./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound5.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 6d5e17137385d2c739b29ac6cf64f361b14ea270b178312078ae738d7ba164ca --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:41:26,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:41:26,709 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:41:26,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:41:26,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:41:26,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:41:26,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:41:26,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:41:26,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:41:26,737 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:41:26,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:41:26,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:41:26,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:41:26,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:41:26,738 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:41:26,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:41:26,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:41:26,738 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:41:26,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:41:26,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:41:26,739 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:41:26,740 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:41:26,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:41:26,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:41:26,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:41:26,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:41:26,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:41:26,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:41:26,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:41:26,742 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 -> 6d5e17137385d2c739b29ac6cf64f361b14ea270b178312078ae738d7ba164ca [2025-02-07 20:41:27,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:41:27,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:41:27,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:41:27,029 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:41:27,029 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:41:27,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound5.c [2025-02-07 20:41:28,288 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7df30e433/35402ac1104d415095b4dcc18a1de991/FLAG716591d35 [2025-02-07 20:41:28,540 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:41:28,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound5.c [2025-02-07 20:41:28,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7df30e433/35402ac1104d415095b4dcc18a1de991/FLAG716591d35 [2025-02-07 20:41:28,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7df30e433/35402ac1104d415095b4dcc18a1de991 [2025-02-07 20:41:28,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:41:28,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:41:28,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:41:28,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:41:28,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:41:28,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c9112d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28, skipping insertion in model container [2025-02-07 20:41:28,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,585 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:41:28,716 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/nla-digbench-scaling/geo2-ll_unwindbound5.c[525,538] [2025-02-07 20:41:28,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:41:28,741 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:41:28,750 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/nla-digbench-scaling/geo2-ll_unwindbound5.c[525,538] [2025-02-07 20:41:28,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:41:28,770 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:41:28,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28 WrapperNode [2025-02-07 20:41:28,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:41:28,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:41:28,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:41:28,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:41:28,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,796 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2025-02-07 20:41:28,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:41:28,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:41:28,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:41:28,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:41:28,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,817 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]. [2025-02-07 20:41:28,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,823 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:41:28,831 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:41:28,831 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:41:28,831 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:41:28,832 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (1/1) ... [2025-02-07 20:41:28,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:41:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:41:28,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 20:41:28,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 20:41:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:41:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:41:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:41:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:41:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:41:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:41:28,933 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:41:28,935 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:41:29,055 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-07 20:41:29,055 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:41:29,064 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:41:29,064 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:41:29,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:41:29 BoogieIcfgContainer [2025-02-07 20:41:29,065 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:41:29,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:41:29,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:41:29,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:41:29,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:41:28" (1/3) ... [2025-02-07 20:41:29,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e690123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:41:29, skipping insertion in model container [2025-02-07 20:41:29,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:41:28" (2/3) ... [2025-02-07 20:41:29,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e690123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:41:29, skipping insertion in model container [2025-02-07 20:41:29,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:41:29" (3/3) ... [2025-02-07 20:41:29,075 INFO L128 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound5.c [2025-02-07 20:41:29,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:41:29,093 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG geo2-ll_unwindbound5.c that has 2 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 20:41:29,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:41:29,146 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;@3b46c9da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:41:29,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:41:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:41:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-07 20:41:29,154 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:41:29,155 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-07 20:41:29,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:41:29,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:41:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1212242397, now seen corresponding path program 1 times [2025-02-07 20:41:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:41:29,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057974289] [2025-02-07 20:41:29,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:41:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:41:29,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-07 20:41:29,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-07 20:41:29,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:41:29,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:41:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:41:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:41:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057974289] [2025-02-07 20:41:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057974289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:41:29,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:41:29,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 20:41:29,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710270696] [2025-02-07 20:41:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:41:29,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 20:41:29,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:41:29,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 20:41:29,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:41:29,311 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:41:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:41:29,325 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2025-02-07 20:41:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 20:41:29,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-07 20:41:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:41:29,331 INFO L225 Difference]: With dead ends: 29 [2025-02-07 20:41:29,331 INFO L226 Difference]: Without dead ends: 12 [2025-02-07 20:41:29,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:41:29,336 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:41:29,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:41:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-02-07 20:41:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-02-07 20:41:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 20:41:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-02-07 20:41:29,365 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2025-02-07 20:41:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:41:29,365 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-02-07 20:41:29,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:41:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-02-07 20:41:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 20:41:29,368 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:41:29,369 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:41:29,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 20:41:29,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:41:29,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:41:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1114781629, now seen corresponding path program 1 times [2025-02-07 20:41:29,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:41:29,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193029245] [2025-02-07 20:41:29,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:41:29,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:41:29,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 20:41:29,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 20:41:29,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:41:29,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:41:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133992453] [2025-02-07 20:41:29,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:41:29,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:41:29,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:41:29,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:41:29,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 20:41:29,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 20:41:29,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 20:41:29,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:41:29,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:41:29,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:41:29,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:41:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:41:29,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:41:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:41:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193029245] [2025-02-07 20:41:29,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:41:29,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133992453] [2025-02-07 20:41:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133992453] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:41:29,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:41:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 20:41:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761792825] [2025-02-07 20:41:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:41:29,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:41:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:41:29,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:41:29,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:41:29,579 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:41:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:41:29,627 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2025-02-07 20:41:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:41:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-07 20:41:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:41:29,628 INFO L225 Difference]: With dead ends: 23 [2025-02-07 20:41:29,628 INFO L226 Difference]: Without dead ends: 20 [2025-02-07 20:41:29,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:41:29,629 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:41:29,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:41:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-07 20:41:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-07 20:41:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:41:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-02-07 20:41:29,638 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2025-02-07 20:41:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:41:29,639 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-02-07 20:41:29,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:41:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-02-07 20:41:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-07 20:41:29,640 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:41:29,640 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:41:29,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 20:41:29,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:41:29,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:41:29,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:41:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1881871726, now seen corresponding path program 1 times [2025-02-07 20:41:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:41:29,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411734447] [2025-02-07 20:41:29,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:41:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:41:29,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-07 20:41:29,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-07 20:41:29,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:41:29,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:41:29,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480325749] [2025-02-07 20:41:29,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:41:29,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:41:29,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:41:29,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:41:29,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 20:41:29,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-07 20:41:29,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-07 20:41:29,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:41:29,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:41:29,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-07 20:41:29,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:41:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:41:30,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:41:46,417 WARN L873 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0)))) is different from true [2025-02-07 20:41:46,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:41:46,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411734447] [2025-02-07 20:41:46,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:41:46,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480325749] [2025-02-07 20:41:46,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480325749] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:41:46,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:41:46,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2025-02-07 20:41:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164232229] [2025-02-07 20:41:46,420 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 20:41:46,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:41:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:41:46,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:41:46,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=85, Unknown=2, NotChecked=18, Total=132 [2025-02-07 20:41:46,422 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 20:41:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:41:46,518 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2025-02-07 20:41:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:41:46,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-02-07 20:41:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:41:46,519 INFO L225 Difference]: With dead ends: 31 [2025-02-07 20:41:46,520 INFO L226 Difference]: Without dead ends: 28 [2025-02-07 20:41:46,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=34, Invalid=100, Unknown=2, NotChecked=20, Total=156 [2025-02-07 20:41:46,521 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:41:46,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:41:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-07 20:41:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-02-07 20:41:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 20:41:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2025-02-07 20:41:46,532 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2025-02-07 20:41:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:41:46,532 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2025-02-07 20:41:46,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 20:41:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2025-02-07 20:41:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 20:41:46,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:41:46,533 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2025-02-07 20:41:46,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 20:41:46,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:41:46,737 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:41:46,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:41:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1297479783, now seen corresponding path program 2 times [2025-02-07 20:41:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:41:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387070344] [2025-02-07 20:41:46,738 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:41:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:41:46,747 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-07 20:41:46,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:41:46,794 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:41:46,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:41:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334437251] [2025-02-07 20:41:46,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:41:46,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:41:46,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:41:46,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:41:46,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 20:41:46,837 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-07 20:41:46,927 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:41:46,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:41:46,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:41:46,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-07 20:41:46,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:41:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:41:47,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:42:07,429 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 0))) is different from true [2025-02-07 20:42:37,952 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)))) is different from false [2025-02-07 20:42:41,955 WARN L873 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)))) is different from true [2025-02-07 20:42:50,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:42:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387070344] [2025-02-07 20:42:50,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:42:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334437251] [2025-02-07 20:42:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334437251] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:42:50,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:42:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-02-07 20:42:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789779853] [2025-02-07 20:42:50,083 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 20:42:50,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 20:42:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:42:50,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 20:42:50,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=121, Unknown=5, NotChecked=46, Total=210 [2025-02-07 20:42:50,085 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:42:50,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:42:50,214 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2025-02-07 20:42:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 20:42:50,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-07 20:42:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:42:50,215 INFO L225 Difference]: With dead ends: 39 [2025-02-07 20:42:50,216 INFO L226 Difference]: Without dead ends: 36 [2025-02-07 20:42:50,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=46, Invalid=139, Unknown=5, NotChecked=50, Total=240 [2025-02-07 20:42:50,217 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:42:50,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 88 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:42:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-07 20:42:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-07 20:42:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:42:50,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2025-02-07 20:42:50,229 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 23 [2025-02-07 20:42:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:42:50,230 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2025-02-07 20:42:50,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:42:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2025-02-07 20:42:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-07 20:42:50,231 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:42:50,232 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-07 20:42:50,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 20:42:50,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:42:50,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:42:50,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:42:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 798334660, now seen corresponding path program 3 times [2025-02-07 20:42:50,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:42:50,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649562708] [2025-02-07 20:42:50,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:42:50,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:42:50,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-02-07 20:42:50,469 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-02-07 20:42:50,470 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:42:50,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:42:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380072823] [2025-02-07 20:42:50,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:42:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:42:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:42:50,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:42:50,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 20:42:50,505 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes.