59,318 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:17:59,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:17:59,320 INFO L85 PathProgramCache]: Analyzing trace with hash -394254444, now seen corresponding path program 1 times [2024-11-08 15:17:59,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:17:59,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566961501] [2024-11-08 15:17:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:59,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:17:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:17:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 15:17:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:17:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 15:17:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:17:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566961501] [2024-11-08 15:17:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566961501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:17:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108148207] [2024-11-08 15:17:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:17:59,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:17:59,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:17:59,590 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) [2024-11-08 15:17:59,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 15:17:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:17:59,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 15:17:59,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:17:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 15:17:59,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:17:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 15:17:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108148207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:17:59,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:17:59,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2024-11-08 15:17:59,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400169145] [2024-11-08 15:17:59,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:17:59,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 15:17:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:17:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 15:17:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-08 15:17:59,916 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 15:18:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:00,111 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2024-11-08 15:18:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 15:18:00,113 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2024-11-08 15:18:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:00,114 INFO L225 Difference]: With dead ends: 63 [2024-11-08 15:18:00,114 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 15:18:00,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-08 15:18:00,115 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:00,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 141 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:18:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 15:18:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-11-08 15:18:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 15:18:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-08 15:18:00,134 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 28 [2024-11-08 15:18:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:00,134 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-08 15:18:00,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 15:18:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-08 15:18:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 15:18:00,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:00,139 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:18:00,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 15:18:00,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:00,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:00,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1456252584, now seen corresponding path program 1 times [2024-11-08 15:18:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867779421] [2024-11-08 15:18:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:00,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:00,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:00,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 15:18:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:18:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:00,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867779421] [2024-11-08 15:18:00,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867779421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:00,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142770383] [2024-11-08 15:18:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:00,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:00,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:00,529 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) [2024-11-08 15:18:00,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 15:18:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:00,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 15:18:00,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:18:00,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 15:18:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142770383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:01,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:01,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-08 15:18:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337454228] [2024-11-08 15:18:01,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:01,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 15:18:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 15:18:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-08 15:18:01,048 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 20 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 15:18:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:01,261 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2024-11-08 15:18:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 15:18:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2024-11-08 15:18:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:01,263 INFO L225 Difference]: With dead ends: 74 [2024-11-08 15:18:01,263 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 15:18:01,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-08 15:18:01,265 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:01,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 233 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:18:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 15:18:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2024-11-08 15:18:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-08 15:18:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-08 15:18:01,277 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 29 [2024-11-08 15:18:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:01,278 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-08 15:18:01,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 15:18:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-08 15:18:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 15:18:01,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:01,279 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:18:01,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 15:18:01,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 15:18:01,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:01,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1968027976, now seen corresponding path program 1 times [2024-11-08 15:18:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:01,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873791123] [2024-11-08 15:18:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:01,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:01,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:01,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:01,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 15:18:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 15:18:01,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:01,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873791123] [2024-11-08 15:18:01,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873791123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:18:01,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:18:01,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 15:18:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873047500] [2024-11-08 15:18:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:18:01,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 15:18:01,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 15:18:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 15:18:01,713 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 15:18:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:01,876 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2024-11-08 15:18:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 15:18:01,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-11-08 15:18:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:01,877 INFO L225 Difference]: With dead ends: 82 [2024-11-08 15:18:01,878 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 15:18:01,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:18:01,880 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:01,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 163 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:18:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 15:18:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63. [2024-11-08 15:18:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 44 states have internal predecessors, (50), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-08 15:18:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2024-11-08 15:18:01,905 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 29 [2024-11-08 15:18:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:01,905 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2024-11-08 15:18:01,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 15:18:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2024-11-08 15:18:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 15:18:01,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:01,906 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:01,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 15:18:01,906 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:01,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2131452000, now seen corresponding path program 1 times [2024-11-08 15:18:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216140121] [2024-11-08 15:18:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:01,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:02,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:02,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 15:18:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:02,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:18:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216140121] [2024-11-08 15:18:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216140121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959566553] [2024-11-08 15:18:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:02,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:02,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:02,179 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) [2024-11-08 15:18:02,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 15:18:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:02,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 15:18:02,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:18:02,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:18:03,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959566553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:03,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:03,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 21 [2024-11-08 15:18:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41214103] [2024-11-08 15:18:03,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:03,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 15:18:03,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 15:18:03,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-08 15:18:03,027 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 15:18:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:03,281 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2024-11-08 15:18:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 15:18:03,282 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2024-11-08 15:18:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:03,283 INFO L225 Difference]: With dead ends: 89 [2024-11-08 15:18:03,283 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 15:18:03,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-08 15:18:03,284 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:03,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 234 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:18:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 15:18:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2024-11-08 15:18:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (27), 17 states have call predecessors, (27), 11 states have call successors, (27) [2024-11-08 15:18:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2024-11-08 15:18:03,312 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 36 [2024-11-08 15:18:03,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:03,312 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2024-11-08 15:18:03,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 15:18:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2024-11-08 15:18:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 15:18:03,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:03,314 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:03,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 15:18:03,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:03,516 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:03,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -20404480, now seen corresponding path program 1 times [2024-11-08 15:18:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102359181] [2024-11-08 15:18:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:03,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:03,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:03,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 15:18:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:03,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:18:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102359181] [2024-11-08 15:18:03,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102359181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187293966] [2024-11-08 15:18:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:03,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:03,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:03,759 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) [2024-11-08 15:18:03,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 15:18:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:03,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 15:18:03,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:18:03,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:18:04,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187293966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:04,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2024-11-08 15:18:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274682018] [2024-11-08 15:18:04,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:04,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 15:18:04,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 15:18:04,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-08 15:18:04,066 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 15:18:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:04,245 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-08 15:18:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 15:18:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2024-11-08 15:18:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:04,247 INFO L225 Difference]: With dead ends: 86 [2024-11-08 15:18:04,247 INFO L226 Difference]: Without dead ends: 77 [2024-11-08 15:18:04,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-08 15:18:04,248 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:04,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 157 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:18:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-08 15:18:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2024-11-08 15:18:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (26), 16 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-08 15:18:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2024-11-08 15:18:04,267 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 36 [2024-11-08 15:18:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:04,267 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2024-11-08 15:18:04,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 15:18:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2024-11-08 15:18:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 15:18:04,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:04,270 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:04,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 15:18:04,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:04,474 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:04,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash -221289020, now seen corresponding path program 1 times [2024-11-08 15:18:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:04,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372173934] [2024-11-08 15:18:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:04,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:04,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:04,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:04,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:04,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 15:18:04,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372173934] [2024-11-08 15:18:04,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372173934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950405925] [2024-11-08 15:18:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:04,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:04,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:04,765 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) [2024-11-08 15:18:04,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 15:18:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:04,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 15:18:04,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 15:18:05,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 15:18:05,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950405925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:05,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:05,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-08 15:18:05,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467627909] [2024-11-08 15:18:05,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:05,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 15:18:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 15:18:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 15:18:05,906 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 39 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-08 15:18:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:06,582 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-11-08 15:18:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 15:18:06,583 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 37 [2024-11-08 15:18:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:06,584 INFO L225 Difference]: With dead ends: 103 [2024-11-08 15:18:06,584 INFO L226 Difference]: Without dead ends: 99 [2024-11-08 15:18:06,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=325, Invalid=2027, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 15:18:06,585 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:06,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 487 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 15:18:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-08 15:18:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2024-11-08 15:18:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 49 states have internal predecessors, (52), 11 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (23), 14 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-08 15:18:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2024-11-08 15:18:06,604 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 37 [2024-11-08 15:18:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:06,605 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2024-11-08 15:18:06,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-08 15:18:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2024-11-08 15:18:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 15:18:06,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:06,606 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:06,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 15:18:06,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 15:18:06,811 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1786794620, now seen corresponding path program 2 times [2024-11-08 15:18:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:06,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174475081] [2024-11-08 15:18:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:06,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:06,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:06,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:06,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:06,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 15:18:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174475081] [2024-11-08 15:18:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174475081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179694477] [2024-11-08 15:18:07,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 15:18:07,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:07,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:07,018 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) [2024-11-08 15:18:07,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 15:18:07,078 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 15:18:07,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:07,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 15:18:07,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 15:18:07,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 15:18:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179694477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:07,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:07,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 23 [2024-11-08 15:18:07,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669144828] [2024-11-08 15:18:07,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:07,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 15:18:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 15:18:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-11-08 15:18:07,746 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 23 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-08 15:18:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:08,000 INFO L93 Difference]: Finished difference Result 81 states and 105 transitions. [2024-11-08 15:18:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 15:18:08,001 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37 [2024-11-08 15:18:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:08,001 INFO L225 Difference]: With dead ends: 81 [2024-11-08 15:18:08,001 INFO L226 Difference]: Without dead ends: 77 [2024-11-08 15:18:08,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 15:18:08,003 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:08,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 176 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:18:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-08 15:18:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2024-11-08 15:18:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 10 states have call successors, (10), 4 states have call predecessors, (10), 9 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-08 15:18:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2024-11-08 15:18:08,012 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 37 [2024-11-08 15:18:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:08,012 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2024-11-08 15:18:08,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-08 15:18:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2024-11-08 15:18:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 15:18:08,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:08,014 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-08 15:18:08,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 15:18:08,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:08,215 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:08,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash -408680804, now seen corresponding path program 2 times [2024-11-08 15:18:08,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:08,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960429433] [2024-11-08 15:18:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:08,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:08,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:08,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 15:18:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:08,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:08,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:18:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960429433] [2024-11-08 15:18:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960429433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538991718] [2024-11-08 15:18:08,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 15:18:08,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:08,569 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) [2024-11-08 15:18:08,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 15:18:08,635 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 15:18:08,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:08,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 15:18:08,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 15:18:08,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:18:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538991718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:09,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 24 [2024-11-08 15:18:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997447814] [2024-11-08 15:18:09,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:09,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 15:18:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 15:18:09,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-08 15:18:09,123 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-08 15:18:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:09,425 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2024-11-08 15:18:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 15:18:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 43 [2024-11-08 15:18:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:09,427 INFO L225 Difference]: With dead ends: 76 [2024-11-08 15:18:09,427 INFO L226 Difference]: Without dead ends: 67 [2024-11-08 15:18:09,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2024-11-08 15:18:09,428 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:09,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 239 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:18:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-08 15:18:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2024-11-08 15:18:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-08 15:18:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2024-11-08 15:18:09,438 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 43 [2024-11-08 15:18:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:09,438 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2024-11-08 15:18:09,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-08 15:18:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2024-11-08 15:18:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 15:18:09,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:09,439 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-08 15:18:09,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 15:18:09,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:09,640 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:09,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1546973932, now seen corresponding path program 3 times [2024-11-08 15:18:09,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768609449] [2024-11-08 15:18:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:09,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:09,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:09,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:09,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:09,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 15:18:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768609449] [2024-11-08 15:18:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768609449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633673972] [2024-11-08 15:18:09,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 15:18:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:09,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:09,999 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) [2024-11-08 15:18:10,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 15:18:10,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 15:18:10,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:10,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 15:18:10,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:18:10,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:18:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633673972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:11,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:11,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 36 [2024-11-08 15:18:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093989296] [2024-11-08 15:18:11,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:11,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 15:18:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 15:18:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 15:18:11,440 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-08 15:18:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:11,903 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-11-08 15:18:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 15:18:11,904 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) Word has length 44 [2024-11-08 15:18:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:11,904 INFO L225 Difference]: With dead ends: 86 [2024-11-08 15:18:11,905 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 15:18:11,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 15:18:11,906 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:11,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 399 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 15:18:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 15:18:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 67. [2024-11-08 15:18:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 48 states have internal predecessors, (52), 10 states have call successors, (10), 4 states have call predecessors, (10), 10 states have return successors, (21), 14 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-08 15:18:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-11-08 15:18:11,920 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 44 [2024-11-08 15:18:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:11,920 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-11-08 15:18:11,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-08 15:18:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-11-08 15:18:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 15:18:11,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:11,921 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:11,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 15:18:12,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 15:18:12,122 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:12,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash -821509516, now seen corresponding path program 1 times [2024-11-08 15:18:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046696036] [2024-11-08 15:18:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 15:18:12,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046696036] [2024-11-08 15:18:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046696036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958334806] [2024-11-08 15:18:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:12,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:12,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:12,414 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) [2024-11-08 15:18:12,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 15:18:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:12,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 15:18:12,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 15:18:12,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:18:13,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958334806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:13,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:13,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 33 [2024-11-08 15:18:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667848224] [2024-11-08 15:18:13,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:13,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 15:18:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 15:18:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 15:18:13,978 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 33 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-08 15:18:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:14,505 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2024-11-08 15:18:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 15:18:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) Word has length 44 [2024-11-08 15:18:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:14,507 INFO L225 Difference]: With dead ends: 112 [2024-11-08 15:18:14,507 INFO L226 Difference]: Without dead ends: 108 [2024-11-08 15:18:14,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=253, Invalid=1727, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 15:18:14,508 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:14,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 424 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 15:18:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-08 15:18:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2024-11-08 15:18:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 50 states have internal predecessors, (55), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (24), 16 states have call predecessors, (24), 10 states have call successors, (24) [2024-11-08 15:18:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2024-11-08 15:18:14,523 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 44 [2024-11-08 15:18:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:14,523 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2024-11-08 15:18:14,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-08 15:18:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2024-11-08 15:18:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 15:18:14,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:14,525 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:14,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 15:18:14,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 15:18:14,730 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:14,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash 581714612, now seen corresponding path program 2 times [2024-11-08 15:18:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262352702] [2024-11-08 15:18:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:14,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:14,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:14,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:14,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:14,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:14,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 15:18:15,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:15,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262352702] [2024-11-08 15:18:15,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262352702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:15,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129932770] [2024-11-08 15:18:15,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 15:18:15,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:15,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:15,020 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) [2024-11-08 15:18:15,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 15:18:15,086 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 15:18:15,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:15,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 15:18:15,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 15:18:15,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 15:18:15,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129932770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:15,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:15,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 22 [2024-11-08 15:18:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166894097] [2024-11-08 15:18:15,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:15,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 15:18:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 15:18:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-08 15:18:15,829 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-08 15:18:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:16,039 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2024-11-08 15:18:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 15:18:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) Word has length 44 [2024-11-08 15:18:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:16,041 INFO L225 Difference]: With dead ends: 99 [2024-11-08 15:18:16,041 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 15:18:16,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-08 15:18:16,042 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:16,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 277 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:18:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 15:18:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2024-11-08 15:18:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 10 states have call successors, (10), 4 states have call predecessors, (10), 13 states have return successors, (30), 19 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-08 15:18:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-08 15:18:16,055 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 44 [2024-11-08 15:18:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:16,056 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-08 15:18:16,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-08 15:18:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-08 15:18:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 15:18:16,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:16,058 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-08 15:18:16,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 15:18:16,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 15:18:16,259 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:16,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:16,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1844707712, now seen corresponding path program 3 times [2024-11-08 15:18:16,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:16,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377681366] [2024-11-08 15:18:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:16,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 15:18:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:16,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:16,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377681366] [2024-11-08 15:18:16,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377681366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:16,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766505908] [2024-11-08 15:18:16,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 15:18:16,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:16,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:16,648 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) [2024-11-08 15:18:16,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 15:18:16,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 15:18:16,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:16,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 15:18:16,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:17,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 15:18:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766505908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:18,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 41 [2024-11-08 15:18:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632714439] [2024-11-08 15:18:18,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:18,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 15:18:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 15:18:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1499, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 15:18:18,670 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 41 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 30 states have internal predecessors, (81), 14 states have call successors, (16), 1 states have call predecessors, (16), 10 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-08 15:18:19,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:19,262 INFO L93 Difference]: Finished difference Result 170 states and 222 transitions. [2024-11-08 15:18:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 15:18:19,262 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 30 states have internal predecessors, (81), 14 states have call successors, (16), 1 states have call predecessors, (16), 10 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) Word has length 52 [2024-11-08 15:18:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:19,264 INFO L225 Difference]: With dead ends: 170 [2024-11-08 15:18:19,264 INFO L226 Difference]: Without dead ends: 166 [2024-11-08 15:18:19,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=390, Invalid=2690, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 15:18:19,265 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:19,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 514 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 15:18:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-08 15:18:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 80. [2024-11-08 15:18:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 54 states have internal predecessors, (62), 10 states have call successors, (10), 4 states have call predecessors, (10), 13 states have return successors, (30), 21 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-08 15:18:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2024-11-08 15:18:19,281 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 52 [2024-11-08 15:18:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:19,281 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2024-11-08 15:18:19,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 30 states have internal predecessors, (81), 14 states have call successors, (16), 1 states have call predecessors, (16), 10 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-08 15:18:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2024-11-08 15:18:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 15:18:19,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:19,282 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-08 15:18:19,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 15:18:19,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 15:18:19,486 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:19,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1879691296, now seen corresponding path program 4 times [2024-11-08 15:18:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:19,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55862820] [2024-11-08 15:18:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:19,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 15:18:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 15:18:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55862820] [2024-11-08 15:18:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55862820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209591751] [2024-11-08 15:18:19,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 15:18:19,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:19,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:19,833 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) [2024-11-08 15:18:19,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 15:18:19,923 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 15:18:19,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:19,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 15:18:19,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:20,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 15:18:21,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209591751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:21,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 36 [2024-11-08 15:18:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661496529] [2024-11-08 15:18:21,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:21,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 15:18:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 15:18:21,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 15:18:21,420 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-08 15:18:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:22,172 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-11-08 15:18:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 15:18:22,173 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) Word has length 52 [2024-11-08 15:18:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:22,174 INFO L225 Difference]: With dead ends: 124 [2024-11-08 15:18:22,174 INFO L226 Difference]: Without dead ends: 120 [2024-11-08 15:18:22,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=316, Invalid=2134, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 15:18:22,176 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 39 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:22,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 447 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 15:18:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-08 15:18:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 59. [2024-11-08 15:18:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 43 states have internal predecessors, (47), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-08 15:18:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-08 15:18:22,188 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 52 [2024-11-08 15:18:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:22,189 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-08 15:18:22,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-08 15:18:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-08 15:18:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 15:18:22,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:22,192 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:22,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 15:18:22,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:22,392 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:22,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash 310273896, now seen corresponding path program 4 times [2024-11-08 15:18:22,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:22,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781693931] [2024-11-08 15:18:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:22,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781693931] [2024-11-08 15:18:22,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781693931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951827545] [2024-11-08 15:18:22,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 15:18:22,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:22,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:22,762 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) [2024-11-08 15:18:22,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 15:18:22,867 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 15:18:22,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:22,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 15:18:22,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:23,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:18:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:18:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951827545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:18:24,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:18:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 27 [2024-11-08 15:18:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136821144] [2024-11-08 15:18:24,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:18:24,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 15:18:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:18:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 15:18:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-08 15:18:24,098 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-08 15:18:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:18:24,446 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2024-11-08 15:18:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 15:18:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) Word has length 51 [2024-11-08 15:18:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:18:24,447 INFO L225 Difference]: With dead ends: 89 [2024-11-08 15:18:24,447 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 15:18:24,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 15:18:24,448 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:18:24,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 391 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:18:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 15:18:24,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2024-11-08 15:18:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (22), 15 states have call predecessors, (22), 10 states have call successors, (22) [2024-11-08 15:18:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2024-11-08 15:18:24,460 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 51 [2024-11-08 15:18:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:18:24,461 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2024-11-08 15:18:24,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-08 15:18:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2024-11-08 15:18:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 15:18:24,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:18:24,462 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:18:24,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 15:18:24,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-08 15:18:24,662 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:18:24,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:18:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1640752648, now seen corresponding path program 5 times [2024-11-08 15:18:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:18:24,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779771045] [2024-11-08 15:18:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:18:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:18:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:24,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:18:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:24,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:24,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:18:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:24,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:18:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:24,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:24,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:18:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:18:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:18:25,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779771045] [2024-11-08 15:18:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779771045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:18:25,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32961533] [2024-11-08 15:18:25,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 15:18:25,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:18:25,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:18:25,015 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) [2024-11-08 15:18:25,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 15:18:25,136 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 15:18:25,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:18:25,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 15:18:25,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:18:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 15:18:25,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:19:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 25 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:19:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32961533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:19:02,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:19:02,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 29 [2024-11-08 15:19:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528946623] [2024-11-08 15:19:02,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:19:02,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 15:19:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:19:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 15:19:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=721, Unknown=6, NotChecked=0, Total=812 [2024-11-08 15:19:02,945 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 29 states, 28 states have (on average 2.5) internal successors, (70), 24 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-08 15:19:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:19:03,636 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2024-11-08 15:19:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 15:19:03,636 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 24 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) Word has length 51 [2024-11-08 15:19:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:19:03,637 INFO L225 Difference]: With dead ends: 97 [2024-11-08 15:19:03,637 INFO L226 Difference]: Without dead ends: 93 [2024-11-08 15:19:03,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=145, Invalid=1039, Unknown=6, NotChecked=0, Total=1190 [2024-11-08 15:19:03,638 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 15:19:03,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 415 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 15:19:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-08 15:19:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73. [2024-11-08 15:19:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 16 states have call predecessors, (24), 10 states have call successors, (24) [2024-11-08 15:19:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2024-11-08 15:19:03,651 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 51 [2024-11-08 15:19:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:19:03,651 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2024-11-08 15:19:03,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 24 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-08 15:19:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2024-11-08 15:19:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 15:19:03,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:19:03,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:19:03,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 15:19:03,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:03,853 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:19:03,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:19:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash -813457976, now seen corresponding path program 6 times [2024-11-08 15:19:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:19:03,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674924979] [2024-11-08 15:19:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:19:03,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:19:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:03,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:19:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:04,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:04,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:04,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 15:19:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:04,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:04,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 15:19:04,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:19:04,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674924979] [2024-11-08 15:19:04,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674924979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:19:04,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410566959] [2024-11-08 15:19:04,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 15:19:04,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:04,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:19:04,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:19:04,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 15:19:04,490 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 15:19:04,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:19:04,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 15:19:04,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:19:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 15:19:04,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:19:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 15:19:06,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410566959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:19:06,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:19:06,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 34 [2024-11-08 15:19:06,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515366441] [2024-11-08 15:19:06,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:19:06,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 15:19:06,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:19:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 15:19:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 15:19:06,341 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-08 15:19:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:19:06,916 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2024-11-08 15:19:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 15:19:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) Word has length 51 [2024-11-08 15:19:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:19:06,917 INFO L225 Difference]: With dead ends: 91 [2024-11-08 15:19:06,917 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 15:19:06,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 15:19:06,918 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 15:19:06,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 302 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 15:19:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 15:19:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2024-11-08 15:19:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 17 states have call predecessors, (24), 10 states have call successors, (24) [2024-11-08 15:19:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2024-11-08 15:19:06,932 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 51 [2024-11-08 15:19:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:19:06,932 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2024-11-08 15:19:06,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-08 15:19:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2024-11-08 15:19:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 15:19:06,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:19:06,934 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 15:19:06,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 15:19:07,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:07,139 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:19:07,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:19:07,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2098848124, now seen corresponding path program 7 times [2024-11-08 15:19:07,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:19:07,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635779143] [2024-11-08 15:19:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:19:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:19:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:19:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 15:19:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 15:19:07,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:19:07,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635779143] [2024-11-08 15:19:07,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635779143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:19:07,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406139998] [2024-11-08 15:19:07,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 15:19:07,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:07,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:19:07,686 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:19:07,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 15:19:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:07,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 15:19:07,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:19:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 15:19:08,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:19:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 15:19:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406139998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:19:10,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:19:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 28 [2024-11-08 15:19:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23132358] [2024-11-08 15:19:10,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:19:10,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 15:19:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:19:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 15:19:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2024-11-08 15:19:10,637 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-08 15:19:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:19:11,177 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2024-11-08 15:19:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 15:19:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) Word has length 59 [2024-11-08 15:19:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:19:11,179 INFO L225 Difference]: With dead ends: 104 [2024-11-08 15:19:11,179 INFO L226 Difference]: Without dead ends: 100 [2024-11-08 15:19:11,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 106 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 15:19:11,180 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 15:19:11,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 386 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 15:19:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-08 15:19:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2024-11-08 15:19:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 10 states have call successors, (10), 4 states have call predecessors, (10), 14 states have return successors, (30), 20 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-08 15:19:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2024-11-08 15:19:11,199 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 59 [2024-11-08 15:19:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:19:11,199 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2024-11-08 15:19:11,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-08 15:19:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2024-11-08 15:19:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 15:19:11,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:19:11,200 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:19:11,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 15:19:11,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 15:19:11,405 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:19:11,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:19:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 460618268, now seen corresponding path program 5 times [2024-11-08 15:19:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:19:11,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99304343] [2024-11-08 15:19:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:19:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:19:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:19:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 15:19:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:11,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 15:19:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:19:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99304343] [2024-11-08 15:19:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99304343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:19:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538846388] [2024-11-08 15:19:12,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 15:19:12,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:19:12,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:19:12,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 15:19:12,187 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 15:19:12,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:19:12,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 15:19:12,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:19:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 15:19:12,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:19:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 15:19:16,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538846388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:19:16,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:19:16,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 45 [2024-11-08 15:19:16,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985932638] [2024-11-08 15:19:16,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:19:16,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 15:19:16,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:19:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 15:19:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 15:19:16,396 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 34 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-08 15:19:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:19:17,463 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2024-11-08 15:19:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 15:19:17,464 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 34 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 59 [2024-11-08 15:19:17,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:19:17,465 INFO L225 Difference]: With dead ends: 116 [2024-11-08 15:19:17,465 INFO L226 Difference]: Without dead ends: 112 [2024-11-08 15:19:17,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=287, Invalid=2469, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 15:19:17,466 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 15:19:17,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 731 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 15:19:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-08 15:19:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 84. [2024-11-08 15:19:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 21 states have call predecessors, (33), 10 states have call successors, (33) [2024-11-08 15:19:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-08 15:19:17,484 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 59 [2024-11-08 15:19:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:19:17,485 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-08 15:19:17,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 34 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-08 15:19:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-08 15:19:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 15:19:17,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:19:17,486 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 15:19:17,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 15:19:17,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:17,687 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:19:17,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:19:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash 138174172, now seen corresponding path program 8 times [2024-11-08 15:19:17,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:19:17,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416252845] [2024-11-08 15:19:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:19:17,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:19:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:17,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 15:19:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:17,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:17,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:17,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 15:19:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:18,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 15:19:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:18,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:18,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 15:19:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:19:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 15:19:18,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:19:18,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416252845] [2024-11-08 15:19:18,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416252845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:19:18,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261140975] [2024-11-08 15:19:18,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 15:19:18,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:19:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:19:18,210 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:19:18,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 15:19:18,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 15:19:18,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 15:19:18,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 15:19:18,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:19:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 15:19:18,758 INFO L311 TraceCheckSpWp]: Computing backward predicates...