./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.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 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:06:55,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:06:55,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:06:55,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:06:55,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:06:55,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:06:55,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:06:55,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:06:55,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:06:55,471 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:06:55,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:06:55,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:06:55,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:06:55,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:06:55,472 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:06:55,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:06:55,473 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:06:55,474 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:06:55,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:06:55,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:06:55,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:06:55,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:06:55,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:06:55,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:06:55,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:06:55,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:06:55,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:06:55,476 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 -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2025-01-09 04:06:55,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:06:55,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:06:55,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:06:55,760 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:06:55,760 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:06:55,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2025-01-09 04:06:56,966 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c3a00773/1a9cb01d8f734556af20e5c3f018729f/FLAG9d592dbaf [2025-01-09 04:06:57,184 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:06:57,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2025-01-09 04:06:57,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c3a00773/1a9cb01d8f734556af20e5c3f018729f/FLAG9d592dbaf [2025-01-09 04:06:57,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c3a00773/1a9cb01d8f734556af20e5c3f018729f [2025-01-09 04:06:57,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:06:57,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:06:57,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:06:57,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:06:57,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:06:57,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74781be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57, skipping insertion in model container [2025-01-09 04:06:57,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:06:57,702 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2025-01-09 04:06:57,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:06:57,716 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:06:57,731 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2025-01-09 04:06:57,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:06:57,743 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:06:57,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57 WrapperNode [2025-01-09 04:06:57,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:06:57,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:06:57,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:06:57,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:06:57,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,771 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-01-09 04:06:57,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:06:57,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:06:57,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:06:57,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:06:57,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,796 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:06:57,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,800 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:06:57,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:06:57,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:06:57,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:06:57,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (1/1) ... [2025-01-09 04:06:57,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:06:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:57,844 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) [2025-01-09 04:06:57,849 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 [2025-01-09 04:06:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:06:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:06:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-01-09 04:06:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-01-09 04:06:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-01-09 04:06:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-01-09 04:06:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:06:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:06:57,908 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:06:57,910 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:06:58,003 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 04:06:58,005 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:06:58,010 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:06:58,012 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:06:58,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:06:58 BoogieIcfgContainer [2025-01-09 04:06:58,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:06:58,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:06:58,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:06:58,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:06:58,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:06:57" (1/3) ... [2025-01-09 04:06:58,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268e8333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:06:58, skipping insertion in model container [2025-01-09 04:06:58,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:06:57" (2/3) ... [2025-01-09 04:06:58,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268e8333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:06:58, skipping insertion in model container [2025-01-09 04:06:58,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:06:58" (3/3) ... [2025-01-09 04:06:58,019 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2025-01-09 04:06:58,029 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:06:58,030 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_8-1.c that has 3 procedures, 29 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:06:58,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:06:58,078 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;@6ea8f743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:06:58,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:06:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:06:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:06:58,084 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:58,085 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:58,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:58,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2025-01-09 04:06:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:58,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644923967] [2025-01-09 04:06:58,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:58,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:58,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:06:58,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:06:58,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:58,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:06:58,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:58,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644923967] [2025-01-09 04:06:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644923967] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:06:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:06:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:06:58,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023596755] [2025-01-09 04:06:58,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:06:58,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:06:58,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:58,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:06:58,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:06:58,263 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:06:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:58,329 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2025-01-09 04:06:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:06:58,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-01-09 04:06:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:58,335 INFO L225 Difference]: With dead ends: 41 [2025-01-09 04:06:58,335 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 04:06:58,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:06:58,338 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:58,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 04:06:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-01-09 04:06:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:06:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-09 04:06:58,362 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2025-01-09 04:06:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:58,362 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-09 04:06:58,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:06:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-09 04:06:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 04:06:58,365 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:58,365 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:58,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:06:58,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:58,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2025-01-09 04:06:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:58,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19825022] [2025-01-09 04:06:58,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:58,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 04:06:58,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 04:06:58,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:58,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:06:58,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:58,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19825022] [2025-01-09 04:06:58,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19825022] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:06:58,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:06:58,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:06:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610387161] [2025-01-09 04:06:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:06:58,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:06:58,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:58,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:06:58,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:06:58,419 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:06:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:58,455 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2025-01-09 04:06:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:06:58,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 04:06:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:58,456 INFO L225 Difference]: With dead ends: 33 [2025-01-09 04:06:58,457 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 04:06:58,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:06:58,457 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:58,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:06:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 04:06:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2025-01-09 04:06:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-01-09 04:06:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-09 04:06:58,465 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2025-01-09 04:06:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:58,465 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-09 04:06:58,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:06:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-09 04:06:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 04:06:58,466 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:58,466 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:58,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:06:58,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:58,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2025-01-09 04:06:58,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:58,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277617011] [2025-01-09 04:06:58,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:58,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:06:58,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:06:58,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:58,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:06:58,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277617011] [2025-01-09 04:06:58,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277617011] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124572283] [2025-01-09 04:06:58,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:58,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:58,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:58,567 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) [2025-01-09 04:06:58,569 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 [2025-01-09 04:06:58,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:06:58,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:06:58,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:58,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:58,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:06:58,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:06:58,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:06:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124572283] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:58,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-01-09 04:06:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164021564] [2025-01-09 04:06:58,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:58,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:06:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:58,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:06:58,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:06:58,921 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:06:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:59,024 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2025-01-09 04:06:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:06:59,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2025-01-09 04:06:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:59,026 INFO L225 Difference]: With dead ends: 55 [2025-01-09 04:06:59,026 INFO L226 Difference]: Without dead ends: 31 [2025-01-09 04:06:59,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:06:59,027 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:59,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-01-09 04:06:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2025-01-09 04:06:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-01-09 04:06:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2025-01-09 04:06:59,031 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2025-01-09 04:06:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:59,032 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2025-01-09 04:06:59,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:06:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2025-01-09 04:06:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 04:06:59,033 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:59,033 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:59,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 04:06:59,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:59,234 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:59,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2025-01-09 04:06:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996986739] [2025-01-09 04:06:59,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:59,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:59,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:06:59,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:06:59,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:59,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:06:59,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996986739] [2025-01-09 04:06:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996986739] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925534199] [2025-01-09 04:06:59,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:59,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:59,340 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) [2025-01-09 04:06:59,342 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 [2025-01-09 04:06:59,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:06:59,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:06:59,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:59,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:59,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:06:59,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:06:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:06:59,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:06:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:06:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925534199] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:06:59,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:06:59,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-01-09 04:06:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880528387] [2025-01-09 04:06:59,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:06:59,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 04:06:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:06:59,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 04:06:59,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:06:59,600 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:06:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:06:59,686 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2025-01-09 04:06:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:06:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2025-01-09 04:06:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:06:59,687 INFO L225 Difference]: With dead ends: 40 [2025-01-09 04:06:59,687 INFO L226 Difference]: Without dead ends: 36 [2025-01-09 04:06:59,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:06:59,688 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:06:59,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:06:59,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-09 04:06:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2025-01-09 04:06:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-09 04:06:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2025-01-09 04:06:59,693 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2025-01-09 04:06:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:06:59,693 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2025-01-09 04:06:59,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:06:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2025-01-09 04:06:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 04:06:59,694 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:06:59,694 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:06:59,700 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 [2025-01-09 04:06:59,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:59,899 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:06:59,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:06:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2025-01-09 04:06:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:06:59,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251842441] [2025-01-09 04:06:59,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:59,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:06:59,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 04:06:59,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 04:06:59,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:06:59,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:06:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 04:06:59,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:06:59,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251842441] [2025-01-09 04:06:59,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251842441] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:06:59,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16542592] [2025-01-09 04:06:59,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:06:59,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:06:59,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:06:59,960 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) [2025-01-09 04:06:59,961 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 [2025-01-09 04:06:59,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 04:07:00,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 04:07:00,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:00,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:00,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:07:00,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:07:00,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:07:00,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16542592] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:00,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2025-01-09 04:07:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527071638] [2025-01-09 04:07:00,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:00,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 04:07:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:00,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 04:07:00,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:07:00,332 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:07:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:00,443 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2025-01-09 04:07:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:07:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2025-01-09 04:07:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:00,444 INFO L225 Difference]: With dead ends: 69 [2025-01-09 04:07:00,444 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 04:07:00,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:00,445 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:00,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 04:07:00,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2025-01-09 04:07:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2025-01-09 04:07:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2025-01-09 04:07:00,450 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2025-01-09 04:07:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:00,450 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2025-01-09 04:07:00,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:07:00,451 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2025-01-09 04:07:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 04:07:00,451 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:00,452 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:00,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:00,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:00,656 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:00,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2025-01-09 04:07:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149833798] [2025-01-09 04:07:00,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:00,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 04:07:00,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:07:00,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:00,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 04:07:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149833798] [2025-01-09 04:07:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149833798] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074656422] [2025-01-09 04:07:00,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:00,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:00,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:00,761 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) [2025-01-09 04:07:00,763 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 [2025-01-09 04:07:00,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 04:07:00,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:07:00,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:00,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:00,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:07:00,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 04:07:00,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:07:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074656422] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:01,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:01,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-01-09 04:07:01,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317172286] [2025-01-09 04:07:01,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:01,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:07:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:01,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:07:01,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:07:01,106 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:07:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:01,414 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2025-01-09 04:07:01,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:07:01,414 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2025-01-09 04:07:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:01,415 INFO L225 Difference]: With dead ends: 101 [2025-01-09 04:07:01,418 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 04:07:01,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:07:01,420 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:01,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:07:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 04:07:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2025-01-09 04:07:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2025-01-09 04:07:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2025-01-09 04:07:01,430 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2025-01-09 04:07:01,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:01,430 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2025-01-09 04:07:01,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2025-01-09 04:07:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2025-01-09 04:07:01,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 04:07:01,432 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:01,432 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:01,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:01,636 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,SelfDestructingSolverStorable5 [2025-01-09 04:07:01,636 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:01,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2025-01-09 04:07:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:01,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91093354] [2025-01-09 04:07:01,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:01,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 04:07:01,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 04:07:01,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:01,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 04:07:01,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:01,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91093354] [2025-01-09 04:07:01,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91093354] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:01,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198095093] [2025-01-09 04:07:01,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:01,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:01,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:01,737 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) [2025-01-09 04:07:01,739 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 [2025-01-09 04:07:01,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 04:07:01,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 04:07:01,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:01,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:01,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:07:01,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 04:07:01,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 04:07:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198095093] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:02,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:02,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2025-01-09 04:07:02,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731531454] [2025-01-09 04:07:02,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:02,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:02,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:02,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:02,177 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:07:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:02,327 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2025-01-09 04:07:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 04:07:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2025-01-09 04:07:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:02,329 INFO L225 Difference]: With dead ends: 102 [2025-01-09 04:07:02,330 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 04:07:02,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:07:02,331 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:02,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 164 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 04:07:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2025-01-09 04:07:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2025-01-09 04:07:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2025-01-09 04:07:02,344 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2025-01-09 04:07:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:02,344 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2025-01-09 04:07:02,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:07:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2025-01-09 04:07:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 04:07:02,346 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:02,347 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:02,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 04:07:02,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:02,549 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:02,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2025-01-09 04:07:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:02,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547580088] [2025-01-09 04:07:02,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:02,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 04:07:02,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 04:07:02,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:02,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-09 04:07:02,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:02,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547580088] [2025-01-09 04:07:02,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547580088] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:02,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046523992] [2025-01-09 04:07:02,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:07:02,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:02,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:02,723 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) [2025-01-09 04:07:02,724 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 [2025-01-09 04:07:02,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 04:07:02,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 04:07:02,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:02,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:02,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:07:02,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-01-09 04:07:02,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-01-09 04:07:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046523992] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:03,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2025-01-09 04:07:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7536125] [2025-01-09 04:07:03,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:03,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:07:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:03,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:07:03,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:07:03,502 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2025-01-09 04:07:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:03,960 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2025-01-09 04:07:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 04:07:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2025-01-09 04:07:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:03,963 INFO L225 Difference]: With dead ends: 177 [2025-01-09 04:07:03,963 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 04:07:03,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:07:03,965 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:03,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:07:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 04:07:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2025-01-09 04:07:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2025-01-09 04:07:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2025-01-09 04:07:03,981 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2025-01-09 04:07:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:03,982 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2025-01-09 04:07:03,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2025-01-09 04:07:03,982 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2025-01-09 04:07:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-01-09 04:07:03,985 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:03,985 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:04,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 04:07:04,189 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,SelfDestructingSolverStorable7 [2025-01-09 04:07:04,189 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:04,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:04,190 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2025-01-09 04:07:04,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:04,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073712139] [2025-01-09 04:07:04,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:04,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 159 statements into 2 equivalence classes. [2025-01-09 04:07:04,217 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 159 of 159 statements. [2025-01-09 04:07:04,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:04,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2025-01-09 04:07:04,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:04,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073712139] [2025-01-09 04:07:04,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073712139] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:04,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982421067] [2025-01-09 04:07:04,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:04,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:04,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:04,409 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) [2025-01-09 04:07:04,411 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 [2025-01-09 04:07:04,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 159 statements into 2 equivalence classes. [2025-01-09 04:07:04,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 159 of 159 statements. [2025-01-09 04:07:04,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:04,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:04,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:04,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2025-01-09 04:07:04,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-01-09 04:07:05,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982421067] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:05,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:05,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2025-01-09 04:07:05,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495466019] [2025-01-09 04:07:05,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:05,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:07:05,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:05,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:07:05,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:07:05,624 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 04:07:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:05,854 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2025-01-09 04:07:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 04:07:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2025-01-09 04:07:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:05,857 INFO L225 Difference]: With dead ends: 132 [2025-01-09 04:07:05,857 INFO L226 Difference]: Without dead ends: 128 [2025-01-09 04:07:05,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2025-01-09 04:07:05,858 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:05,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 196 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:07:05,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-09 04:07:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2025-01-09 04:07:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2025-01-09 04:07:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2025-01-09 04:07:05,882 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2025-01-09 04:07:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:05,882 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2025-01-09 04:07:05,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 04:07:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2025-01-09 04:07:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2025-01-09 04:07:05,885 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:05,885 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:05,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 04:07:06,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:06,089 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:06,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2025-01-09 04:07:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:06,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183459921] [2025-01-09 04:07:06,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:06,105 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 284 statements into 2 equivalence classes. [2025-01-09 04:07:06,143 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 284 of 284 statements. [2025-01-09 04:07:06,143 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:06,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2025-01-09 04:07:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183459921] [2025-01-09 04:07:06,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183459921] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865959318] [2025-01-09 04:07:06,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:06,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:06,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:06,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:06,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 04:07:06,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 284 statements into 2 equivalence classes. [2025-01-09 04:07:06,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 284 of 284 statements. [2025-01-09 04:07:06,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:06,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:06,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:07:06,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2025-01-09 04:07:06,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2025-01-09 04:07:08,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865959318] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:08,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:08,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 28 [2025-01-09 04:07:08,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014518153] [2025-01-09 04:07:08,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:08,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:07:08,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:08,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:07:08,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:07:08,460 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2025-01-09 04:07:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:09,320 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2025-01-09 04:07:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 04:07:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) Word has length 284 [2025-01-09 04:07:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:09,325 INFO L225 Difference]: With dead ends: 323 [2025-01-09 04:07:09,326 INFO L226 Difference]: Without dead ends: 214 [2025-01-09 04:07:09,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=446, Invalid=2310, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 04:07:09,330 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:09,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 460 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:07:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-01-09 04:07:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2025-01-09 04:07:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2025-01-09 04:07:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2025-01-09 04:07:09,378 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2025-01-09 04:07:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:09,378 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2025-01-09 04:07:09,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2025-01-09 04:07:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2025-01-09 04:07:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2025-01-09 04:07:09,387 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:09,387 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 29, 22, 19, 19, 19, 19, 19, 19, 19, 15, 14, 14, 14, 14, 14, 14, 14, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:09,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:09,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:09,588 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:09,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash 73048603, now seen corresponding path program 3 times [2025-01-09 04:07:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:09,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247368077] [2025-01-09 04:07:09,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:09,606 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 457 statements into 27 equivalence classes. [2025-01-09 04:07:09,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 90 of 457 statements. [2025-01-09 04:07:09,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 04:07:09,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 565 proven. 43 refuted. 0 times theorem prover too weak. 5513 trivial. 0 not checked. [2025-01-09 04:07:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247368077] [2025-01-09 04:07:09,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247368077] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896149968] [2025-01-09 04:07:09,736 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:09,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:09,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 04:07:09,897 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 457 statements into 27 equivalence classes. [2025-01-09 04:07:09,923 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 90 of 457 statements. [2025-01-09 04:07:09,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 04:07:09,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:09,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:07:09,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 1469 proven. 6 refuted. 0 times theorem prover too weak. 4646 trivial. 0 not checked. [2025-01-09 04:07:10,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 689 proven. 54 refuted. 0 times theorem prover too weak. 5378 trivial. 0 not checked. [2025-01-09 04:07:11,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896149968] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:11,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:11,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-01-09 04:07:11,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776154732] [2025-01-09 04:07:11,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:11,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 04:07:11,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:11,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 04:07:11,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:11,079 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2025-01-09 04:07:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:11,193 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2025-01-09 04:07:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:07:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) Word has length 457 [2025-01-09 04:07:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:11,195 INFO L225 Difference]: With dead ends: 360 [2025-01-09 04:07:11,195 INFO L226 Difference]: Without dead ends: 181 [2025-01-09 04:07:11,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 904 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:07:11,197 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:11,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 133 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-01-09 04:07:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2025-01-09 04:07:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 116 states have internal predecessors, (138), 33 states have call successors, (33), 18 states have call predecessors, (33), 22 states have return successors, (95), 39 states have call predecessors, (95), 33 states have call successors, (95) [2025-01-09 04:07:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2025-01-09 04:07:11,208 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 457 [2025-01-09 04:07:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:11,208 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2025-01-09 04:07:11,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2025-01-09 04:07:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2025-01-09 04:07:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2025-01-09 04:07:11,212 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:11,212 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 28, 27, 19, 19, 19, 19, 19, 19, 19, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:11,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 04:07:11,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:11,416 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:11,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2025-01-09 04:07:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:11,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520207750] [2025-01-09 04:07:11,417 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:11,427 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 461 statements into 2 equivalence classes. [2025-01-09 04:07:11,450 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 392 of 461 statements. [2025-01-09 04:07:11,450 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:11,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2025-01-09 04:07:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:11,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520207750] [2025-01-09 04:07:11,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520207750] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:11,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356981003] [2025-01-09 04:07:11,724 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:11,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:11,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:11,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:11,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 04:07:11,819 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 461 statements into 2 equivalence classes. [2025-01-09 04:07:11,880 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 392 of 461 statements. [2025-01-09 04:07:11,881 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:11,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:11,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:11,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2025-01-09 04:07:11,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 853 refuted. 0 times theorem prover too weak. 5189 trivial. 0 not checked. [2025-01-09 04:07:13,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356981003] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:13,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:13,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2025-01-09 04:07:13,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645508002] [2025-01-09 04:07:13,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:13,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:13,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:13,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:13,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:13,487 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2025-01-09 04:07:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:13,632 INFO L93 Difference]: Finished difference Result 201 states and 325 transitions. [2025-01-09 04:07:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:13,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 461 [2025-01-09 04:07:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:13,635 INFO L225 Difference]: With dead ends: 201 [2025-01-09 04:07:13,635 INFO L226 Difference]: Without dead ends: 197 [2025-01-09 04:07:13,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 913 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:07:13,636 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:13,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 168 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-01-09 04:07:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 184. [2025-01-09 04:07:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 122 states have internal predecessors, (144), 35 states have call successors, (35), 18 states have call predecessors, (35), 24 states have return successors, (114), 43 states have call predecessors, (114), 35 states have call successors, (114) [2025-01-09 04:07:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 293 transitions. [2025-01-09 04:07:13,659 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 293 transitions. Word has length 461 [2025-01-09 04:07:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:13,659 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 293 transitions. [2025-01-09 04:07:13,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2025-01-09 04:07:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 293 transitions. [2025-01-09 04:07:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2025-01-09 04:07:13,665 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:13,665 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 33, 33, 31, 30, 21, 21, 21, 21, 21, 21, 21, 16, 16, 16, 16, 16, 16, 16, 14, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:13,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:13,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 04:07:13,866 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:13,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1388837487, now seen corresponding path program 5 times [2025-01-09 04:07:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:13,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828721510] [2025-01-09 04:07:13,867 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:13,881 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 515 statements into 31 equivalence classes. [2025-01-09 04:07:13,899 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 183 of 515 statements. [2025-01-09 04:07:13,900 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-09 04:07:13,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 456 proven. 647 refuted. 0 times theorem prover too weak. 6673 trivial. 0 not checked. [2025-01-09 04:07:14,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828721510] [2025-01-09 04:07:14,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828721510] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788671929] [2025-01-09 04:07:14,032 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:14,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:14,038 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:14,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 04:07:14,149 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 515 statements into 31 equivalence classes. [2025-01-09 04:07:14,183 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 183 of 515 statements. [2025-01-09 04:07:14,183 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-09 04:07:14,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:14,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:07:14,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 3938 proven. 19 refuted. 0 times theorem prover too weak. 3819 trivial. 0 not checked. [2025-01-09 04:07:14,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 493 proven. 750 refuted. 0 times theorem prover too weak. 6533 trivial. 0 not checked. [2025-01-09 04:07:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788671929] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:15,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 17 [2025-01-09 04:07:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681619342] [2025-01-09 04:07:15,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:15,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:15,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:15,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:15,955 INFO L87 Difference]: Start difference. First operand 184 states and 293 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) [2025-01-09 04:07:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:16,088 INFO L93 Difference]: Finished difference Result 337 states and 564 transitions. [2025-01-09 04:07:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) Word has length 515 [2025-01-09 04:07:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:16,091 INFO L225 Difference]: With dead ends: 337 [2025-01-09 04:07:16,091 INFO L226 Difference]: Without dead ends: 139 [2025-01-09 04:07:16,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1019 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:07:16,093 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:16,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 174 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-01-09 04:07:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2025-01-09 04:07:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 95 states have internal predecessors, (112), 24 states have call successors, (24), 16 states have call predecessors, (24), 18 states have return successors, (67), 27 states have call predecessors, (67), 24 states have call successors, (67) [2025-01-09 04:07:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 203 transitions. [2025-01-09 04:07:16,103 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 203 transitions. Word has length 515 [2025-01-09 04:07:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:16,105 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 203 transitions. [2025-01-09 04:07:16,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) [2025-01-09 04:07:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 203 transitions. [2025-01-09 04:07:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2025-01-09 04:07:16,123 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:16,123 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 23, 23, 22, 20, 14, 14, 14, 14, 14, 14, 14, 11, 11, 11, 11, 11, 11, 11, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:16,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:16,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 04:07:16,324 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:16,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -192413695, now seen corresponding path program 6 times [2025-01-09 04:07:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519172606] [2025-01-09 04:07:16,325 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:16,333 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 352 statements into 23 equivalence classes. [2025-01-09 04:07:16,359 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 166 of 352 statements. [2025-01-09 04:07:16,359 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:07:16,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 434 proven. 46 refuted. 0 times theorem prover too weak. 3049 trivial. 0 not checked. [2025-01-09 04:07:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519172606] [2025-01-09 04:07:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519172606] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341532837] [2025-01-09 04:07:16,448 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:16,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:16,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:16,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 04:07:16,543 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 352 statements into 23 equivalence classes. [2025-01-09 04:07:16,578 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 166 of 352 statements. [2025-01-09 04:07:16,578 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:07:16,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:16,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:07:16,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 1097 proven. 7 refuted. 0 times theorem prover too weak. 2425 trivial. 0 not checked. [2025-01-09 04:07:16,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 519 proven. 57 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2025-01-09 04:07:17,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341532837] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:17,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:17,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2025-01-09 04:07:17,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511965623] [2025-01-09 04:07:17,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:17,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 04:07:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:17,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 04:07:17,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:07:17,335 INFO L87 Difference]: Start difference. First operand 139 states and 203 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2025-01-09 04:07:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:17,561 INFO L93 Difference]: Finished difference Result 267 states and 431 transitions. [2025-01-09 04:07:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 04:07:17,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) Word has length 352 [2025-01-09 04:07:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:17,565 INFO L225 Difference]: With dead ends: 267 [2025-01-09 04:07:17,569 INFO L226 Difference]: Without dead ends: 134 [2025-01-09 04:07:17,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 694 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2025-01-09 04:07:17,571 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:17,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 155 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-01-09 04:07:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2025-01-09 04:07:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 88 states have internal predecessors, (104), 22 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (61), 24 states have call predecessors, (61), 22 states have call successors, (61) [2025-01-09 04:07:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2025-01-09 04:07:17,587 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 187 transitions. Word has length 352 [2025-01-09 04:07:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:17,587 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 187 transitions. [2025-01-09 04:07:17,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2025-01-09 04:07:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 187 transitions. [2025-01-09 04:07:17,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2025-01-09 04:07:17,593 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:17,593 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 26, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 10, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:17,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 04:07:17,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:17,794 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:17,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash -950356341, now seen corresponding path program 7 times [2025-01-09 04:07:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137435275] [2025-01-09 04:07:17,796 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:07:17,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:17,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 459 statements into 1 equivalence classes. [2025-01-09 04:07:17,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 459 of 459 statements. [2025-01-09 04:07:17,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:17,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 212 proven. 782 refuted. 0 times theorem prover too weak. 5062 trivial. 0 not checked. [2025-01-09 04:07:18,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137435275] [2025-01-09 04:07:18,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137435275] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114043113] [2025-01-09 04:07:18,203 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:07:18,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:18,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:18,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:18,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 04:07:18,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 459 statements into 1 equivalence classes. [2025-01-09 04:07:18,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 459 of 459 statements. [2025-01-09 04:07:18,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:18,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:18,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:18,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 212 proven. 782 refuted. 0 times theorem prover too weak. 5062 trivial. 0 not checked. [2025-01-09 04:07:18,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 212 proven. 798 refuted. 0 times theorem prover too weak. 5046 trivial. 0 not checked. [2025-01-09 04:07:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114043113] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:19,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:19,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2025-01-09 04:07:19,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359510237] [2025-01-09 04:07:19,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:19,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:19,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:19,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:19,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:19,866 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2025-01-09 04:07:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:19,994 INFO L93 Difference]: Finished difference Result 156 states and 244 transitions. [2025-01-09 04:07:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:19,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 459 [2025-01-09 04:07:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:19,997 INFO L225 Difference]: With dead ends: 156 [2025-01-09 04:07:19,997 INFO L226 Difference]: Without dead ends: 152 [2025-01-09 04:07:19,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 909 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:07:19,998 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:19,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 169 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-01-09 04:07:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2025-01-09 04:07:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 97 states have internal predecessors, (113), 25 states have call successors, (25), 16 states have call predecessors, (25), 19 states have return successors, (85), 30 states have call predecessors, (85), 25 states have call successors, (85) [2025-01-09 04:07:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 223 transitions. [2025-01-09 04:07:20,009 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 223 transitions. Word has length 459 [2025-01-09 04:07:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:20,009 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 223 transitions. [2025-01-09 04:07:20,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2025-01-09 04:07:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 223 transitions. [2025-01-09 04:07:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2025-01-09 04:07:20,011 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:20,012 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 31, 30, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 12, 12, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:20,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:20,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:20,212 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:20,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 849245375, now seen corresponding path program 8 times [2025-01-09 04:07:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:20,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255662171] [2025-01-09 04:07:20,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:20,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:20,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 515 statements into 2 equivalence classes. [2025-01-09 04:07:20,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 515 of 515 statements. [2025-01-09 04:07:20,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:20,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 259 proven. 681 refuted. 0 times theorem prover too weak. 6732 trivial. 0 not checked. [2025-01-09 04:07:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255662171] [2025-01-09 04:07:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255662171] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82532489] [2025-01-09 04:07:20,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:20,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:20,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 04:07:20,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 515 statements into 2 equivalence classes. [2025-01-09 04:07:20,848 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 515 of 515 statements. [2025-01-09 04:07:20,848 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:20,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:20,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:20,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 286 proven. 844 refuted. 0 times theorem prover too weak. 6542 trivial. 0 not checked. [2025-01-09 04:07:20,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 288 proven. 858 refuted. 0 times theorem prover too weak. 6526 trivial. 0 not checked. [2025-01-09 04:07:22,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82532489] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:22,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:22,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2025-01-09 04:07:22,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816682630] [2025-01-09 04:07:22,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:22,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:07:22,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:22,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:07:22,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:07:22,659 INFO L87 Difference]: Start difference. First operand 144 states and 223 transitions. Second operand has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:07:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:22,789 INFO L93 Difference]: Finished difference Result 182 states and 326 transitions. [2025-01-09 04:07:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:07:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 515 [2025-01-09 04:07:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:22,792 INFO L225 Difference]: With dead ends: 182 [2025-01-09 04:07:22,792 INFO L226 Difference]: Without dead ends: 178 [2025-01-09 04:07:22,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1018 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:07:22,793 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:22,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 172 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-01-09 04:07:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 149. [2025-01-09 04:07:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 100 states have internal predecessors, (116), 26 states have call successors, (26), 16 states have call predecessors, (26), 20 states have return successors, (96), 32 states have call predecessors, (96), 26 states have call successors, (96) [2025-01-09 04:07:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 238 transitions. [2025-01-09 04:07:22,806 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 238 transitions. Word has length 515 [2025-01-09 04:07:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:22,807 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 238 transitions. [2025-01-09 04:07:22,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:07:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 238 transitions. [2025-01-09 04:07:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2025-01-09 04:07:22,809 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:22,809 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:22,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:23,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 04:07:23,013 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:23,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1027452653, now seen corresponding path program 9 times [2025-01-09 04:07:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:23,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538389330] [2025-01-09 04:07:23,014 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:23,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:23,024 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 460 statements into 32 equivalence classes. [2025-01-09 04:07:23,039 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 181 of 460 statements. [2025-01-09 04:07:23,039 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 04:07:23,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 865 proven. 150 refuted. 0 times theorem prover too weak. 5067 trivial. 0 not checked. [2025-01-09 04:07:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538389330] [2025-01-09 04:07:23,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538389330] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664422066] [2025-01-09 04:07:23,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:23,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:23,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:23,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 04:07:23,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 460 statements into 32 equivalence classes. [2025-01-09 04:07:23,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 181 of 460 statements. [2025-01-09 04:07:23,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 04:07:23,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:23,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:07:23,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 2436 proven. 34 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2025-01-09 04:07:23,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 967 proven. 183 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2025-01-09 04:07:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664422066] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:24,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 21 [2025-01-09 04:07:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296086792] [2025-01-09 04:07:24,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:24,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 04:07:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:24,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 04:07:24,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:07:24,640 INFO L87 Difference]: Start difference. First operand 149 states and 238 transitions. Second operand has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) [2025-01-09 04:07:24,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:24,817 INFO L93 Difference]: Finished difference Result 288 states and 510 transitions. [2025-01-09 04:07:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 04:07:24,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) Word has length 460 [2025-01-09 04:07:24,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:24,819 INFO L225 Difference]: With dead ends: 288 [2025-01-09 04:07:24,819 INFO L226 Difference]: Without dead ends: 146 [2025-01-09 04:07:24,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 906 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2025-01-09 04:07:24,821 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:24,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-09 04:07:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2025-01-09 04:07:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.1) internal successors, (110), 96 states have internal predecessors, (110), 24 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (73), 28 states have call predecessors, (73), 24 states have call successors, (73) [2025-01-09 04:07:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 207 transitions. [2025-01-09 04:07:24,833 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 207 transitions. Word has length 460 [2025-01-09 04:07:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:24,834 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 207 transitions. [2025-01-09 04:07:24,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) [2025-01-09 04:07:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 207 transitions. [2025-01-09 04:07:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2025-01-09 04:07:24,836 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:24,836 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 30, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 7, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:24,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:25,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 04:07:25,037 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:25,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 546839361, now seen corresponding path program 10 times [2025-01-09 04:07:25,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:25,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079116567] [2025-01-09 04:07:25,038 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:25,045 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 433 statements into 2 equivalence classes. [2025-01-09 04:07:25,061 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 368 of 433 statements. [2025-01-09 04:07:25,061 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:25,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 624 proven. 159 refuted. 0 times theorem prover too weak. 4594 trivial. 0 not checked. [2025-01-09 04:07:25,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079116567] [2025-01-09 04:07:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079116567] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682784838] [2025-01-09 04:07:25,226 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:25,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:25,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:25,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 04:07:25,367 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 433 statements into 2 equivalence classes. [2025-01-09 04:07:25,418 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 368 of 433 statements. [2025-01-09 04:07:25,418 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:25,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:25,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:07:25,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 636 proven. 582 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2025-01-09 04:07:25,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 636 proven. 612 refuted. 0 times theorem prover too weak. 4129 trivial. 0 not checked. [2025-01-09 04:07:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682784838] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:27,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:27,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 19] total 29 [2025-01-09 04:07:27,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753588691] [2025-01-09 04:07:27,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:27,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:07:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:27,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:07:27,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:07:27,885 INFO L87 Difference]: Start difference. First operand 143 states and 207 transitions. Second operand has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) [2025-01-09 04:07:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:28,666 INFO L93 Difference]: Finished difference Result 378 states and 726 transitions. [2025-01-09 04:07:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 04:07:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) Word has length 433 [2025-01-09 04:07:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:28,669 INFO L225 Difference]: With dead ends: 378 [2025-01-09 04:07:28,669 INFO L226 Difference]: Without dead ends: 210 [2025-01-09 04:07:28,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 841 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=438, Invalid=2642, Unknown=0, NotChecked=0, Total=3080 [2025-01-09 04:07:28,672 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 85 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:28,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 645 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:07:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-01-09 04:07:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2025-01-09 04:07:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 133 states have (on average 1.0902255639097744) internal successors, (145), 128 states have internal predecessors, (145), 35 states have call successors, (35), 26 states have call predecessors, (35), 21 states have return successors, (110), 35 states have call predecessors, (110), 35 states have call successors, (110) [2025-01-09 04:07:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 290 transitions. [2025-01-09 04:07:28,685 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 290 transitions. Word has length 433 [2025-01-09 04:07:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:28,686 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 290 transitions. [2025-01-09 04:07:28,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) [2025-01-09 04:07:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 290 transitions. [2025-01-09 04:07:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2025-01-09 04:07:28,688 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:28,689 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 35, 35, 30, 28, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 9, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:28,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 04:07:28,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 04:07:28,890 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:28,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash -798019552, now seen corresponding path program 11 times [2025-01-09 04:07:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:28,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407394502] [2025-01-09 04:07:28,890 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:28,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:28,900 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 500 statements into 32 equivalence classes. [2025-01-09 04:07:28,926 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) and asserted 284 of 500 statements. [2025-01-09 04:07:28,926 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2025-01-09 04:07:28,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7233 backedges. 702 proven. 689 refuted. 0 times theorem prover too weak. 5842 trivial. 0 not checked. [2025-01-09 04:07:29,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407394502] [2025-01-09 04:07:29,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407394502] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354726026] [2025-01-09 04:07:29,114 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:29,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:29,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:29,118 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:29,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 04:07:29,251 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 500 statements into 32 equivalence classes. [2025-01-09 04:07:29,302 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) and asserted 284 of 500 statements. [2025-01-09 04:07:29,303 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2025-01-09 04:07:29,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:29,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:07:29,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7233 backedges. 4124 proven. 96 refuted. 0 times theorem prover too weak. 3013 trivial. 0 not checked. [2025-01-09 04:07:29,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7233 backedges. 705 proven. 645 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2025-01-09 04:07:30,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354726026] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:30,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:30,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 24 [2025-01-09 04:07:30,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049818116] [2025-01-09 04:07:30,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:30,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 04:07:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:30,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 04:07:30,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-01-09 04:07:30,794 INFO L87 Difference]: Start difference. First operand 190 states and 290 transitions. Second operand has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 16 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) [2025-01-09 04:07:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:31,094 INFO L93 Difference]: Finished difference Result 376 states and 607 transitions. [2025-01-09 04:07:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 04:07:31,094 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 16 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) Word has length 500 [2025-01-09 04:07:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:31,096 INFO L225 Difference]: With dead ends: 376 [2025-01-09 04:07:31,096 INFO L226 Difference]: Without dead ends: 201 [2025-01-09 04:07:31,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 986 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 04:07:31,098 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 73 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:31,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 169 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-01-09 04:07:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 190. [2025-01-09 04:07:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 133 states have (on average 1.0902255639097744) internal successors, (145), 128 states have internal predecessors, (145), 35 states have call successors, (35), 26 states have call predecessors, (35), 21 states have return successors, (108), 35 states have call predecessors, (108), 35 states have call successors, (108) [2025-01-09 04:07:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 288 transitions. [2025-01-09 04:07:31,109 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 288 transitions. Word has length 500 [2025-01-09 04:07:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:31,109 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 288 transitions. [2025-01-09 04:07:31,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.0) internal successors, (96), 24 states have internal predecessors, (96), 16 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (34), 13 states have call predecessors, (34), 16 states have call successors, (34) [2025-01-09 04:07:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 288 transitions. [2025-01-09 04:07:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-01-09 04:07:31,111 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:31,111 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 22, 21, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 9, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:31,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 04:07:31,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:31,312 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:31,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1561173555, now seen corresponding path program 12 times [2025-01-09 04:07:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:31,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480653907] [2025-01-09 04:07:31,313 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:31,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:31,321 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 377 statements into 24 equivalence classes. [2025-01-09 04:07:31,370 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 214 of 377 statements. [2025-01-09 04:07:31,371 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-09 04:07:31,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 585 proven. 90 refuted. 0 times theorem prover too weak. 3358 trivial. 0 not checked. [2025-01-09 04:07:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480653907] [2025-01-09 04:07:31,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480653907] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140700768] [2025-01-09 04:07:31,482 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:31,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:31,486 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:31,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 04:07:31,622 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 377 statements into 24 equivalence classes. [2025-01-09 04:07:31,663 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 214 of 377 statements. [2025-01-09 04:07:31,663 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-09 04:07:31,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:31,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:07:31,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 1587 proven. 17 refuted. 0 times theorem prover too weak. 2429 trivial. 0 not checked. [2025-01-09 04:07:31,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 665 proven. 105 refuted. 0 times theorem prover too weak. 3263 trivial. 0 not checked. [2025-01-09 04:07:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140700768] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:32,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-01-09 04:07:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555439642] [2025-01-09 04:07:32,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 04:07:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:32,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 04:07:32,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-01-09 04:07:32,587 INFO L87 Difference]: Start difference. First operand 190 states and 288 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2025-01-09 04:07:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:32,744 INFO L93 Difference]: Finished difference Result 355 states and 554 transitions. [2025-01-09 04:07:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:07:32,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) Word has length 377 [2025-01-09 04:07:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:32,746 INFO L225 Difference]: With dead ends: 355 [2025-01-09 04:07:32,746 INFO L226 Difference]: Without dead ends: 175 [2025-01-09 04:07:32,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 741 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:07:32,748 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:32,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 159 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-01-09 04:07:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2025-01-09 04:07:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 118 states have (on average 1.0932203389830508) internal successors, (129), 114 states have internal predecessors, (129), 31 states have call successors, (31), 25 states have call predecessors, (31), 17 states have return successors, (72), 27 states have call predecessors, (72), 31 states have call successors, (72) [2025-01-09 04:07:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 232 transitions. [2025-01-09 04:07:32,762 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 232 transitions. Word has length 377 [2025-01-09 04:07:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:32,763 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 232 transitions. [2025-01-09 04:07:32,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2025-01-09 04:07:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 232 transitions. [2025-01-09 04:07:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2025-01-09 04:07:32,765 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:32,765 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 30, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 11, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:32,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:32,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:32,966 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:32,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1005758370, now seen corresponding path program 13 times [2025-01-09 04:07:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745739664] [2025-01-09 04:07:32,967 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:07:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:33,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 501 statements into 1 equivalence classes. [2025-01-09 04:07:33,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 501 of 501 statements. [2025-01-09 04:07:33,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:33,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 594 proven. 131 refuted. 0 times theorem prover too weak. 6524 trivial. 0 not checked. [2025-01-09 04:07:33,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:33,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745739664] [2025-01-09 04:07:33,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745739664] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:33,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632582978] [2025-01-09 04:07:33,193 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:07:33,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:33,198 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:33,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 04:07:33,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 501 statements into 1 equivalence classes. [2025-01-09 04:07:33,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 501 of 501 statements. [2025-01-09 04:07:33,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:07:33,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:33,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:07:33,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1013 proven. 429 refuted. 0 times theorem prover too weak. 5807 trivial. 0 not checked. [2025-01-09 04:07:33,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1013 proven. 459 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2025-01-09 04:07:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632582978] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:36,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:36,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 19] total 28 [2025-01-09 04:07:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48030122] [2025-01-09 04:07:36,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:36,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:07:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:36,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:07:36,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:07:36,861 INFO L87 Difference]: Start difference. First operand 167 states and 232 transitions. Second operand has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2025-01-09 04:07:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:37,627 INFO L93 Difference]: Finished difference Result 395 states and 610 transitions. [2025-01-09 04:07:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 04:07:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) Word has length 501 [2025-01-09 04:07:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:37,630 INFO L225 Difference]: With dead ends: 395 [2025-01-09 04:07:37,631 INFO L226 Difference]: Without dead ends: 242 [2025-01-09 04:07:37,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 976 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=435, Invalid=2645, Unknown=0, NotChecked=0, Total=3080 [2025-01-09 04:07:37,633 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 78 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:37,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 619 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:07:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-01-09 04:07:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 197. [2025-01-09 04:07:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.079136690647482) internal successors, (150), 135 states have internal predecessors, (150), 40 states have call successors, (40), 31 states have call predecessors, (40), 17 states have return successors, (87), 30 states have call predecessors, (87), 40 states have call successors, (87) [2025-01-09 04:07:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 277 transitions. [2025-01-09 04:07:37,644 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 277 transitions. Word has length 501 [2025-01-09 04:07:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:37,645 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 277 transitions. [2025-01-09 04:07:37,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2025-01-09 04:07:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 277 transitions. [2025-01-09 04:07:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2025-01-09 04:07:37,647 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:37,647 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:37,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 04:07:37,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:37,852 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:37,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1402769443, now seen corresponding path program 14 times [2025-01-09 04:07:37,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:37,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038312825] [2025-01-09 04:07:37,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:37,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 460 statements into 2 equivalence classes. [2025-01-09 04:07:37,913 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 460 of 460 statements. [2025-01-09 04:07:37,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:37,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2025-01-09 04:07:41,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:41,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038312825] [2025-01-09 04:07:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038312825] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:41,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976145452] [2025-01-09 04:07:41,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:07:41,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:41,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:41,618 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:41,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 04:07:41,838 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 460 statements into 2 equivalence classes. [2025-01-09 04:07:41,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 460 of 460 statements. [2025-01-09 04:07:41,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:07:41,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:41,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 271 conjuncts are in the unsatisfiable core [2025-01-09 04:07:41,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2025-01-09 04:07:42,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2025-01-09 04:07:44,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976145452] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:44,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:44,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2025-01-09 04:07:44,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265584610] [2025-01-09 04:07:44,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:44,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-09 04:07:44,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:44,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-09 04:07:44,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 04:07:44,411 INFO L87 Difference]: Start difference. First operand 197 states and 277 transitions. Second operand has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2025-01-09 04:07:44,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:44,959 INFO L93 Difference]: Finished difference Result 217 states and 312 transitions. [2025-01-09 04:07:44,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 04:07:44,959 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) Word has length 460 [2025-01-09 04:07:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:44,962 INFO L225 Difference]: With dead ends: 217 [2025-01-09 04:07:44,962 INFO L226 Difference]: Without dead ends: 213 [2025-01-09 04:07:44,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1005 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 04:07:44,964 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:44,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2856 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:07:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-01-09 04:07:44,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2025-01-09 04:07:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 145 states have (on average 1.0758620689655172) internal successors, (156), 141 states have internal predecessors, (156), 42 states have call successors, (42), 31 states have call predecessors, (42), 19 states have return successors, (101), 34 states have call predecessors, (101), 42 states have call successors, (101) [2025-01-09 04:07:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2025-01-09 04:07:44,983 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 460 [2025-01-09 04:07:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:44,983 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2025-01-09 04:07:44,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2025-01-09 04:07:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2025-01-09 04:07:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2025-01-09 04:07:44,986 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:44,986 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:44,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 04:07:45,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:45,191 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:45,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2132859978, now seen corresponding path program 15 times [2025-01-09 04:07:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132313155] [2025-01-09 04:07:45,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:45,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 419 statements into 27 equivalence classes. [2025-01-09 04:07:45,229 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 270 of 419 statements. [2025-01-09 04:07:45,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 04:07:45,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 352 proven. 383 refuted. 0 times theorem prover too weak. 4281 trivial. 0 not checked. [2025-01-09 04:07:45,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:45,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132313155] [2025-01-09 04:07:45,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132313155] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:45,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222578520] [2025-01-09 04:07:45,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:07:45,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:45,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:45,457 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:45,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 04:07:45,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 419 statements into 27 equivalence classes. [2025-01-09 04:07:45,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 270 of 419 statements. [2025-01-09 04:07:45,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 04:07:45,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:45,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:07:45,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 356 proven. 396 refuted. 0 times theorem prover too weak. 4264 trivial. 0 not checked. [2025-01-09 04:07:45,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 358 proven. 404 refuted. 0 times theorem prover too weak. 4254 trivial. 0 not checked. [2025-01-09 04:07:46,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222578520] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:46,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:46,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 13] total 18 [2025-01-09 04:07:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649460908] [2025-01-09 04:07:46,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:46,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:07:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:46,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:07:46,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:07:46,815 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2025-01-09 04:07:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:47,013 INFO L93 Difference]: Finished difference Result 493 states and 761 transitions. [2025-01-09 04:07:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 04:07:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) Word has length 419 [2025-01-09 04:07:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:47,016 INFO L225 Difference]: With dead ends: 493 [2025-01-09 04:07:47,016 INFO L226 Difference]: Without dead ends: 279 [2025-01-09 04:07:47,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 828 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2025-01-09 04:07:47,018 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 56 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:47,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 213 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2025-01-09 04:07:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 248. [2025-01-09 04:07:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 174 states have (on average 1.0747126436781609) internal successors, (187), 169 states have internal predecessors, (187), 52 states have call successors, (52), 38 states have call predecessors, (52), 21 states have return successors, (140), 40 states have call predecessors, (140), 52 states have call successors, (140) [2025-01-09 04:07:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 379 transitions. [2025-01-09 04:07:47,032 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 379 transitions. Word has length 419 [2025-01-09 04:07:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:47,032 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 379 transitions. [2025-01-09 04:07:47,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2025-01-09 04:07:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 379 transitions. [2025-01-09 04:07:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2025-01-09 04:07:47,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:47,035 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 30, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 11, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:47,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:47,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-09 04:07:47,236 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:47,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash -451431134, now seen corresponding path program 16 times [2025-01-09 04:07:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798426042] [2025-01-09 04:07:47,237 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:47,251 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 501 statements into 2 equivalence classes. [2025-01-09 04:07:47,265 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 426 of 501 statements. [2025-01-09 04:07:47,265 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:47,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 393 proven. 763 refuted. 0 times theorem prover too weak. 6093 trivial. 0 not checked. [2025-01-09 04:07:47,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798426042] [2025-01-09 04:07:47,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798426042] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044913556] [2025-01-09 04:07:47,545 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:07:47,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:47,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:47,546 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:47,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 04:07:47,714 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 501 statements into 2 equivalence classes. [2025-01-09 04:07:47,773 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 426 of 501 statements. [2025-01-09 04:07:47,774 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:07:47,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:47,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:07:47,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 455 proven. 987 refuted. 0 times theorem prover too weak. 5807 trivial. 0 not checked. [2025-01-09 04:07:47,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 457 proven. 1015 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2025-01-09 04:07:50,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044913556] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:50,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:50,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 25 [2025-01-09 04:07:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80486957] [2025-01-09 04:07:50,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:50,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 04:07:50,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:50,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 04:07:50,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2025-01-09 04:07:50,161 INFO L87 Difference]: Start difference. First operand 248 states and 379 transitions. Second operand has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 04:07:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:50,415 INFO L93 Difference]: Finished difference Result 281 states and 453 transitions. [2025-01-09 04:07:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:07:50,415 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) Word has length 501 [2025-01-09 04:07:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:50,417 INFO L225 Difference]: With dead ends: 281 [2025-01-09 04:07:50,418 INFO L226 Difference]: Without dead ends: 211 [2025-01-09 04:07:50,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 985 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 04:07:50,419 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:50,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 433 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:07:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-09 04:07:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2025-01-09 04:07:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 137 states have internal predecessors, (153), 38 states have call successors, (38), 30 states have call predecessors, (38), 20 states have return successors, (68), 33 states have call predecessors, (68), 38 states have call successors, (68) [2025-01-09 04:07:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 259 transitions. [2025-01-09 04:07:50,431 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 259 transitions. Word has length 501 [2025-01-09 04:07:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:50,431 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 259 transitions. [2025-01-09 04:07:50,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 04:07:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 259 transitions. [2025-01-09 04:07:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2025-01-09 04:07:50,435 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:50,435 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 37, 37, 31, 31, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 13, 11, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:50,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:50,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 04:07:50,636 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:50,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1250435724, now seen corresponding path program 17 times [2025-01-09 04:07:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250744484] [2025-01-09 04:07:50,637 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:50,651 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 528 statements into 36 equivalence classes. [2025-01-09 04:07:50,683 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 355 of 528 statements. [2025-01-09 04:07:50,683 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-09 04:07:50,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 609 proven. 1027 refuted. 0 times theorem prover too weak. 6450 trivial. 0 not checked. [2025-01-09 04:07:50,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:50,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250744484] [2025-01-09 04:07:50,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250744484] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:50,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108086082] [2025-01-09 04:07:50,913 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:07:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:50,914 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:50,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 04:07:51,105 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 528 statements into 36 equivalence classes. [2025-01-09 04:07:51,178 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 355 of 528 statements. [2025-01-09 04:07:51,178 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-09 04:07:51,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:51,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:07:51,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 4517 proven. 174 refuted. 0 times theorem prover too weak. 3395 trivial. 0 not checked. [2025-01-09 04:07:51,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 609 proven. 1035 refuted. 0 times theorem prover too weak. 6442 trivial. 0 not checked. [2025-01-09 04:07:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108086082] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:52,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 17] total 21 [2025-01-09 04:07:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235339953] [2025-01-09 04:07:52,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:52,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 04:07:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:52,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 04:07:52,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:07:52,928 INFO L87 Difference]: Start difference. First operand 201 states and 259 transitions. Second operand has 21 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 states have internal predecessors, (92), 14 states have call successors, (28), 2 states have call predecessors, (28), 9 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2025-01-09 04:07:53,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:53,252 INFO L93 Difference]: Finished difference Result 413 states and 541 transitions. [2025-01-09 04:07:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 04:07:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 states have internal predecessors, (92), 14 states have call successors, (28), 2 states have call predecessors, (28), 9 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) Word has length 528 [2025-01-09 04:07:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:53,255 INFO L225 Difference]: With dead ends: 413 [2025-01-09 04:07:53,255 INFO L226 Difference]: Without dead ends: 168 [2025-01-09 04:07:53,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1044 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 04:07:53,258 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 57 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:53,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 350 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:07:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-01-09 04:07:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2025-01-09 04:07:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 107 states have internal predecessors, (120), 28 states have call successors, (28), 24 states have call predecessors, (28), 16 states have return successors, (33), 24 states have call predecessors, (33), 28 states have call successors, (33) [2025-01-09 04:07:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2025-01-09 04:07:53,272 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 528 [2025-01-09 04:07:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:53,272 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2025-01-09 04:07:53,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 states have internal predecessors, (92), 14 states have call successors, (28), 2 states have call predecessors, (28), 9 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2025-01-09 04:07:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2025-01-09 04:07:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2025-01-09 04:07:53,274 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:07:53,275 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:53,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-09 04:07:53,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-09 04:07:53,476 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:07:53,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:07:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash 42954652, now seen corresponding path program 18 times [2025-01-09 04:07:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:07:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012698514] [2025-01-09 04:07:53,477 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:53,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:07:53,492 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 501 statements into 35 equivalence classes. [2025-01-09 04:07:53,564 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) and asserted 501 of 501 statements. [2025-01-09 04:07:53,569 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2025-01-09 04:07:53,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 407 proven. 882 refuted. 0 times theorem prover too weak. 5972 trivial. 0 not checked. [2025-01-09 04:07:53,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:07:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012698514] [2025-01-09 04:07:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012698514] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:07:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464211136] [2025-01-09 04:07:53,914 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:07:53,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:07:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:07:53,919 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:07:53,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 04:07:54,120 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 501 statements into 35 equivalence classes. [2025-01-09 04:07:54,228 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) and asserted 501 of 501 statements. [2025-01-09 04:07:54,229 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2025-01-09 04:07:54,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:07:54,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:07:54,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:07:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 3322 proven. 63 refuted. 0 times theorem prover too weak. 3876 trivial. 0 not checked. [2025-01-09 04:07:54,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:07:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 407 proven. 883 refuted. 0 times theorem prover too weak. 5971 trivial. 0 not checked. [2025-01-09 04:07:55,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464211136] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:07:55,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:07:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 17 [2025-01-09 04:07:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502996862] [2025-01-09 04:07:55,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:07:55,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:07:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:07:55,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:07:55,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:07:55,500 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 9 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (27), 12 states have call predecessors, (27), 9 states have call successors, (27) [2025-01-09 04:07:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:07:55,648 INFO L93 Difference]: Finished difference Result 253 states and 295 transitions. [2025-01-09 04:07:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 04:07:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 9 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (27), 12 states have call predecessors, (27), 9 states have call successors, (27) Word has length 501 [2025-01-09 04:07:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:07:55,649 INFO L225 Difference]: With dead ends: 253 [2025-01-09 04:07:55,649 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 04:07:55,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 992 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2025-01-09 04:07:55,651 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:07:55,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 219 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:07:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 04:07:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 04:07:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-01-09 04:07:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 04:07:55,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 501 [2025-01-09 04:07:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:07:55,654 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 04:07:55,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 9 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (27), 12 states have call predecessors, (27), 9 states have call successors, (27) [2025-01-09 04:07:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 04:07:55,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 04:07:55,656 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 04:07:55,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 04:07:55,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 04:07:55,864 INFO L422 BasicCegarLoop]: Path program histogram: [18, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 04:07:55,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 04:08:15,938 WARN L286 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 138 DAG size of output: 75 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2025-01-09 04:08:22,139 WARN L286 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 140 DAG size of output: 76 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)