./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 48c9605d 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-?-48c9605-m [2025-02-07 21:01:58,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:01:58,740 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:01:58,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:01:58,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:01:58,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:01:58,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:01:58,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:01:58,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:01:58,768 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:01:58,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:01:58,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:01:58,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:01:58,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:01:58,770 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:01:58,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:01:58,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:01:58,770 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:01:58,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:01:58,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:01:58,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:01:58,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:01:58,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:01:58,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:01:58,772 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:01:58,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:01:58,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:01:58,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:01:58,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:01:58,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:01:58,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:01:58,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:01:58,773 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 [2025-02-07 21:01:58,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:01:58,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:01:58,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:01:58,951 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:01:58,951 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:01:58,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd02.c [2025-02-07 21:02:00,074 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4d2cf609/4d99375927494b90a5f49635480a0bd3/FLAG3a91696dc [2025-02-07 21:02:00,268 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:02:00,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/gcd02.c [2025-02-07 21:02:00,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4d2cf609/4d99375927494b90a5f49635480a0bd3/FLAG3a91696dc [2025-02-07 21:02:00,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4d2cf609/4d99375927494b90a5f49635480a0bd3 [2025-02-07 21:02:00,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:02:00,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:02:00,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:02:00,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:02:00,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:02:00,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5525bac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00, skipping insertion in model container [2025-02-07 21:02:00,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:02:00,749 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] [2025-02-07 21:02:00,760 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] [2025-02-07 21:02:00,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:02:00,768 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:02:00,776 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] [2025-02-07 21:02:00,780 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] [2025-02-07 21:02:00,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:02:00,789 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:02:00,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00 WrapperNode [2025-02-07 21:02:00,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:02:00,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:02:00,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:02:00,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:02:00,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,809 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2025-02-07 21:02:00,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:02:00,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:02:00,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:02:00,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:02:00,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,825 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]. [2025-02-07 21:02:00,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,831 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:02:00,838 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:02:00,838 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:02:00,838 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:02:00,839 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (1/1) ... [2025-02-07 21:02:00,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:02:00,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:00,866 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) [2025-02-07 21:02:00,868 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 [2025-02-07 21:02:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:02:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2025-02-07 21:02:00,887 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2025-02-07 21:02:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:02:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 21:02:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2025-02-07 21:02:00,887 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2025-02-07 21:02:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:02:00,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:02:00,933 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:02:00,935 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:02:00,990 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L39: havoc #t~ret6; [2025-02-07 21:02:01,005 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: havoc #t~ret5; [2025-02-07 21:02:01,005 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: havoc #t~ret4; [2025-02-07 21:02:01,038 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-02-07 21:02:01,038 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:02:01,044 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:02:01,044 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:02:01,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:02:01 BoogieIcfgContainer [2025-02-07 21:02:01,044 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:02:01,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:02:01,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:02:01,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:02:01,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:02:00" (1/3) ... [2025-02-07 21:02:01,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704f8337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:02:01, skipping insertion in model container [2025-02-07 21:02:01,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:02:00" (2/3) ... [2025-02-07 21:02:01,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704f8337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:02:01, skipping insertion in model container [2025-02-07 21:02:01,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:02:01" (3/3) ... [2025-02-07 21:02:01,050 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd02.c [2025-02-07 21:02:01,058 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:02:01,059 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. [2025-02-07 21:02:01,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:02:01,092 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;@e699be5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:02:01,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-07 21:02:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 26 states have internal predecessors, (34), 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) [2025-02-07 21:02:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-07 21:02:01,097 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:01,098 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:01,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:01,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1880402649, now seen corresponding path program 1 times [2025-02-07 21:02:01,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:01,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907155334] [2025-02-07 21:02:01,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:01,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:01,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-07 21:02:01,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-07 21:02:01,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:01,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:02:01,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:01,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907155334] [2025-02-07 21:02:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907155334] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:01,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:01,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 21:02:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210406575] [2025-02-07 21:02:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:01,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 21:02:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:01,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 21:02:01,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:02:01,289 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 26 states have internal predecessors, (34), 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 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2025-02-07 21:02:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:01,391 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2025-02-07 21:02:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 21:02:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2025-02-07 21:02:01,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:01,397 INFO L225 Difference]: With dead ends: 76 [2025-02-07 21:02:01,398 INFO L226 Difference]: Without dead ends: 44 [2025-02-07 21:02:01,402 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 [2025-02-07 21:02:01,404 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:01,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 135 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-07 21:02:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2025-02-07 21:02:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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) [2025-02-07 21:02:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2025-02-07 21:02:01,436 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2025-02-07 21:02:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:01,437 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2025-02-07 21:02:01,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2025-02-07 21:02:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2025-02-07 21:02:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 21:02:01,438 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:01,438 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:01,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:02:01,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:01,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash 956743357, now seen corresponding path program 1 times [2025-02-07 21:02:01,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:01,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120610466] [2025-02-07 21:02:01,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:01,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 21:02:01,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 21:02:01,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:01,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:02:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120610466] [2025-02-07 21:02:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120610466] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-07 21:02:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978652258] [2025-02-07 21:02:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:01,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 21:02:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:01,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 21:02:01,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:02:01,610 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2025-02-07 21:02:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:01,702 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2025-02-07 21:02:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:02:01,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 13 [2025-02-07 21:02:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:01,704 INFO L225 Difference]: With dead ends: 64 [2025-02-07 21:02:01,704 INFO L226 Difference]: Without dead ends: 62 [2025-02-07 21:02:01,704 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 [2025-02-07 21:02:01,705 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:01,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 102 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:02:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-07 21:02:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2025-02-07 21:02:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 36 states have internal predecessors, (44), 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) [2025-02-07 21:02:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2025-02-07 21:02:01,713 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 13 [2025-02-07 21:02:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:01,713 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2025-02-07 21:02:01,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2025-02-07 21:02:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2025-02-07 21:02:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 21:02:01,714 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:01,714 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:01,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 21:02:01,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:01,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash 955879418, now seen corresponding path program 1 times [2025-02-07 21:02:01,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:01,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314173461] [2025-02-07 21:02:01,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:01,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 21:02:01,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 21:02:01,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:01,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:02:01,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:01,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314173461] [2025-02-07 21:02:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314173461] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 21:02:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125937014] [2025-02-07 21:02:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:01,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 21:02:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:01,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 21:02:01,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:02:01,782 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2025-02-07 21:02:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:01,848 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2025-02-07 21:02:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 21:02:01,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2025-02-07 21:02:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:01,850 INFO L225 Difference]: With dead ends: 62 [2025-02-07 21:02:01,850 INFO L226 Difference]: Without dead ends: 60 [2025-02-07 21:02:01,850 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 [2025-02-07 21:02:01,851 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 18 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:01,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 132 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:02:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-07 21:02:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2025-02-07 21:02:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2025-02-07 21:02:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2025-02-07 21:02:01,859 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2025-02-07 21:02:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:01,859 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2025-02-07 21:02:01,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2025-02-07 21:02:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2025-02-07 21:02:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-07 21:02:01,860 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:01,860 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:01,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 21:02:01,860 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:01,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash 812587079, now seen corresponding path program 1 times [2025-02-07 21:02:01,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:01,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601959834] [2025-02-07 21:02:01,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:01,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:01,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-07 21:02:01,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-07 21:02:01,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:01,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:02:01,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601959834] [2025-02-07 21:02:01,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601959834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:01,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:01,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 21:02:01,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009494556] [2025-02-07 21:02:01,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:01,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 21:02:01,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:01,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 21:02:01,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 21:02:01,901 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2025-02-07 21:02:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:01,913 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2025-02-07 21:02:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 21:02:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19 [2025-02-07 21:02:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:01,914 INFO L225 Difference]: With dead ends: 54 [2025-02-07 21:02:01,914 INFO L226 Difference]: Without dead ends: 50 [2025-02-07 21:02:01,914 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 [2025-02-07 21:02:01,915 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 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 [2025-02-07 21:02:01,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:02:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-07 21:02:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-07 21:02:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 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) [2025-02-07 21:02:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2025-02-07 21:02:01,922 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 19 [2025-02-07 21:02:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:01,922 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2025-02-07 21:02:01,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2025-02-07 21:02:01,922 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2025-02-07 21:02:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-07 21:02:01,923 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:01,923 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] [2025-02-07 21:02:01,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-07 21:02:01,923 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:01,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash 121113687, now seen corresponding path program 1 times [2025-02-07 21:02:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:01,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924049157] [2025-02-07 21:02:01,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:01,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:01,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-07 21:02:01,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-07 21:02:01,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:01,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:02:02,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:02,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924049157] [2025-02-07 21:02:02,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924049157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:02,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:02,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-07 21:02:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591537336] [2025-02-07 21:02:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:02,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 21:02:02,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:02,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 21:02:02,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-07 21:02:02,014 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2025-02-07 21:02:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:02,113 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2025-02-07 21:02:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 21:02:02,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 20 [2025-02-07 21:02:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:02,114 INFO L225 Difference]: With dead ends: 68 [2025-02-07 21:02:02,114 INFO L226 Difference]: Without dead ends: 64 [2025-02-07 21:02:02,115 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 [2025-02-07 21:02:02,115 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:02,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-07 21:02:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2025-02-07 21:02:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 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) [2025-02-07 21:02:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2025-02-07 21:02:02,128 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 20 [2025-02-07 21:02:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:02,128 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2025-02-07 21:02:02,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2025-02-07 21:02:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2025-02-07 21:02:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-07 21:02:02,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:02,129 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] [2025-02-07 21:02:02,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 21:02:02,130 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:02,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:02,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1905564814, now seen corresponding path program 1 times [2025-02-07 21:02:02,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:02,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373898131] [2025-02-07 21:02:02,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:02,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 21:02:02,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 21:02:02,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:02,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:02:02,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373898131] [2025-02-07 21:02:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373898131] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:02,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:02,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:02:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336346627] [2025-02-07 21:02:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:02,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:02:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:02,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:02:02,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:02:02,172 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2025-02-07 21:02:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:02,185 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2025-02-07 21:02:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 21:02:02,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 26 [2025-02-07 21:02:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:02,190 INFO L225 Difference]: With dead ends: 63 [2025-02-07 21:02:02,190 INFO L226 Difference]: Without dead ends: 54 [2025-02-07 21:02:02,191 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 [2025-02-07 21:02:02,191 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 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 [2025-02-07 21:02:02,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:02:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-07 21:02:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-02-07 21:02:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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) [2025-02-07 21:02:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2025-02-07 21:02:02,201 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 26 [2025-02-07 21:02:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:02,201 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2025-02-07 21:02:02,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2025-02-07 21:02:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2025-02-07 21:02:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 21:02:02,202 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:02,202 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] [2025-02-07 21:02:02,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-07 21:02:02,202 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:02,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash -695835290, now seen corresponding path program 1 times [2025-02-07 21:02:02,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:02,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491924873] [2025-02-07 21:02:02,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:02,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:02,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 21:02:02,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 21:02:02,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:02,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:02:02,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491924873] [2025-02-07 21:02:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491924873] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305195795] [2025-02-07 21:02:02,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:02,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:02,350 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) [2025-02-07 21:02:02,355 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 [2025-02-07 21:02:02,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 21:02:02,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 21:02:02,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:02,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:02,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-07 21:02:02,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:02:02,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:02:02,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305195795] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:02,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:02,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2025-02-07 21:02:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544218104] [2025-02-07 21:02:02,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:02,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 21:02:02,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:02,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 21:02:02,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-02-07 21:02:02,567 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2025-02-07 21:02:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:02,719 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2025-02-07 21:02:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 21:02:02,720 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 27 [2025-02-07 21:02:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:02,720 INFO L225 Difference]: With dead ends: 62 [2025-02-07 21:02:02,720 INFO L226 Difference]: Without dead ends: 54 [2025-02-07 21:02:02,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-02-07 21:02:02,721 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:02,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 144 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-07 21:02:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2025-02-07 21:02:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 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) [2025-02-07 21:02:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2025-02-07 21:02:02,727 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2025-02-07 21:02:02,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:02,727 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2025-02-07 21:02:02,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2025-02-07 21:02:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2025-02-07 21:02:02,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 21:02:02,728 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:02,728 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] [2025-02-07 21:02:02,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 21:02:02,932 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 [2025-02-07 21:02:02,932 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:02,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1078663081, now seen corresponding path program 1 times [2025-02-07 21:02:02,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:02,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676083966] [2025-02-07 21:02:02,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:02,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 21:02:02,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 21:02:02,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:02,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 21:02:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676083966] [2025-02-07 21:02:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676083966] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:02:03,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:02:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-07 21:02:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041693746] [2025-02-07 21:02:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:02:03,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 21:02:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:03,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 21:02:03,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-07 21:02:03,052 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) [2025-02-07 21:02:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:03,177 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2025-02-07 21:02:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 21:02:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 28 [2025-02-07 21:02:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:03,181 INFO L225 Difference]: With dead ends: 73 [2025-02-07 21:02:03,181 INFO L226 Difference]: Without dead ends: 69 [2025-02-07 21:02:03,181 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 [2025-02-07 21:02:03,182 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:03,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 137 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-07 21:02:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2025-02-07 21:02:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 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) [2025-02-07 21:02:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2025-02-07 21:02:03,197 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 28 [2025-02-07 21:02:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:03,197 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2025-02-07 21:02:03,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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) [2025-02-07 21:02:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2025-02-07 21:02:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 21:02:03,200 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:03,201 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] [2025-02-07 21:02:03,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-07 21:02:03,201 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:03,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash 44858427, now seen corresponding path program 1 times [2025-02-07 21:02:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:03,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593373796] [2025-02-07 21:02:03,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:03,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 21:02:03,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 21:02:03,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:03,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:02:03,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593373796] [2025-02-07 21:02:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593373796] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558290843] [2025-02-07 21:02:03,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:03,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:03,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:03,402 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) [2025-02-07 21:02:03,404 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 [2025-02-07 21:02:03,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 21:02:03,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 21:02:03,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:03,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:03,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-07 21:02:03,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:02:03,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 21:02:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558290843] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:03,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-02-07 21:02:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538304456] [2025-02-07 21:02:03,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:03,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-07 21:02:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:03,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-07 21:02:03,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-02-07 21:02:03,770 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 19 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 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) [2025-02-07 21:02:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:03,952 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2025-02-07 21:02:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 21:02:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 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 28 [2025-02-07 21:02:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:03,954 INFO L225 Difference]: With dead ends: 81 [2025-02-07 21:02:03,954 INFO L226 Difference]: Without dead ends: 77 [2025-02-07 21:02:03,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:02:03,955 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:03,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 198 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:02:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-07 21:02:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2025-02-07 21:02:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 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) [2025-02-07 21:02:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2025-02-07 21:02:03,963 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 28 [2025-02-07 21:02:03,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:03,963 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2025-02-07 21:02:03,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 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) [2025-02-07 21:02:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2025-02-07 21:02:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-07 21:02:03,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:03,964 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] [2025-02-07 21:02:03,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 21:02:04,169 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 [2025-02-07 21:02:04,169 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:04,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1561987430, now seen corresponding path program 1 times [2025-02-07 21:02:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:04,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038362178] [2025-02-07 21:02:04,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:04,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 21:02:04,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 21:02:04,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:04,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:04,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038362178] [2025-02-07 21:02:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038362178] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368350638] [2025-02-07 21:02:04,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:04,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:04,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:04,336 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) [2025-02-07 21:02:04,337 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 [2025-02-07 21:02:04,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 21:02:04,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 21:02:04,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:04,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:04,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 21:02:04,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:04,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:04,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368350638] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:04,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:04,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2025-02-07 21:02:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851979036] [2025-02-07 21:02:04,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:04,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 21:02:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:04,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 21:02:04,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-02-07 21:02:04,558 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 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) [2025-02-07 21:02:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:04,682 INFO L93 Difference]: Finished difference Result 77 states and 99 transitions. [2025-02-07 21:02:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 21:02:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 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 35 [2025-02-07 21:02:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:04,684 INFO L225 Difference]: With dead ends: 77 [2025-02-07 21:02:04,684 INFO L226 Difference]: Without dead ends: 68 [2025-02-07 21:02:04,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:02:04,685 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:04,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 127 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-07 21:02:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2025-02-07 21:02:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 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) [2025-02-07 21:02:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2025-02-07 21:02:04,691 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 35 [2025-02-07 21:02:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:04,692 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2025-02-07 21:02:04,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 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) [2025-02-07 21:02:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2025-02-07 21:02:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-07 21:02:04,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:04,693 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] [2025-02-07 21:02:04,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 21:02:04,897 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 [2025-02-07 21:02:04,897 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:04,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash -141357822, now seen corresponding path program 1 times [2025-02-07 21:02:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:04,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581389008] [2025-02-07 21:02:04,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:04,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 21:02:04,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 21:02:04,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:04,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:02:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:05,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581389008] [2025-02-07 21:02:05,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581389008] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:05,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628134432] [2025-02-07 21:02:05,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:05,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:05,046 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) [2025-02-07 21:02:05,053 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 [2025-02-07 21:02:05,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 21:02:05,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 21:02:05,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:05,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:05,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-07 21:02:05,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:02:05,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:02:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628134432] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:05,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 20 [2025-02-07 21:02:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597327557] [2025-02-07 21:02:05,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:05,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 21:02:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:05,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 21:02:05,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-02-07 21:02:05,612 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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) [2025-02-07 21:02:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:05,808 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2025-02-07 21:02:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 21:02:05,808 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 35 [2025-02-07 21:02:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:05,809 INFO L225 Difference]: With dead ends: 87 [2025-02-07 21:02:05,809 INFO L226 Difference]: Without dead ends: 83 [2025-02-07 21:02:05,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2025-02-07 21:02:05,810 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:05,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 210 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:02:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-07 21:02:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2025-02-07 21:02:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 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) [2025-02-07 21:02:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2025-02-07 21:02:05,818 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 35 [2025-02-07 21:02:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:05,818 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2025-02-07 21:02:05,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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) [2025-02-07 21:02:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2025-02-07 21:02:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-07 21:02:05,819 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:05,819 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] [2025-02-07 21:02:05,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 21:02:06,023 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 [2025-02-07 21:02:06,023 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:06,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash -96837133, now seen corresponding path program 1 times [2025-02-07 21:02:06,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:06,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464071239] [2025-02-07 21:02:06,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:06,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-07 21:02:06,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 21:02:06,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:06,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:02:06,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464071239] [2025-02-07 21:02:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464071239] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547577016] [2025-02-07 21:02:06,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:06,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:06,148 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) [2025-02-07 21:02:06,151 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 [2025-02-07 21:02:06,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-07 21:02:06,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 21:02:06,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:06,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:06,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-07 21:02:06,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:02:06,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:06,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547577016] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:06,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:06,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 19 [2025-02-07 21:02:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418142936] [2025-02-07 21:02:06,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:06,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-07 21:02:06,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:06,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-07 21:02:06,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2025-02-07 21:02:06,680 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 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) [2025-02-07 21:02:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:06,846 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2025-02-07 21:02:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 21:02:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 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 36 [2025-02-07 21:02:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:06,847 INFO L225 Difference]: With dead ends: 80 [2025-02-07 21:02:06,847 INFO L226 Difference]: Without dead ends: 76 [2025-02-07 21:02:06,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2025-02-07 21:02:06,848 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:06,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 175 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-07 21:02:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2025-02-07 21:02:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 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) [2025-02-07 21:02:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-02-07 21:02:06,855 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 36 [2025-02-07 21:02:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:06,855 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-02-07 21:02:06,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 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) [2025-02-07 21:02:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-02-07 21:02:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 21:02:06,856 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:06,856 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] [2025-02-07 21:02:06,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-07 21:02:07,056 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 [2025-02-07 21:02:07,057 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:07,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -295581622, now seen corresponding path program 1 times [2025-02-07 21:02:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:07,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498209885] [2025-02-07 21:02:07,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:07,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:07,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-07 21:02:07,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 21:02:07,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:07,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:02:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498209885] [2025-02-07 21:02:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498209885] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951220835] [2025-02-07 21:02:07,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:02:07,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:07,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:07,204 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) [2025-02-07 21:02:07,208 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 [2025-02-07 21:02:07,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-07 21:02:07,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 21:02:07,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:07,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:07,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-07 21:02:07,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 21:02:07,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:02:08,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951220835] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:08,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 21 [2025-02-07 21:02:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100559313] [2025-02-07 21:02:08,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:08,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 21:02:08,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:08,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 21:02:08,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:02:08,006 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 21 states, 20 states have (on average 2.55) internal successors, (51), 18 states have internal predecessors, (51), 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) [2025-02-07 21:02:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:08,217 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2025-02-07 21:02:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 21:02:08,217 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 18 states have internal predecessors, (51), 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 43 [2025-02-07 21:02:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:08,218 INFO L225 Difference]: With dead ends: 86 [2025-02-07 21:02:08,218 INFO L226 Difference]: Without dead ends: 82 [2025-02-07 21:02:08,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-02-07 21:02:08,219 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:08,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 199 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:02:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-07 21:02:08,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2025-02-07 21:02:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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) [2025-02-07 21:02:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2025-02-07 21:02:08,230 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 43 [2025-02-07 21:02:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:08,230 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2025-02-07 21:02:08,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 18 states have internal predecessors, (51), 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) [2025-02-07 21:02:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2025-02-07 21:02:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 21:02:08,232 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:08,232 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] [2025-02-07 21:02:08,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-07 21:02:08,432 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 [2025-02-07 21:02:08,433 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:08,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash 185909491, now seen corresponding path program 2 times [2025-02-07 21:02:08,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91154772] [2025-02-07 21:02:08,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:02:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:08,438 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-07 21:02:08,444 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 21:02:08,444 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:02:08,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:02:08,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:08,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91154772] [2025-02-07 21:02:08,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91154772] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:08,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217831896] [2025-02-07 21:02:08,697 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:02:08,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:08,701 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) [2025-02-07 21:02:08,702 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 [2025-02-07 21:02:08,734 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-07 21:02:08,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 21:02:08,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:02:08,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:08,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 21:02:08,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 21:02:08,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:13,760 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_gcd_~y1_BEFORE_CALL_17 Int)) (or (forall ((v_y_7 Int)) (let ((.cse1 (* v_gcd_~y1_BEFORE_CALL_17 3))) (let ((.cse0 (div (+ (- 1) .cse1) 6))) (or (< (* 3 v_y_7) .cse0) (< (+ (* 3 |c_gcd_#res|) 4) (+ (* 6 v_y_7) (mod (+ 5 .cse1) 6))) (< (+ v_y_7 |c_gcd_#res|) (+ .cse0 1)))))) (< v_gcd_~y1_BEFORE_CALL_17 .cse2))) (forall ((v_gcd_~y1_BEFORE_CALL_17 Int)) (or (< (+ |c_gcd_#res| (div (+ |c_gcd_#res| 1) 2)) (+ 2 (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_17 3)) 6))) (< v_gcd_~y1_BEFORE_CALL_17 .cse2))))) is different from false [2025-02-07 21:02:17,924 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_gcd_~y1_BEFORE_CALL_17 Int) (v_y_7 Int)) (let ((.cse1 (* v_gcd_~y1_BEFORE_CALL_17 3))) (let ((.cse0 (div (+ (- 1) .cse1) 6))) (or (< (+ |c_gcd_#t~ret5| v_y_7) (+ .cse0 1)) (< (* 3 v_y_7) .cse0) (< (+ (* |c_gcd_#t~ret5| 3) 4) (+ (* 6 v_y_7) (mod (+ 5 .cse1) 6))) (< v_gcd_~y1_BEFORE_CALL_17 .cse2))))) (forall ((v_gcd_~y1_BEFORE_CALL_17 Int)) (or (< (* 3 (div (+ (- 1) |c_gcd_#t~ret5|) 2)) (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_17 3)) 6)) (< v_gcd_~y1_BEFORE_CALL_17 .cse2))) (forall ((v_gcd_~y1_BEFORE_CALL_17 Int)) (or (< v_gcd_~y1_BEFORE_CALL_17 .cse2) (< (* (div |c_gcd_#t~ret5| 2) 3) (+ 2 (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_17 3)) 6))))))) is different from false [2025-02-07 21:02:47,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217831896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:47,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 21:02:47,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 22 [2025-02-07 21:02:47,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436985222] [2025-02-07 21:02:47,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:47,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-07 21:02:47,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:47,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-07 21:02:47,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=8, NotChecked=102, Total=812 [2025-02-07 21:02:47,135 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 7 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-07 21:02:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:47,992 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2025-02-07 21:02:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 21:02:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 7 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 50 [2025-02-07 21:02:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:47,997 INFO L225 Difference]: With dead ends: 98 [2025-02-07 21:02:47,997 INFO L226 Difference]: Without dead ends: 94 [2025-02-07 21:02:47,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=140, Invalid=916, Unknown=8, NotChecked=126, Total=1190 [2025-02-07 21:02:47,998 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:47,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 350 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 21:02:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-02-07 21:02:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2025-02-07 21:02:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 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) [2025-02-07 21:02:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2025-02-07 21:02:48,009 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 50 [2025-02-07 21:02:48,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:48,009 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2025-02-07 21:02:48,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 7 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-07 21:02:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2025-02-07 21:02:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 21:02:48,010 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:48,010 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:48,021 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 [2025-02-07 21:02:48,210 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 [2025-02-07 21:02:48,210 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:48,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash 197325199, now seen corresponding path program 2 times [2025-02-07 21:02:48,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:48,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725270511] [2025-02-07 21:02:48,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:02:48,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:48,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-07 21:02:48,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 21:02:48,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:02:48,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:02:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725270511] [2025-02-07 21:02:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725270511] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418864499] [2025-02-07 21:02:48,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:02:48,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:48,947 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) [2025-02-07 21:02:48,948 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 [2025-02-07 21:02:48,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-07 21:02:49,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 21:02:49,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:02:49,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:49,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 21:02:49,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 21:02:49,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:51,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418864499] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:51,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:51,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 18] total 28 [2025-02-07 21:02:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228823415] [2025-02-07 21:02:51,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:51,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-07 21:02:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:51,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-07 21:02:51,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2025-02-07 21:02:51,724 INFO L87 Difference]: Start difference. First operand 81 states and 105 transitions. Second operand has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 24 states have internal predecessors, (67), 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) [2025-02-07 21:02:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:52,805 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2025-02-07 21:02:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 21:02:52,806 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 24 states have internal predecessors, (67), 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 50 [2025-02-07 21:02:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:52,806 INFO L225 Difference]: With dead ends: 107 [2025-02-07 21:02:52,806 INFO L226 Difference]: Without dead ends: 103 [2025-02-07 21:02:52,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 21:02:52,807 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:52,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 391 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-07 21:02:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-02-07 21:02:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 82. [2025-02-07 21:02:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (33), 21 states have call predecessors, (33), 11 states have call successors, (33) [2025-02-07 21:02:52,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2025-02-07 21:02:52,815 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 50 [2025-02-07 21:02:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:52,815 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2025-02-07 21:02:52,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 24 states have internal predecessors, (67), 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) [2025-02-07 21:02:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2025-02-07 21:02:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-07 21:02:52,816 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:52,816 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] [2025-02-07 21:02:52,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 21:02:53,020 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 [2025-02-07 21:02:53,020 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:53,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:53,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1405422579, now seen corresponding path program 3 times [2025-02-07 21:02:53,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:53,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973564124] [2025-02-07 21:02:53,021 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:02:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:53,028 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-02-07 21:02:53,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 21:02:53,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 21:02:53,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973564124] [2025-02-07 21:02:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973564124] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597574246] [2025-02-07 21:02:53,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:02:53,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:53,495 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) [2025-02-07 21:02:53,498 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 [2025-02-07 21:02:53,546 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-02-07 21:02:53,558 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 21:02:53,558 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 21:02:53,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:53,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-07 21:02:53,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:53,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:02:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597574246] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:55,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 28 [2025-02-07 21:02:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666479355] [2025-02-07 21:02:55,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:55,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-07 21:02:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:55,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-07 21:02:55,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2025-02-07 21:02:55,027 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 28 states, 24 states have (on average 2.375) internal successors, (57), 26 states have internal predecessors, (57), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 10 states have call successors, (11) [2025-02-07 21:02:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:55,583 INFO L93 Difference]: Finished difference Result 94 states and 123 transitions. [2025-02-07 21:02:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 21:02:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.375) internal successors, (57), 26 states have internal predecessors, (57), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 10 states have call successors, (11) Word has length 42 [2025-02-07 21:02:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:55,584 INFO L225 Difference]: With dead ends: 94 [2025-02-07 21:02:55,584 INFO L226 Difference]: Without dead ends: 85 [2025-02-07 21:02:55,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 21:02:55,585 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:55,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 173 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 21:02:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-07 21:02:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2025-02-07 21:02:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (32), 20 states have call predecessors, (32), 11 states have call successors, (32) [2025-02-07 21:02:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2025-02-07 21:02:55,595 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 42 [2025-02-07 21:02:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:55,595 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2025-02-07 21:02:55,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.375) internal successors, (57), 26 states have internal predecessors, (57), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 10 states have call successors, (11) [2025-02-07 21:02:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2025-02-07 21:02:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 21:02:55,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:55,597 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] [2025-02-07 21:02:55,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 21:02:55,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:55,801 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:55,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1454049278, now seen corresponding path program 3 times [2025-02-07 21:02:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:55,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732815661] [2025-02-07 21:02:55,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:02:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:55,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 3 equivalence classes. [2025-02-07 21:02:55,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 21:02:55,815 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 21:02:55,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:02:56,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732815661] [2025-02-07 21:02:56,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732815661] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823791844] [2025-02-07 21:02:56,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:02:56,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:56,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:56,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:02:56,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 21:02:56,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 3 equivalence classes. [2025-02-07 21:02:56,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 21:02:56,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 21:02:56,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:56,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-07 21:02:56,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:02:56,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:02:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823791844] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:58,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 30 [2025-02-07 21:02:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094942224] [2025-02-07 21:02:58,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:58,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-07 21:02:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:58,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-07 21:02:58,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2025-02-07 21:02:58,654 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 30 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2025-02-07 21:02:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:59,863 INFO L93 Difference]: Finished difference Result 113 states and 149 transitions. [2025-02-07 21:02:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 21:02:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) Word has length 43 [2025-02-07 21:02:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:59,865 INFO L225 Difference]: With dead ends: 113 [2025-02-07 21:02:59,865 INFO L226 Difference]: Without dead ends: 109 [2025-02-07 21:02:59,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=182, Invalid=1224, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 21:02:59,866 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:59,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 323 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 21:02:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-07 21:02:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2025-02-07 21:02:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 61 states have internal predecessors, (65), 12 states have call successors, (12), 4 states have call predecessors, (12), 16 states have return successors, (37), 22 states have call predecessors, (37), 12 states have call successors, (37) [2025-02-07 21:02:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2025-02-07 21:02:59,878 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 43 [2025-02-07 21:02:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:59,879 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2025-02-07 21:02:59,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 25 states have internal predecessors, (61), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2025-02-07 21:02:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2025-02-07 21:02:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-07 21:02:59,879 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:59,879 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:59,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 21:03:00,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-07 21:03:00,080 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:00,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1075425534, now seen corresponding path program 4 times [2025-02-07 21:03:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:00,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122888152] [2025-02-07 21:03:00,081 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:03:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:00,085 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-02-07 21:03:00,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:00,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:03:00,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 21:03:01,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:01,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122888152] [2025-02-07 21:03:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122888152] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:01,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251082799] [2025-02-07 21:03:01,260 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:03:01,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:01,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:01,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:01,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 21:03:01,317 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-02-07 21:03:01,330 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:01,331 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:03:01,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:01,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 21:03:01,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 21:03:02,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:03:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 21:03:05,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251082799] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:03:05,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:03:05,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 22] total 45 [2025-02-07 21:03:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356802287] [2025-02-07 21:03:05,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:03:05,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-07 21:03:05,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:03:05,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-07 21:03:05,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1837, Unknown=0, NotChecked=0, Total=1980 [2025-02-07 21:03:05,473 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 45 states, 37 states have (on average 1.972972972972973) internal successors, (73), 34 states have internal predecessors, (73), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2025-02-07 21:03:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:03:07,221 INFO L93 Difference]: Finished difference Result 146 states and 195 transitions. [2025-02-07 21:03:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-07 21:03:07,222 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 37 states have (on average 1.972972972972973) internal successors, (73), 34 states have internal predecessors, (73), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) Word has length 51 [2025-02-07 21:03:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:03:07,225 INFO L225 Difference]: With dead ends: 146 [2025-02-07 21:03:07,226 INFO L226 Difference]: Without dead ends: 142 [2025-02-07 21:03:07,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=404, Invalid=3256, Unknown=0, NotChecked=0, Total=3660 [2025-02-07 21:03:07,227 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 80 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-07 21:03:07,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 462 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-07 21:03:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-02-07 21:03:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 97. [2025-02-07 21:03:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 67 states have internal predecessors, (71), 12 states have call successors, (12), 4 states have call predecessors, (12), 19 states have return successors, (46), 25 states have call predecessors, (46), 12 states have call successors, (46) [2025-02-07 21:03:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2025-02-07 21:03:07,251 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 51 [2025-02-07 21:03:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:03:07,251 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2025-02-07 21:03:07,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 37 states have (on average 1.972972972972973) internal successors, (73), 34 states have internal predecessors, (73), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2025-02-07 21:03:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2025-02-07 21:03:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-07 21:03:07,252 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:03:07,252 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:03:07,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-07 21:03:07,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-07 21:03:07,456 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:07,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1658509642, now seen corresponding path program 5 times [2025-02-07 21:03:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176664119] [2025-02-07 21:03:07,456 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:03:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:07,464 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 4 equivalence classes. [2025-02-07 21:03:07,470 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:07,471 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-07 21:03:07,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 21:03:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:08,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176664119] [2025-02-07 21:03:08,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176664119] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:08,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189917968] [2025-02-07 21:03:08,015 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:03:08,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:08,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:08,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 21:03:08,091 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 4 equivalence classes. [2025-02-07 21:03:08,105 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:08,105 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-07 21:03:08,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:08,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 21:03:08,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 21:03:08,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:03:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 21:03:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189917968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:03:11,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:03:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 21] total 38 [2025-02-07 21:03:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431587582] [2025-02-07 21:03:11,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:03:11,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-07 21:03:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:03:11,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-07 21:03:11,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 21:03:11,868 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 38 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 29 states have internal predecessors, (72), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2025-02-07 21:03:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:03:13,678 INFO L93 Difference]: Finished difference Result 153 states and 209 transitions. [2025-02-07 21:03:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-07 21:03:13,679 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 29 states have internal predecessors, (72), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) Word has length 51 [2025-02-07 21:03:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:03:13,680 INFO L225 Difference]: With dead ends: 153 [2025-02-07 21:03:13,683 INFO L226 Difference]: Without dead ends: 149 [2025-02-07 21:03:13,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 75 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=357, Invalid=2399, Unknown=0, NotChecked=0, Total=2756 [2025-02-07 21:03:13,684 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 93 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:03:13,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 363 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-07 21:03:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2025-02-07 21:03:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 100. [2025-02-07 21:03:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 69 states have internal predecessors, (73), 12 states have call successors, (12), 4 states have call predecessors, (12), 20 states have return successors, (49), 26 states have call predecessors, (49), 12 states have call successors, (49) [2025-02-07 21:03:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 134 transitions. [2025-02-07 21:03:13,699 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 134 transitions. Word has length 51 [2025-02-07 21:03:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:03:13,700 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 134 transitions. [2025-02-07 21:03:13,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 29 states have internal predecessors, (72), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2025-02-07 21:03:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 134 transitions. [2025-02-07 21:03:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-07 21:03:13,701 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:03:13,702 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:03:13,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-07 21:03:13,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:13,907 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:13,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:13,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1551581926, now seen corresponding path program 6 times [2025-02-07 21:03:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:13,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348475585] [2025-02-07 21:03:13,908 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:03:13,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:13,912 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 4 equivalence classes. [2025-02-07 21:03:13,920 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:13,920 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-07 21:03:13,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 21:03:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348475585] [2025-02-07 21:03:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348475585] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653215946] [2025-02-07 21:03:14,581 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:03:14,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:14,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:14,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-07 21:03:14,645 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 51 statements into 4 equivalence classes. [2025-02-07 21:03:14,660 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:14,660 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-07 21:03:14,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:14,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 21:03:14,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 21:03:15,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:03:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 21:03:19,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653215946] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:03:19,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:03:19,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 18] total 44 [2025-02-07 21:03:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591678468] [2025-02-07 21:03:19,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:03:19,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-07 21:03:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:03:19,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-07 21:03:19,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1742, Unknown=0, NotChecked=0, Total=1892 [2025-02-07 21:03:19,114 INFO L87 Difference]: Start difference. First operand 100 states and 134 transitions. Second operand has 44 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 34 states have internal predecessors, (81), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (18), 12 states have call predecessors, (18), 14 states have call successors, (18) [2025-02-07 21:03:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:03:21,066 INFO L93 Difference]: Finished difference Result 201 states and 279 transitions. [2025-02-07 21:03:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-07 21:03:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 34 states have internal predecessors, (81), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (18), 12 states have call predecessors, (18), 14 states have call successors, (18) Word has length 51 [2025-02-07 21:03:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:03:21,071 INFO L225 Difference]: With dead ends: 201 [2025-02-07 21:03:21,071 INFO L226 Difference]: Without dead ends: 197 [2025-02-07 21:03:21,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 72 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=484, Invalid=3176, Unknown=0, NotChecked=0, Total=3660 [2025-02-07 21:03:21,075 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:03:21,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 665 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-07 21:03:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-02-07 21:03:21,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 105. [2025-02-07 21:03:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 72 states have internal predecessors, (77), 11 states have call successors, (11), 4 states have call predecessors, (11), 22 states have return successors, (55), 28 states have call predecessors, (55), 11 states have call successors, (55) [2025-02-07 21:03:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 143 transitions. [2025-02-07 21:03:21,124 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 143 transitions. Word has length 51 [2025-02-07 21:03:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:03:21,124 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 143 transitions. [2025-02-07 21:03:21,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 34 states have internal predecessors, (81), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (18), 12 states have call predecessors, (18), 14 states have call successors, (18) [2025-02-07 21:03:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 143 transitions. [2025-02-07 21:03:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-07 21:03:21,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:03:21,124 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:03:21,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-07 21:03:21,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:21,325 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:21,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1838266342, now seen corresponding path program 7 times [2025-02-07 21:03:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:21,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430075137] [2025-02-07 21:03:21,326 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:03:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:21,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-07 21:03:21,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:21,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:03:21,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 21:03:21,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430075137] [2025-02-07 21:03:21,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430075137] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003833060] [2025-02-07 21:03:21,851 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:03:21,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:21,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:21,855 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:21,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-07 21:03:21,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-07 21:03:21,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 21:03:21,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:03:21,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:21,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 21:03:21,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 21:03:22,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:03:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 21:03:25,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003833060] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:03:25,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:03:25,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 19] total 31 [2025-02-07 21:03:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480384485] [2025-02-07 21:03:25,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:03:25,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-07 21:03:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:03:25,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-07 21:03:25,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2025-02-07 21:03:25,012 INFO L87 Difference]: Start difference. First operand 105 states and 143 transitions. Second operand has 31 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 25 states have internal predecessors, (68), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 12 states have call successors, (15) [2025-02-07 21:03:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:03:25,942 INFO L93 Difference]: Finished difference Result 165 states and 224 transitions. [2025-02-07 21:03:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-07 21:03:25,942 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 25 states have internal predecessors, (68), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 12 states have call successors, (15) Word has length 51 [2025-02-07 21:03:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:03:25,943 INFO L225 Difference]: With dead ends: 165 [2025-02-07 21:03:25,943 INFO L226 Difference]: Without dead ends: 161 [2025-02-07 21:03:25,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2025-02-07 21:03:25,944 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 21:03:25,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 398 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 21:03:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-02-07 21:03:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 113. [2025-02-07 21:03:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 11 states have call successors, (11), 4 states have call predecessors, (11), 24 states have return successors, (61), 32 states have call predecessors, (61), 11 states have call successors, (61) [2025-02-07 21:03:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2025-02-07 21:03:25,962 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 51 [2025-02-07 21:03:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:03:25,962 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2025-02-07 21:03:25,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 25 states have internal predecessors, (68), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 12 states have call successors, (15) [2025-02-07 21:03:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2025-02-07 21:03:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-07 21:03:25,963 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:03:25,963 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:03:25,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-07 21:03:26,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-07 21:03:26,168 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:26,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 377527014, now seen corresponding path program 8 times [2025-02-07 21:03:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678805352] [2025-02-07 21:03:26,169 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:03:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:26,173 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-07 21:03:26,177 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-07 21:03:26,177 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:03:26,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 21:03:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678805352] [2025-02-07 21:03:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678805352] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505494681] [2025-02-07 21:03:26,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:03:26,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:26,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:26,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-07 21:03:27,056 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-07 21:03:27,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-07 21:03:27,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:03:27,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:27,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-07 21:03:27,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 21:03:28,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:03:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 5 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 21:03:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505494681] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:03:33,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:03:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 25] total 52 [2025-02-07 21:03:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578236294] [2025-02-07 21:03:33,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:03:33,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-07 21:03:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:03:33,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-07 21:03:33,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2491, Unknown=0, NotChecked=0, Total=2652 [2025-02-07 21:03:33,069 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 52 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (20), 15 states have call predecessors, (20), 17 states have call successors, (20) [2025-02-07 21:03:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:03:36,030 INFO L93 Difference]: Finished difference Result 189 states and 269 transitions. [2025-02-07 21:03:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-07 21:03:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (20), 15 states have call predecessors, (20), 17 states have call successors, (20) Word has length 59 [2025-02-07 21:03:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:03:36,034 INFO L225 Difference]: With dead ends: 189 [2025-02-07 21:03:36,034 INFO L226 Difference]: Without dead ends: 185 [2025-02-07 21:03:36,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 79 SyntacticMatches, 12 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=472, Invalid=4084, Unknown=0, NotChecked=0, Total=4556 [2025-02-07 21:03:36,036 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 53 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-07 21:03:36,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 660 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-07 21:03:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-02-07 21:03:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 94. [2025-02-07 21:03:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 11 states have call successors, (11), 4 states have call predecessors, (11), 18 states have return successors, (43), 25 states have call predecessors, (43), 11 states have call successors, (43) [2025-02-07 21:03:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2025-02-07 21:03:36,074 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 59 [2025-02-07 21:03:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:03:36,075 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2025-02-07 21:03:36,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (20), 15 states have call predecessors, (20), 17 states have call successors, (20) [2025-02-07 21:03:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2025-02-07 21:03:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-07 21:03:36,075 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:03:36,075 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:03:36,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-07 21:03:36,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:36,276 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:36,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1080741862, now seen corresponding path program 9 times [2025-02-07 21:03:36,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199548668] [2025-02-07 21:03:36,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:03:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:36,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 59 statements into 5 equivalence classes. [2025-02-07 21:03:36,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 59 of 59 statements. [2025-02-07 21:03:36,290 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-07 21:03:36,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 21:03:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199548668] [2025-02-07 21:03:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199548668] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529558579] [2025-02-07 21:03:37,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:03:37,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:37,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:37,083 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:37,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-07 21:03:37,186 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 59 statements into 5 equivalence classes. [2025-02-07 21:03:37,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 59 of 59 statements. [2025-02-07 21:03:37,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-07 21:03:37,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:37,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-07 21:03:37,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 21:03:38,590 INFO L312 TraceCheckSpWp]: Computing backward predicates...