./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/gcd02.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0.3.0-?-c00e63d-m [2025-02-05 15:55:26,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:55:26,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:55:26,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:55:26,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:55:26,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:55:26,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:55:26,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:55:26,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:55:26,852 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:55:26,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:55:26,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:55:26,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:55:26,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:55:26,853 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:55:26,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:55:26,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:55:26,854 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:55:26,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:55:26,855 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:55:26,855 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:55:26,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:55:26,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:55:26,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:55:26,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:55:26,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:55:26,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:55:26,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:55:26,856 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:55:26,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:55:26,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:55:26,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:55:26,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:55:26,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:55:26,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:55:26,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:55:26,857 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 [2025-02-05 15:55:27,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:55:27,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:55:27,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:55:27,116 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:55:27,116 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:55:27,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd02.c [2025-02-05 15:55:28,276 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cc60bdd6d/1b5592695b454e3383102e35afdb52fb/FLAG1d614fed6 [2025-02-05 15:55:28,489 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:55:28,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c [2025-02-05 15:55:28,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cc60bdd6d/1b5592695b454e3383102e35afdb52fb/FLAG1d614fed6 [2025-02-05 15:55:28,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cc60bdd6d/1b5592695b454e3383102e35afdb52fb [2025-02-05 15:55:28,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:55:28,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:55:28,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:55:28,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:55:28,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:55:28,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644b0937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28, skipping insertion in model container [2025-02-05 15:55:28,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,582 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:55:28,678 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2025-02-05 15:55:28,686 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2025-02-05 15:55:28,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:55:28,694 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:55:28,701 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[623,636] [2025-02-05 15:55:28,704 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2025-02-05 15:55:28,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:55:28,715 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:55:28,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28 WrapperNode [2025-02-05 15:55:28,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:55:28,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:55:28,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:55:28,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:55:28,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,736 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2025-02-05 15:55:28,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:55:28,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:55:28,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:55:28,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:55:28,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,760 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]. [2025-02-05 15:55:28,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,762 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:55:28,766 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:55:28,766 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:55:28,766 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:55:28,767 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (1/1) ... [2025-02-05 15:55:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:55:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:28,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 15:55:28,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 15:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2025-02-05 15:55:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2025-02-05 15:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2025-02-05 15:55:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2025-02-05 15:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:55:28,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:55:28,850 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:55:28,851 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:55:28,897 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L39: havoc #t~ret6; [2025-02-05 15:55:28,915 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: havoc #t~ret5; [2025-02-05 15:55:28,915 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: havoc #t~ret4; [2025-02-05 15:55:28,974 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-02-05 15:55:28,974 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:55:28,980 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:55:28,980 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:55:28,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:55:28 BoogieIcfgContainer [2025-02-05 15:55:28,981 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:55:28,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:55:28,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:55:28,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:55:28,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:55:28" (1/3) ... [2025-02-05 15:55:28,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7908c81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:55:28, skipping insertion in model container [2025-02-05 15:55:28,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:55:28" (2/3) ... [2025-02-05 15:55:28,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7908c81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:55:28, skipping insertion in model container [2025-02-05 15:55:28,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:55:28" (3/3) ... [2025-02-05 15:55:28,987 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd02.c [2025-02-05 15:55:28,998 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:55:28,999 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd02.c that has 3 procedures, 34 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-05 15:55:29,042 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:55:29,052 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;@2ba1033, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:55:29,052 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 15:55:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2025-02-05 15:55:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 15:55:29,061 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:29,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:29,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:29,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1662062202, now seen corresponding path program 1 times [2025-02-05 15:55:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:29,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486141888] [2025-02-05 15:55:29,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:29,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 15:55:29,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 15:55:29,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:29,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:55:29,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486141888] [2025-02-05 15:55:29,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486141888] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:29,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:29,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:55:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16412429] [2025-02-05 15:55:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:29,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:55:29,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:29,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:55:29,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:55:29,348 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2025-02-05 15:55:29,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:29,449 INFO L93 Difference]: Finished difference Result 78 states and 108 transitions. [2025-02-05 15:55:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:55:29,451 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 [2025-02-05 15:55:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:29,459 INFO L225 Difference]: With dead ends: 78 [2025-02-05 15:55:29,460 INFO L226 Difference]: Without dead ends: 45 [2025-02-05 15:55:29,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:55:29,466 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 28 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:29,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 154 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:29,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-05 15:55:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2025-02-05 15:55:29,490 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) [2025-02-05 15:55:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2025-02-05 15:55:29,495 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 9 [2025-02-05 15:55:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:29,496 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2025-02-05 15:55:29,497 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) [2025-02-05 15:55:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2025-02-05 15:55:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 15:55:29,498 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:29,498 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:29,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:55:29,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:29,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:29,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1629548401, now seen corresponding path program 1 times [2025-02-05 15:55:29,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:29,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111518423] [2025-02-05 15:55:29,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:29,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:29,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 15:55:29,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 15:55:29,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:29,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:55:29,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111518423] [2025-02-05 15:55:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111518423] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:29,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:29,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:55:29,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194754238] [2025-02-05 15:55:29,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:29,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:55:29,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:29,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:55:29,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:55:29,681 INFO L87 Difference]: Start difference. First operand 41 states and 50 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) [2025-02-05 15:55:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:29,836 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2025-02-05 15:55:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:55:29,837 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 [2025-02-05 15:55:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:29,838 INFO L225 Difference]: With dead ends: 65 [2025-02-05 15:55:29,838 INFO L226 Difference]: Without dead ends: 63 [2025-02-05 15:55:29,838 INFO L434 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 [2025-02-05 15:55:29,838 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:29,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 161 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-05 15:55:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2025-02-05 15:55:29,851 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) [2025-02-05 15:55:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2025-02-05 15:55:29,852 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 14 [2025-02-05 15:55:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:29,852 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2025-02-05 15:55:29,853 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) [2025-02-05 15:55:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2025-02-05 15:55:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 15:55:29,853 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:29,853 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:29,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:55:29,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:29,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1630412340, now seen corresponding path program 1 times [2025-02-05 15:55:29,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:29,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790771416] [2025-02-05 15:55:29,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:29,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:29,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 15:55:29,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 15:55:29,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:29,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:55:29,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790771416] [2025-02-05 15:55:29,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790771416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:29,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:55:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261676642] [2025-02-05 15:55:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:29,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:55:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:29,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:55:29,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:55:29,972 INFO L87 Difference]: Start difference. First operand 51 states and 63 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) [2025-02-05 15:55:30,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:30,093 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2025-02-05 15:55:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:55:30,094 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 [2025-02-05 15:55:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:30,095 INFO L225 Difference]: With dead ends: 63 [2025-02-05 15:55:30,095 INFO L226 Difference]: Without dead ends: 61 [2025-02-05 15:55:30,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:55:30,096 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:30,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 110 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:30,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-05 15:55:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2025-02-05 15:55:30,105 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) [2025-02-05 15:55:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2025-02-05 15:55:30,106 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 14 [2025-02-05 15:55:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:30,106 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2025-02-05 15:55:30,106 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) [2025-02-05 15:55:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2025-02-05 15:55:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-05 15:55:30,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:30,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:30,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:55:30,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:30,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2042947031, now seen corresponding path program 1 times [2025-02-05 15:55:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:30,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405435423] [2025-02-05 15:55:30,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:30,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 15:55:30,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 15:55:30,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:30,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:55:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405435423] [2025-02-05 15:55:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405435423] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:55:30,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81323351] [2025-02-05 15:55:30,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:30,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:55:30,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:30,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:55:30,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:55:30,170 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) [2025-02-05 15:55:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:30,189 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2025-02-05 15:55:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:55:30,189 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 [2025-02-05 15:55:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:30,190 INFO L225 Difference]: With dead ends: 55 [2025-02-05 15:55:30,190 INFO L226 Difference]: Without dead ends: 51 [2025-02-05 15:55:30,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:55:30,191 INFO L435 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 [2025-02-05 15:55:30,192 INFO L436 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] [2025-02-05 15:55:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-05 15:55:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-05 15:55:30,200 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) [2025-02-05 15:55:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2025-02-05 15:55:30,201 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2025-02-05 15:55:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:30,201 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2025-02-05 15:55:30,201 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) [2025-02-05 15:55:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2025-02-05 15:55:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-05 15:55:30,202 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:30,202 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:55:30,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:55:30,203 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:30,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash -393327195, now seen corresponding path program 1 times [2025-02-05 15:55:30,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:30,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710987927] [2025-02-05 15:55:30,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:30,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:30,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-05 15:55:30,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 15:55:30,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:30,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:55:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710987927] [2025-02-05 15:55:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710987927] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 15:55:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087394764] [2025-02-05 15:55:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:30,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 15:55:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:30,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 15:55:30,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:55:30,318 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) [2025-02-05 15:55:30,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:30,457 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2025-02-05 15:55:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:55:30,457 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 [2025-02-05 15:55:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:30,458 INFO L225 Difference]: With dead ends: 69 [2025-02-05 15:55:30,458 INFO L226 Difference]: Without dead ends: 65 [2025-02-05 15:55:30,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:55:30,459 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:30,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 143 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-05 15:55:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2025-02-05 15:55:30,468 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) [2025-02-05 15:55:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2025-02-05 15:55:30,469 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 21 [2025-02-05 15:55:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:30,469 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2025-02-05 15:55:30,469 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) [2025-02-05 15:55:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2025-02-05 15:55:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 15:55:30,470 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:30,470 INFO L218 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] [2025-02-05 15:55:30,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:55:30,470 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:30,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -484565858, now seen corresponding path program 1 times [2025-02-05 15:55:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429385060] [2025-02-05 15:55:30,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:30,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:30,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 15:55:30,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 15:55:30,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:30,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:55:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429385060] [2025-02-05 15:55:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429385060] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:30,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:55:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531535057] [2025-02-05 15:55:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:30,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:55:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:30,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:55:30,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:55:30,525 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) [2025-02-05 15:55:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:30,543 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2025-02-05 15:55:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:55:30,543 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 [2025-02-05 15:55:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:30,544 INFO L225 Difference]: With dead ends: 64 [2025-02-05 15:55:30,544 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 15:55:30,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:55:30,544 INFO L435 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 [2025-02-05 15:55:30,544 INFO L436 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] [2025-02-05 15:55:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 15:55:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-02-05 15:55:30,552 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) [2025-02-05 15:55:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2025-02-05 15:55:30,552 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2025-02-05 15:55:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:30,553 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2025-02-05 15:55:30,553 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) [2025-02-05 15:55:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2025-02-05 15:55:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 15:55:30,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:30,554 INFO L218 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] [2025-02-05 15:55:30,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:55:30,554 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:30,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1663324822, now seen corresponding path program 1 times [2025-02-05 15:55:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:30,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689762113] [2025-02-05 15:55:30,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:30,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-05 15:55:30,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 15:55:30,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:30,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:55:30,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:30,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689762113] [2025-02-05 15:55:30,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689762113] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:30,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695284744] [2025-02-05 15:55:30,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:30,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:30,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:30,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:30,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 15:55:30,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-05 15:55:30,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 15:55:30,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:30,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:30,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 15:55:30,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:55:30,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 15:55:31,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695284744] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:31,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:31,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2025-02-05 15:55:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805445280] [2025-02-05 15:55:31,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:31,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 15:55:31,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:31,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 15:55:31,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:55:31,026 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 15:55:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:31,170 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2025-02-05 15:55:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:55:31,170 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 28 [2025-02-05 15:55:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:31,171 INFO L225 Difference]: With dead ends: 63 [2025-02-05 15:55:31,171 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 15:55:31,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-02-05 15:55:31,172 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:31,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 126 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 15:55:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2025-02-05 15:55:31,181 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) [2025-02-05 15:55:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2025-02-05 15:55:31,182 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 28 [2025-02-05 15:55:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:31,182 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2025-02-05 15:55:31,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 15:55:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2025-02-05 15:55:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 15:55:31,184 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:31,184 INFO L218 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] [2025-02-05 15:55:31,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:31,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:31,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:31,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash 717215749, now seen corresponding path program 1 times [2025-02-05 15:55:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461244733] [2025-02-05 15:55:31,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:31,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:55:31,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:55:31,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:31,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 15:55:31,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:31,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461244733] [2025-02-05 15:55:31,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461244733] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:55:31,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:55:31,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 15:55:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715467220] [2025-02-05 15:55:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:55:31,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 15:55:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:31,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 15:55:31,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:55:31,531 INFO L87 Difference]: Start difference. First operand 49 states and 59 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) [2025-02-05 15:55:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:31,652 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2025-02-05 15:55:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:55:31,653 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 [2025-02-05 15:55:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:31,654 INFO L225 Difference]: With dead ends: 74 [2025-02-05 15:55:31,654 INFO L226 Difference]: Without dead ends: 70 [2025-02-05 15:55:31,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-05 15:55:31,654 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:31,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 145 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-02-05 15:55:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2025-02-05 15:55:31,667 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) [2025-02-05 15:55:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2025-02-05 15:55:31,668 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 29 [2025-02-05 15:55:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:31,668 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2025-02-05 15:55:31,668 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) [2025-02-05 15:55:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2025-02-05 15:55:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 15:55:31,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:31,669 INFO L218 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] [2025-02-05 15:55:31,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:55:31,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:31,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1840737257, now seen corresponding path program 1 times [2025-02-05 15:55:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:31,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224776843] [2025-02-05 15:55:31,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:31,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:31,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:55:31,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:55:31,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:31,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 15:55:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224776843] [2025-02-05 15:55:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224776843] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616220457] [2025-02-05 15:55:31,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:31,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:31,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:31,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:31,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 15:55:31,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 15:55:31,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 15:55:31,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:31,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:31,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 15:55:31,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 15:55:31,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 15:55:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616220457] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:32,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:32,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-02-05 15:55:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084391141] [2025-02-05 15:55:32,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:32,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 15:55:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:32,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 15:55:32,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-02-05 15:55:32,216 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 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) [2025-02-05 15:55:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:32,432 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2025-02-05 15:55:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 15:55:32,433 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 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 [2025-02-05 15:55:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:32,433 INFO L225 Difference]: With dead ends: 82 [2025-02-05 15:55:32,434 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 15:55:32,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2025-02-05 15:55:32,434 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:32,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 259 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:55:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 15:55:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 63. [2025-02-05 15:55:32,447 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) [2025-02-05 15:55:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2025-02-05 15:55:32,447 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 29 [2025-02-05 15:55:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:32,448 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2025-02-05 15:55:32,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 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) [2025-02-05 15:55:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2025-02-05 15:55:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-05 15:55:32,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:32,448 INFO L218 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] [2025-02-05 15:55:32,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:32,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:32,649 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -831235018, now seen corresponding path program 1 times [2025-02-05 15:55:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869755395] [2025-02-05 15:55:32,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:32,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-05 15:55:32,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 15:55:32,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:32,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 15:55:32,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869755395] [2025-02-05 15:55:32,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869755395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377509146] [2025-02-05 15:55:32,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:32,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:32,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:32,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 15:55:32,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-05 15:55:32,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 15:55:32,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:32,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:32,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 15:55:32,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 15:55:32,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 15:55:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377509146] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:33,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2025-02-05 15:55:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494104227] [2025-02-05 15:55:33,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:33,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 15:55:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:33,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 15:55:33,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-02-05 15:55:33,063 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-05 15:55:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:33,235 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2025-02-05 15:55:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 15:55:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2025-02-05 15:55:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:33,236 INFO L225 Difference]: With dead ends: 78 [2025-02-05 15:55:33,236 INFO L226 Difference]: Without dead ends: 69 [2025-02-05 15:55:33,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-02-05 15:55:33,237 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:33,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 177 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-05 15:55:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2025-02-05 15:55:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (18), 13 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-05 15:55:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2025-02-05 15:55:33,246 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 36 [2025-02-05 15:55:33,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:33,247 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2025-02-05 15:55:33,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-05 15:55:33,247 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2025-02-05 15:55:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-05 15:55:33,247 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:33,247 INFO L218 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] [2025-02-05 15:55:33,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:55:33,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:33,448 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:33,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1760387026, now seen corresponding path program 1 times [2025-02-05 15:55:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747584155] [2025-02-05 15:55:33,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:33,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-05 15:55:33,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 15:55:33,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:33,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 15:55:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747584155] [2025-02-05 15:55:33,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747584155] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932058836] [2025-02-05 15:55:33,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:33,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:33,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:33,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:33,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:55:33,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-05 15:55:33,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 15:55:33,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:33,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:33,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 15:55:33,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:55:33,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 15:55:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932058836] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:34,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 20 [2025-02-05 15:55:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839555054] [2025-02-05 15:55:34,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:34,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-05 15:55:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:34,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-05 15:55:34,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-02-05 15:55:34,396 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-05 15:55:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:34,598 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2025-02-05 15:55:34,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 15:55:34,598 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 7 states have call successors, (8) Word has length 36 [2025-02-05 15:55:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:34,599 INFO L225 Difference]: With dead ends: 88 [2025-02-05 15:55:34,599 INFO L226 Difference]: Without dead ends: 84 [2025-02-05 15:55:34,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2025-02-05 15:55:34,600 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:34,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 198 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:55:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-05 15:55:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2025-02-05 15:55:34,612 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) [2025-02-05 15:55:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2025-02-05 15:55:34,614 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 36 [2025-02-05 15:55:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:34,614 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2025-02-05 15:55:34,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-05 15:55:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2025-02-05 15:55:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 15:55:34,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:34,614 INFO L218 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] [2025-02-05 15:55:34,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:34,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-05 15:55:34,818 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:34,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1693115327, now seen corresponding path program 1 times [2025-02-05 15:55:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775744234] [2025-02-05 15:55:34,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:34,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:34,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-05 15:55:34,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 15:55:34,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:34,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 15:55:34,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775744234] [2025-02-05 15:55:34,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775744234] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367150060] [2025-02-05 15:55:34,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:34,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:34,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:34,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 15:55:34,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-05 15:55:34,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 15:55:34,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:34,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:34,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 15:55:34,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 15:55:35,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 15:55:35,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367150060] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:35,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:35,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 19 [2025-02-05 15:55:35,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855994142] [2025-02-05 15:55:35,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:35,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 15:55:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:35,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 15:55:35,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2025-02-05 15:55:35,498 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 19 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 14 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-05 15:55:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:35,730 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2025-02-05 15:55:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 15:55:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 14 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 37 [2025-02-05 15:55:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:35,732 INFO L225 Difference]: With dead ends: 81 [2025-02-05 15:55:35,732 INFO L226 Difference]: Without dead ends: 77 [2025-02-05 15:55:35,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2025-02-05 15:55:35,733 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:35,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 176 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:55:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-05 15:55:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2025-02-05 15:55:35,759 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) [2025-02-05 15:55:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2025-02-05 15:55:35,760 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 37 [2025-02-05 15:55:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:35,760 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2025-02-05 15:55:35,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 14 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-05 15:55:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2025-02-05 15:55:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 15:55:35,764 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:35,764 INFO L218 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] [2025-02-05 15:55:35,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 15:55:35,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 15:55:35,968 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:35,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1831935098, now seen corresponding path program 1 times [2025-02-05 15:55:35,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:35,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986694598] [2025-02-05 15:55:35,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:35,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:35,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-05 15:55:35,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 15:55:35,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:35,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 15:55:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986694598] [2025-02-05 15:55:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986694598] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655153040] [2025-02-05 15:55:36,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:55:36,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:36,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:36,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:36,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 15:55:36,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-05 15:55:36,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 15:55:36,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:55:36,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:36,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 15:55:36,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 15:55:36,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 15:55:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655153040] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:37,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:37,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 21 [2025-02-05 15:55:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402661460] [2025-02-05 15:55:37,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:37,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 15:55:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:37,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 15:55:37,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2025-02-05 15:55:37,014 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-05 15:55:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:37,254 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2025-02-05 15:55:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 15:55:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 44 [2025-02-05 15:55:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:37,255 INFO L225 Difference]: With dead ends: 87 [2025-02-05 15:55:37,255 INFO L226 Difference]: Without dead ends: 83 [2025-02-05 15:55:37,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-02-05 15:55:37,256 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:37,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 225 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:55:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-05 15:55:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2025-02-05 15:55:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 10 states have call successors, (10), 4 states have call predecessors, (10), 10 states have return successors, (22), 16 states have call predecessors, (22), 10 states have call successors, (22) [2025-02-05 15:55:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2025-02-05 15:55:37,266 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 44 [2025-02-05 15:55:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:37,266 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2025-02-05 15:55:37,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-05 15:55:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2025-02-05 15:55:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-05 15:55:37,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:37,267 INFO L218 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] [2025-02-05 15:55:37,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 15:55:37,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 15:55:37,471 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:37,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2124440931, now seen corresponding path program 2 times [2025-02-05 15:55:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:37,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598714616] [2025-02-05 15:55:37,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:37,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:37,476 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-05 15:55:37,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-05 15:55:37,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:37,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 15:55:37,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:37,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598714616] [2025-02-05 15:55:37,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598714616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:37,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378081842] [2025-02-05 15:55:37,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:37,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:37,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:37,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:55:37,944 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-05 15:55:37,964 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-05 15:55:37,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:37,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:37,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 15:55:37,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:55:38,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 15:55:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378081842] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:43,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 18] total 28 [2025-02-05 15:55:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131392171] [2025-02-05 15:55:43,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:43,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 15:55:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:43,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 15:55:43,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2025-02-05 15:55:43,425 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 24 states have internal predecessors, (68), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2025-02-05 15:55:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:43,815 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2025-02-05 15:55:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 15:55:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 24 states have internal predecessors, (68), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) Word has length 51 [2025-02-05 15:55:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:43,820 INFO L225 Difference]: With dead ends: 99 [2025-02-05 15:55:43,820 INFO L226 Difference]: Without dead ends: 95 [2025-02-05 15:55:43,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 15:55:43,821 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:43,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 482 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:55:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-02-05 15:55:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2025-02-05 15:55:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (33), 20 states have call predecessors, (33), 11 states have call successors, (33) [2025-02-05 15:55:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2025-02-05 15:55:43,835 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 51 [2025-02-05 15:55:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:43,836 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2025-02-05 15:55:43,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 24 states have internal predecessors, (68), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2025-02-05 15:55:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2025-02-05 15:55:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-05 15:55:43,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:43,837 INFO L218 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] [2025-02-05 15:55:43,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:44,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:44,041 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:44,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash 482868675, now seen corresponding path program 2 times [2025-02-05 15:55:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:44,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599251555] [2025-02-05 15:55:44,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:44,044 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 15:55:44,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 15:55:44,053 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:44,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 15:55:44,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599251555] [2025-02-05 15:55:44,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599251555] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244725857] [2025-02-05 15:55:44,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:55:44,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:44,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:44,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:44,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:55:44,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 15:55:44,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 15:55:44,321 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:55:44,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:44,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-05 15:55:44,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 15:55:44,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:55:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:55:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244725857] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:55:44,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 15:55:44,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 21 [2025-02-05 15:55:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424656257] [2025-02-05 15:55:44,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 15:55:44,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 15:55:44,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:55:44,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 15:55:44,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2025-02-05 15:55:44,715 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-05 15:55:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:55:44,919 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2025-02-05 15:55:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 15:55:44,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 43 [2025-02-05 15:55:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:55:44,920 INFO L225 Difference]: With dead ends: 95 [2025-02-05 15:55:44,920 INFO L226 Difference]: Without dead ends: 86 [2025-02-05 15:55:44,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2025-02-05 15:55:44,921 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:55:44,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 193 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:55:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-05 15:55:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2025-02-05 15:55:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (32), 19 states have call predecessors, (32), 11 states have call successors, (32) [2025-02-05 15:55:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2025-02-05 15:55:44,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 43 [2025-02-05 15:55:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:55:44,931 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2025-02-05 15:55:44,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-05 15:55:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2025-02-05 15:55:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 15:55:44,932 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:55:44,932 INFO L218 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] [2025-02-05 15:55:44,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:55:45,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-05 15:55:45,133 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:55:45,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:55:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1353667350, now seen corresponding path program 3 times [2025-02-05 15:55:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:55:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062952149] [2025-02-05 15:55:45,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:55:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:55:45,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 3 equivalence classes. [2025-02-05 15:55:45,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 15:55:45,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 15:55:45,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:55:45,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:55:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062952149] [2025-02-05 15:55:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062952149] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:55:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704630317] [2025-02-05 15:55:45,382 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:55:45,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:55:45,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:55:45,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:55:45,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:55:45,434 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 3 equivalence classes. [2025-02-05 15:55:45,452 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 15:55:45,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 15:55:45,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:55:45,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-05 15:55:45,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:55:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 15:55:45,780 INFO L312 TraceCheckSpWp]: Computing backward predicates...