./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.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 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:11:50,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:11:50,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:11:50,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:11:50,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:11:50,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:11:50,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:11:50,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:11:50,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:11:50,756 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:11:50,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:11:50,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:11:50,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:11:50,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:11:50,757 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:11:50,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:11:50,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:11:50,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:11:50,758 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 -> 461bd06f1b3f06d79cc4cf710543bc8daecc2e978ce52b7fb468042420cb9979 [2025-02-05 10:11:50,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:11:50,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:11:50,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:11:50,987 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:11:50,987 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:11:50,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2025-02-05 10:11:52,167 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/469c98526/c80ead86a89f4e72a716122306544020/FLAGee024003a [2025-02-05 10:11:52,418 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:11:52,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2025-02-05 10:11:52,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/469c98526/c80ead86a89f4e72a716122306544020/FLAGee024003a [2025-02-05 10:11:52,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/469c98526/c80ead86a89f4e72a716122306544020 [2025-02-05 10:11:52,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:11:52,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:11:52,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:11:52,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:11:52,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:11:52,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d89f267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52, skipping insertion in model container [2025-02-05 10:11:52,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:11:52,610 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/array-programs/partial_mod_count_limited_base.c[334,347] [2025-02-05 10:11:52,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:11:52,635 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:11:52,642 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/array-programs/partial_mod_count_limited_base.c[334,347] [2025-02-05 10:11:52,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:11:52,655 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:11:52,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52 WrapperNode [2025-02-05 10:11:52,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:11:52,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:11:52,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:11:52,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:11:52,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,692 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2025-02-05 10:11:52,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:11:52,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:11:52,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:11:52,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:11:52,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,714 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-05 10:11:52,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,720 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:11:52,726 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:11:52,727 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:11:52,727 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:11:52,727 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (1/1) ... [2025-02-05 10:11:52,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:11:52,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:11:52,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:11:52,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:11:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:11:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:11:52,831 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:11:52,832 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:11:52,942 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L12: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-05 10:11:52,947 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 10:11:52,947 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:11:52,956 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:11:52,956 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:11:52,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:11:52 BoogieIcfgContainer [2025-02-05 10:11:52,956 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:11:52,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:11:52,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:11:52,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:11:52,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:11:52" (1/3) ... [2025-02-05 10:11:52,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776da87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:11:52, skipping insertion in model container [2025-02-05 10:11:52,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:11:52" (2/3) ... [2025-02-05 10:11:52,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776da87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:11:52, skipping insertion in model container [2025-02-05 10:11:52,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:11:52" (3/3) ... [2025-02-05 10:11:52,965 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2025-02-05 10:11:52,978 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:11:52,979 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_base.c that has 1 procedures, 19 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 10:11:53,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:11:53,015 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;@7d2e9a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:11:53,016 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:11:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:11:53,021 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:53,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:53,021 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:53,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1315658020, now seen corresponding path program 1 times [2025-02-05 10:11:53,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:53,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207740446] [2025-02-05 10:11:53,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:53,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:11:53,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:11:53,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:53,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:11:53,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:53,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207740446] [2025-02-05 10:11:53,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207740446] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:11:53,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:11:53,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:11:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718346997] [2025-02-05 10:11:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:11:53,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 10:11:53,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:11:53,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 10:11:53,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:11:53,177 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:11:53,185 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2025-02-05 10:11:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 10:11:53,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 10:11:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:11:53,191 INFO L225 Difference]: With dead ends: 35 [2025-02-05 10:11:53,191 INFO L226 Difference]: Without dead ends: 16 [2025-02-05 10:11:53,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:11:53,196 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:11:53,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:11:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-05 10:11:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-05 10:11:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2025-02-05 10:11:53,223 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2025-02-05 10:11:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:11:53,223 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2025-02-05 10:11:53,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2025-02-05 10:11:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:11:53,225 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:53,225 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:53,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:11:53,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:53,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash 427152315, now seen corresponding path program 1 times [2025-02-05 10:11:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:53,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627676967] [2025-02-05 10:11:53,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:53,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:53,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:11:53,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:11:53,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:53,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:11:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627676967] [2025-02-05 10:11:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627676967] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:11:53,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:11:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:11:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767662216] [2025-02-05 10:11:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:11:53,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:11:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:11:53,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:11:53,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:11:53,384 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:11:53,434 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2025-02-05 10:11:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:11:53,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 10:11:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:11:53,438 INFO L225 Difference]: With dead ends: 40 [2025-02-05 10:11:53,438 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 10:11:53,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:11:53,439 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:11:53,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:11:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 10:11:53,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2025-02-05 10:11:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-02-05 10:11:53,446 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-02-05 10:11:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:11:53,446 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-02-05 10:11:53,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-02-05 10:11:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 10:11:53,447 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:53,447 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:53,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:11:53,447 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:53,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -108668177, now seen corresponding path program 1 times [2025-02-05 10:11:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:53,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091986411] [2025-02-05 10:11:53,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:53,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:11:53,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:11:53,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:53,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:11:53,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:53,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091986411] [2025-02-05 10:11:53,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091986411] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:11:53,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:11:53,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 10:11:53,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723305847] [2025-02-05 10:11:53,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:11:53,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 10:11:53,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:11:53,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 10:11:53,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:11:53,663 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:11:53,712 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2025-02-05 10:11:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:11:53,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-05 10:11:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:11:53,713 INFO L225 Difference]: With dead ends: 30 [2025-02-05 10:11:53,713 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 10:11:53,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:11:53,717 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:11:53,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:11:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 10:11:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-02-05 10:11:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2025-02-05 10:11:53,723 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 15 [2025-02-05 10:11:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:11:53,723 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2025-02-05 10:11:53,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2025-02-05 10:11:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-05 10:11:53,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:53,725 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:53,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:11:53,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:53,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -65866530, now seen corresponding path program 1 times [2025-02-05 10:11:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:53,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59763786] [2025-02-05 10:11:53,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:53,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 10:11:53,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:11:53,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:53,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59763786] [2025-02-05 10:11:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59763786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:11:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915150851] [2025-02-05 10:11:53,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:53,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:53,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:11:53,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:11:53,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:11:53,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 10:11:53,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:11:53,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:53,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:53,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:11:53,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:11:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:53,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:11:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:53,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915150851] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:11:53,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:11:53,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-05 10:11:53,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065286688] [2025-02-05 10:11:53,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:11:53,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 10:11:53,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:11:53,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 10:11:53,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:11:53,958 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:11:54,027 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2025-02-05 10:11:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:11:54,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-05 10:11:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:11:54,028 INFO L225 Difference]: With dead ends: 107 [2025-02-05 10:11:54,028 INFO L226 Difference]: Without dead ends: 85 [2025-02-05 10:11:54,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:11:54,029 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:11:54,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 39 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:11:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-05 10:11:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 42. [2025-02-05 10:11:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2025-02-05 10:11:54,034 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 20 [2025-02-05 10:11:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:11:54,034 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2025-02-05 10:11:54,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2025-02-05 10:11:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 10:11:54,034 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:54,034 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:54,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:11:54,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:54,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:54,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:54,235 INFO L85 PathProgramCache]: Analyzing trace with hash 142072306, now seen corresponding path program 1 times [2025-02-05 10:11:54,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:54,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496059867] [2025-02-05 10:11:54,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:54,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:54,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 10:11:54,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:11:54,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:54,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496059867] [2025-02-05 10:11:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496059867] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:11:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364333139] [2025-02-05 10:11:54,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:11:54,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:11:54,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:11:54,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:11:54,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 10:11:54,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:11:54,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:11:54,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:54,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 10:11:54,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:11:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:54,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:11:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:54,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364333139] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:11:54,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:11:54,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-02-05 10:11:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886300119] [2025-02-05 10:11:54,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:11:54,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:11:54,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:11:54,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:11:54,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:11:54,697 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:11:54,873 INFO L93 Difference]: Finished difference Result 243 states and 302 transitions. [2025-02-05 10:11:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:11:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-02-05 10:11:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:11:54,874 INFO L225 Difference]: With dead ends: 243 [2025-02-05 10:11:54,874 INFO L226 Difference]: Without dead ends: 217 [2025-02-05 10:11:54,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:11:54,875 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 268 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:11:54,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 104 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:11:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-05 10:11:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 72. [2025-02-05 10:11:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 71 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2025-02-05 10:11:54,883 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 35 [2025-02-05 10:11:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:11:54,883 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2025-02-05 10:11:54,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2025-02-05 10:11:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-05 10:11:54,884 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:54,884 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:54,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 10:11:55,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:55,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:55,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1833013265, now seen corresponding path program 2 times [2025-02-05 10:11:55,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:55,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198486876] [2025-02-05 10:11:55,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:11:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:55,099 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-05 10:11:55,128 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 10:11:55,128 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:11:55,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 129 proven. 60 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-05 10:11:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198486876] [2025-02-05 10:11:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198486876] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:11:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307954888] [2025-02-05 10:11:55,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:11:55,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:55,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:11:55,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:11:55,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:11:55,517 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-05 10:11:55,558 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-05 10:11:55,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:11:55,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:55,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 10:11:55,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:11:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:55,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:11:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:11:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307954888] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:11:56,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:11:56,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2025-02-05 10:11:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567202927] [2025-02-05 10:11:56,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:11:56,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 10:11:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:11:56,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 10:11:56,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2025-02-05 10:11:56,214 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 32 states, 32 states have (on average 4.71875) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:11:56,678 INFO L93 Difference]: Finished difference Result 522 states and 650 transitions. [2025-02-05 10:11:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 10:11:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-05 10:11:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:11:56,680 INFO L225 Difference]: With dead ends: 522 [2025-02-05 10:11:56,680 INFO L226 Difference]: Without dead ends: 481 [2025-02-05 10:11:56,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 10:11:56,682 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 731 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:11:56,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 203 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:11:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2025-02-05 10:11:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 132. [2025-02-05 10:11:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 131 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2025-02-05 10:11:56,696 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 65 [2025-02-05 10:11:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:11:56,696 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2025-02-05 10:11:56,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:11:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2025-02-05 10:11:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 10:11:56,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:11:56,698 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:11:56,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 10:11:56,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:56,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:11:56,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:11:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash -449357071, now seen corresponding path program 3 times [2025-02-05 10:11:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:11:56,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743489238] [2025-02-05 10:11:56,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:11:56,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:11:56,926 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 125 statements into 23 equivalence classes. [2025-02-05 10:11:57,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 90 of 125 statements. [2025-02-05 10:11:57,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-02-05 10:11:57,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:11:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-02-05 10:11:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:11:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743489238] [2025-02-05 10:11:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743489238] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:11:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52911317] [2025-02-05 10:11:57,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:11:57,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:11:57,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:11:57,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:11:57,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:11:58,009 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 125 statements into 23 equivalence classes. [2025-02-05 10:12:02,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 90 of 125 statements. [2025-02-05 10:12:02,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-02-05 10:12:02,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:12:02,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 10:12:02,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:12:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 613 proven. 319 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-02-05 10:12:02,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:12:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-02-05 10:12:03,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52911317] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:12:03,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:12:03,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 46 [2025-02-05 10:12:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258058880] [2025-02-05 10:12:03,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:12:03,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-05 10:12:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:12:03,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-05 10:12:03,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=1441, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 10:12:03,573 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 47 states, 47 states have (on average 4.531914893617022) internal successors, (213), 46 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:12:08,311 INFO L93 Difference]: Finished difference Result 3190 states and 4214 transitions. [2025-02-05 10:12:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2025-02-05 10:12:08,311 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.531914893617022) internal successors, (213), 46 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2025-02-05 10:12:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:12:08,321 INFO L225 Difference]: With dead ends: 3190 [2025-02-05 10:12:08,321 INFO L226 Difference]: Without dead ends: 3173 [2025-02-05 10:12:08,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16657 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=12328, Invalid=27472, Unknown=0, NotChecked=0, Total=39800 [2025-02-05 10:12:08,333 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 1829 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:12:08,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 577 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:12:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2025-02-05 10:12:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 457. [2025-02-05 10:12:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.3399122807017543) internal successors, (611), 456 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 611 transitions. [2025-02-05 10:12:08,381 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 611 transitions. Word has length 125 [2025-02-05 10:12:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:12:08,381 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 611 transitions. [2025-02-05 10:12:08,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.531914893617022) internal successors, (213), 46 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 611 transitions. [2025-02-05 10:12:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 10:12:08,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:12:08,384 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:12:08,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 10:12:08,588 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,SelfDestructingSolverStorable6 [2025-02-05 10:12:08,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:12:08,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:12:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash -881955759, now seen corresponding path program 1 times [2025-02-05 10:12:08,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:12:08,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25856863] [2025-02-05 10:12:08,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:12:08,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:12:08,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 10:12:08,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 10:12:08,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:12:08,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:12:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 7 proven. 1065 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-05 10:12:09,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:12:09,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25856863] [2025-02-05 10:12:09,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25856863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:12:09,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214194687] [2025-02-05 10:12:09,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:12:09,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:12:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:12:09,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:12:09,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:12:09,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 10:12:09,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 10:12:09,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:12:09,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:12:09,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 10:12:09,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:12:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:12:09,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:12:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:12:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214194687] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:12:10,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:12:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 25] total 68 [2025-02-05 10:12:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820598092] [2025-02-05 10:12:10,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:12:10,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-02-05 10:12:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:12:10,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-02-05 10:12:10,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1879, Invalid=2813, Unknown=0, NotChecked=0, Total=4692 [2025-02-05 10:12:10,672 INFO L87 Difference]: Start difference. First operand 457 states and 611 transitions. Second operand has 69 states, 69 states have (on average 4.63768115942029) internal successors, (320), 68 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:12:15,647 INFO L93 Difference]: Finished difference Result 6682 states and 9010 transitions. [2025-02-05 10:12:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2025-02-05 10:12:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.63768115942029) internal successors, (320), 68 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2025-02-05 10:12:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:12:15,666 INFO L225 Difference]: With dead ends: 6682 [2025-02-05 10:12:15,666 INFO L226 Difference]: Without dead ends: 6340 [2025-02-05 10:12:15,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13169 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10928, Invalid=22744, Unknown=0, NotChecked=0, Total=33672 [2025-02-05 10:12:15,674 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2005 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:12:15,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 402 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:12:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2025-02-05 10:12:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 2166. [2025-02-05 10:12:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 1.3782909930715936) internal successors, (2984), 2165 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 2984 transitions. [2025-02-05 10:12:15,827 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 2984 transitions. Word has length 125 [2025-02-05 10:12:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:12:15,827 INFO L471 AbstractCegarLoop]: Abstraction has 2166 states and 2984 transitions. [2025-02-05 10:12:15,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.63768115942029) internal successors, (320), 68 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 2984 transitions. [2025-02-05 10:12:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2025-02-05 10:12:15,835 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:12:15,836 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 24, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:12:15,845 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 [2025-02-05 10:12:16,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:12:16,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:12:16,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:12:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1838506195, now seen corresponding path program 1 times [2025-02-05 10:12:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:12:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106260177] [2025-02-05 10:12:16,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:12:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:12:16,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-02-05 10:12:16,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-02-05 10:12:16,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:12:16,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:12:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 2667 proven. 1311 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2025-02-05 10:12:17,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:12:17,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106260177] [2025-02-05 10:12:17,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106260177] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:12:17,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702341217] [2025-02-05 10:12:17,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:12:17,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:12:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:12:17,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:12:17,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:12:17,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-02-05 10:12:18,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-02-05 10:12:18,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:12:18,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:12:18,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-05 10:12:18,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:12:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:12:19,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:12:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:12:21,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702341217] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:12:21,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:12:21,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 49, 49] total 121 [2025-02-05 10:12:21,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522976143] [2025-02-05 10:12:21,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:12:21,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2025-02-05 10:12:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:12:21,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2025-02-05 10:12:21,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5378, Invalid=9384, Unknown=0, NotChecked=0, Total=14762 [2025-02-05 10:12:21,788 INFO L87 Difference]: Start difference. First operand 2166 states and 2984 transitions. Second operand has 122 states, 122 states have (on average 4.942622950819672) internal successors, (603), 121 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:12:32,633 INFO L93 Difference]: Finished difference Result 58696 states and 79753 transitions. [2025-02-05 10:12:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-02-05 10:12:32,634 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 4.942622950819672) internal successors, (603), 121 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2025-02-05 10:12:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:12:32,735 INFO L225 Difference]: With dead ends: 58696 [2025-02-05 10:12:32,735 INFO L226 Difference]: Without dead ends: 56656 [2025-02-05 10:12:32,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8857 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=10031, Invalid=18361, Unknown=0, NotChecked=0, Total=28392 [2025-02-05 10:12:32,750 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5539 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 10:12:32,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5539 Valid, 898 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 10:12:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56656 states. [2025-02-05 10:12:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56656 to 5885. [2025-02-05 10:12:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5885 states, 5884 states have (on average 1.290958531611149) internal successors, (7596), 5884 states have internal predecessors, (7596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5885 states to 5885 states and 7596 transitions. [2025-02-05 10:12:34,292 INFO L78 Accepts]: Start accepts. Automaton has 5885 states and 7596 transitions. Word has length 245 [2025-02-05 10:12:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:12:34,292 INFO L471 AbstractCegarLoop]: Abstraction has 5885 states and 7596 transitions. [2025-02-05 10:12:34,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 4.942622950819672) internal successors, (603), 121 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:12:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5885 states and 7596 transitions. [2025-02-05 10:12:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2025-02-05 10:12:34,302 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:12:34,302 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:12:34,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 10:12:34,507 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,SelfDestructingSolverStorable8 [2025-02-05 10:12:34,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:12:34,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:12:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash 920679473, now seen corresponding path program 4 times [2025-02-05 10:12:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:12:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-02-05 10:12:34,508 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:12:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:12:34,559 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 485 statements into 2 equivalence classes. [2025-02-05 10:12:34,672 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 485 of 485 statements. [2025-02-05 10:12:34,672 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:12:34,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:12:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:12:45,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:12:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-02-05 10:12:45,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334976414] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:12:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292775143] [2025-02-05 10:12:45,748 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:12:45,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:12:45,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:12:45,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:12:45,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 10:12:45,897 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 485 statements into 2 equivalence classes.