./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 32b030e5f1b46150870f8dd8e24821389f0ffe4175e43053767dc9109bffcf9b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:54:05,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:54:05,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:54:05,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:54:05,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:54:05,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:54:05,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:54:05,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:54:05,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:54:05,761 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:54:05,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:54:05,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:54:05,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:54:05,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:54:05,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:54:05,763 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:54:05,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:54:05,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:54:05,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:54:05,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:54:05,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:54:05,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:54:05,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:54:05,765 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/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 -> 32b030e5f1b46150870f8dd8e24821389f0ffe4175e43053767dc9109bffcf9b [2025-03-08 05:54:06,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:54:06,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:54:06,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:54:06,036 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:54:06,036 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:54:06,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2025-03-08 05:54:07,205 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b9873593/4acf4432f74f4ccba9d122bb849994ee/FLAG86b8f44a4 [2025-03-08 05:54:07,492 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:54:07,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.c [2025-03-08 05:54:07,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b9873593/4acf4432f74f4ccba9d122bb849994ee/FLAG86b8f44a4 [2025-03-08 05:54:07,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b9873593/4acf4432f74f4ccba9d122bb849994ee [2025-03-08 05:54:07,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:54:07,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:54:07,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:54:07,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:54:07,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:54:07,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1298cda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07, skipping insertion in model container [2025-03-08 05:54:07,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:54:07,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.c[671,684] [2025-03-08 05:54:07,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:54:07,785 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:54:07,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-2.c[671,684] [2025-03-08 05:54:07,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:54:07,846 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:54:07,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07 WrapperNode [2025-03-08 05:54:07,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:54:07,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:54:07,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:54:07,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:54:07,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,879 INFO L138 Inliner]: procedures = 42, calls = 53, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 555 [2025-03-08 05:54:07,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:54:07,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:54:07,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:54:07,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:54:07,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,905 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]. [2025-03-08 05:54:07,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:54:07,930 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:54:07,930 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:54:07,930 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:54:07,931 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (1/1) ... [2025-03-08 05:54:07,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:54:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:54:07,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 05:54:07,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 05:54:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:54:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-08 05:54:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-08 05:54:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 05:54:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 05:54:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 05:54:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 05:54:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 05:54:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 05:54:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 05:54:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 05:54:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 05:54:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 05:54:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:54:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 05:54:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 05:54:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:54:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:54:08,074 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:54:08,077 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:54:08,617 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2025-03-08 05:54:08,617 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:54:08,631 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:54:08,633 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:54:08,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:54:08 BoogieIcfgContainer [2025-03-08 05:54:08,634 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:54:08,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:54:08,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:54:08,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:54:08,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:54:07" (1/3) ... [2025-03-08 05:54:08,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d23a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:54:08, skipping insertion in model container [2025-03-08 05:54:08,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:54:07" (2/3) ... [2025-03-08 05:54:08,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d23a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:54:08, skipping insertion in model container [2025-03-08 05:54:08,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:54:08" (3/3) ... [2025-03-08 05:54:08,643 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-2.c [2025-03-08 05:54:08,654 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:54:08,655 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.07.cil-2.c that has 8 procedures, 263 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-03-08 05:54:08,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:54:08,718 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;@3b8a22fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:54:08,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:54:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 232 states have (on average 1.603448275862069) internal successors, (372), 235 states have internal predecessors, (372), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 05:54:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:08,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:08,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:08,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:08,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash -213612266, now seen corresponding path program 1 times [2025-03-08 05:54:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496200865] [2025-03-08 05:54:08,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:08,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:08,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:08,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:08,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:09,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496200865] [2025-03-08 05:54:09,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496200865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:09,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:54:09,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369938071] [2025-03-08 05:54:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:09,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:54:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:09,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:54:09,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:54:09,198 INFO L87 Difference]: Start difference. First operand has 263 states, 232 states have (on average 1.603448275862069) internal successors, (372), 235 states have internal predecessors, (372), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:09,738 INFO L93 Difference]: Finished difference Result 783 states and 1260 transitions. [2025-03-08 05:54:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:54:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:09,754 INFO L225 Difference]: With dead ends: 783 [2025-03-08 05:54:09,755 INFO L226 Difference]: Without dead ends: 527 [2025-03-08 05:54:09,759 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 [2025-03-08 05:54:09,763 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 743 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:09,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1122 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:54:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-08 05:54:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 506. [2025-03-08 05:54:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 453 states have (on average 1.5783664459161149) internal successors, (715), 456 states have internal predecessors, (715), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2025-03-08 05:54:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 792 transitions. [2025-03-08 05:54:09,843 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 792 transitions. Word has length 121 [2025-03-08 05:54:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:09,844 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 792 transitions. [2025-03-08 05:54:09,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 792 transitions. [2025-03-08 05:54:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:09,848 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:09,848 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:09,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 05:54:09,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:09,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1506526740, now seen corresponding path program 1 times [2025-03-08 05:54:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820050587] [2025-03-08 05:54:09,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:09,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:09,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:09,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:09,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:10,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:10,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820050587] [2025-03-08 05:54:10,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820050587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:10,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:10,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:10,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926612878] [2025-03-08 05:54:10,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:10,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:10,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:10,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:10,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:10,078 INFO L87 Difference]: Start difference. First operand 506 states and 792 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:10,651 INFO L93 Difference]: Finished difference Result 1314 states and 2077 transitions. [2025-03-08 05:54:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:10,657 INFO L225 Difference]: With dead ends: 1314 [2025-03-08 05:54:10,657 INFO L226 Difference]: Without dead ends: 823 [2025-03-08 05:54:10,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:10,661 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 738 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:10,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 2096 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 05:54:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2025-03-08 05:54:10,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 738. [2025-03-08 05:54:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 662 states have (on average 1.5709969788519638) internal successors, (1040), 666 states have internal predecessors, (1040), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (57), 54 states have call predecessors, (57), 53 states have call successors, (57) [2025-03-08 05:54:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1152 transitions. [2025-03-08 05:54:10,708 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1152 transitions. Word has length 121 [2025-03-08 05:54:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:10,709 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1152 transitions. [2025-03-08 05:54:10,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1152 transitions. [2025-03-08 05:54:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:10,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:10,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:10,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 05:54:10,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:10,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1657653931, now seen corresponding path program 1 times [2025-03-08 05:54:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556979558] [2025-03-08 05:54:10,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:10,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:10,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:10,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:10,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:10,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556979558] [2025-03-08 05:54:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556979558] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:10,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:10,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716751759] [2025-03-08 05:54:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:10,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:10,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:10,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:10,867 INFO L87 Difference]: Start difference. First operand 738 states and 1152 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:11,409 INFO L93 Difference]: Finished difference Result 2050 states and 3236 transitions. [2025-03-08 05:54:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:11,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:11,417 INFO L225 Difference]: With dead ends: 2050 [2025-03-08 05:54:11,418 INFO L226 Difference]: Without dead ends: 1327 [2025-03-08 05:54:11,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:11,420 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 733 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:11,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 2080 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 05:54:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2025-03-08 05:54:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1231. [2025-03-08 05:54:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1107 states have (on average 1.5727190605239385) internal successors, (1741), 1115 states have internal predecessors, (1741), 87 states have call successors, (87), 31 states have call predecessors, (87), 36 states have return successors, (101), 88 states have call predecessors, (101), 85 states have call successors, (101) [2025-03-08 05:54:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1929 transitions. [2025-03-08 05:54:11,482 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1929 transitions. Word has length 121 [2025-03-08 05:54:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:11,483 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1929 transitions. [2025-03-08 05:54:11,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1929 transitions. [2025-03-08 05:54:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:11,486 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:11,486 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:11,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 05:54:11,486 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:11,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1703959028, now seen corresponding path program 1 times [2025-03-08 05:54:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968382473] [2025-03-08 05:54:11,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:11,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:11,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:11,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:11,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968382473] [2025-03-08 05:54:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968382473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197163923] [2025-03-08 05:54:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:11,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:11,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:11,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:11,676 INFO L87 Difference]: Start difference. First operand 1231 states and 1929 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:12,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:12,235 INFO L93 Difference]: Finished difference Result 3633 states and 5779 transitions. [2025-03-08 05:54:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:12,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:12,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:12,251 INFO L225 Difference]: With dead ends: 3633 [2025-03-08 05:54:12,251 INFO L226 Difference]: Without dead ends: 2417 [2025-03-08 05:54:12,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:12,259 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 728 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:12,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 2068 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:54:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2025-03-08 05:54:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2298. [2025-03-08 05:54:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2072 states have (on average 1.5854247104247103) internal successors, (3285), 2094 states have internal predecessors, (3285), 151 states have call successors, (151), 55 states have call predecessors, (151), 74 states have return successors, (213), 156 states have call predecessors, (213), 149 states have call successors, (213) [2025-03-08 05:54:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3649 transitions. [2025-03-08 05:54:12,399 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3649 transitions. Word has length 121 [2025-03-08 05:54:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:12,400 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 3649 transitions. [2025-03-08 05:54:12,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3649 transitions. [2025-03-08 05:54:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:12,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:12,403 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:12,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 05:54:12,403 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:12,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1097095819, now seen corresponding path program 1 times [2025-03-08 05:54:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948238622] [2025-03-08 05:54:12,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:12,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:12,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:12,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:12,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:12,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:12,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:12,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948238622] [2025-03-08 05:54:12,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948238622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:12,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:12,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136725939] [2025-03-08 05:54:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:12,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:12,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:12,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:12,532 INFO L87 Difference]: Start difference. First operand 2298 states and 3649 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:13,156 INFO L93 Difference]: Finished difference Result 7104 states and 11517 transitions. [2025-03-08 05:54:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:13,180 INFO L225 Difference]: With dead ends: 7104 [2025-03-08 05:54:13,180 INFO L226 Difference]: Without dead ends: 4821 [2025-03-08 05:54:13,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:13,190 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 723 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:13,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 2056 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 05:54:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2025-03-08 05:54:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4657. [2025-03-08 05:54:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4209 states have (on average 1.6072701354240913) internal successors, (6765), 4277 states have internal predecessors, (6765), 279 states have call successors, (279), 103 states have call predecessors, (279), 168 states have return successors, (533), 292 states have call predecessors, (533), 277 states have call successors, (533) [2025-03-08 05:54:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 7577 transitions. [2025-03-08 05:54:13,399 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 7577 transitions. Word has length 121 [2025-03-08 05:54:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:13,400 INFO L471 AbstractCegarLoop]: Abstraction has 4657 states and 7577 transitions. [2025-03-08 05:54:13,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 7577 transitions. [2025-03-08 05:54:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:13,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:13,403 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:13,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 05:54:13,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:13,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1999136212, now seen corresponding path program 1 times [2025-03-08 05:54:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:13,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216189800] [2025-03-08 05:54:13,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:13,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:13,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:13,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:13,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:13,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216189800] [2025-03-08 05:54:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216189800] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:13,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884961809] [2025-03-08 05:54:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:13,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:13,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:13,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:13,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:13,528 INFO L87 Difference]: Start difference. First operand 4657 states and 7577 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:14,245 INFO L93 Difference]: Finished difference Result 14887 states and 24927 transitions. [2025-03-08 05:54:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:14,297 INFO L225 Difference]: With dead ends: 14887 [2025-03-08 05:54:14,297 INFO L226 Difference]: Without dead ends: 10245 [2025-03-08 05:54:14,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:14,315 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 718 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:14,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 2044 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:54:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10245 states. [2025-03-08 05:54:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10245 to 9996. [2025-03-08 05:54:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9996 states, 9050 states have (on average 1.6350276243093922) internal successors, (14797), 9264 states have internal predecessors, (14797), 535 states have call successors, (535), 199 states have call predecessors, (535), 410 states have return successors, (1557), 564 states have call predecessors, (1557), 533 states have call successors, (1557) [2025-03-08 05:54:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 16889 transitions. [2025-03-08 05:54:14,711 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 16889 transitions. Word has length 121 [2025-03-08 05:54:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:14,711 INFO L471 AbstractCegarLoop]: Abstraction has 9996 states and 16889 transitions. [2025-03-08 05:54:14,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 16889 transitions. [2025-03-08 05:54:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:14,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:14,719 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:14,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 05:54:14,719 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:14,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1780310635, now seen corresponding path program 1 times [2025-03-08 05:54:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:14,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231312841] [2025-03-08 05:54:14,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:14,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:14,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:14,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:14,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231312841] [2025-03-08 05:54:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231312841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:14,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:14,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610485482] [2025-03-08 05:54:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:14,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:14,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:14,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:14,820 INFO L87 Difference]: Start difference. First operand 9996 states and 16889 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:15,875 INFO L93 Difference]: Finished difference Result 32762 states and 57613 transitions. [2025-03-08 05:54:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:15,998 INFO L225 Difference]: With dead ends: 32762 [2025-03-08 05:54:15,999 INFO L226 Difference]: Without dead ends: 22781 [2025-03-08 05:54:16,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:16,077 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 713 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:16,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 2032 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:54:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22781 states. [2025-03-08 05:54:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22781 to 22375. [2025-03-08 05:54:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22375 states, 20271 states have (on average 1.6654827092891322) internal successors, (33761), 20939 states have internal predecessors, (33761), 1047 states have call successors, (1047), 391 states have call predecessors, (1047), 1056 states have return successors, (5141), 1108 states have call predecessors, (5141), 1045 states have call successors, (5141) [2025-03-08 05:54:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22375 states to 22375 states and 39949 transitions. [2025-03-08 05:54:16,893 INFO L78 Accepts]: Start accepts. Automaton has 22375 states and 39949 transitions. Word has length 121 [2025-03-08 05:54:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:16,893 INFO L471 AbstractCegarLoop]: Abstraction has 22375 states and 39949 transitions. [2025-03-08 05:54:16,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 22375 states and 39949 transitions. [2025-03-08 05:54:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:16,904 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:16,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:16,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 05:54:16,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:16,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1561455028, now seen corresponding path program 1 times [2025-03-08 05:54:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:16,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603307179] [2025-03-08 05:54:16,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:16,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:16,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:16,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:16,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:16,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603307179] [2025-03-08 05:54:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603307179] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757351293] [2025-03-08 05:54:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:16,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:16,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:16,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:16,999 INFO L87 Difference]: Start difference. First operand 22375 states and 39949 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:18,708 INFO L93 Difference]: Finished difference Result 74801 states and 141251 transitions. [2025-03-08 05:54:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:18,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:18,969 INFO L225 Difference]: With dead ends: 74801 [2025-03-08 05:54:18,972 INFO L226 Difference]: Without dead ends: 52441 [2025-03-08 05:54:19,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:19,048 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 708 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:19,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 2020 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:54:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52441 states. [2025-03-08 05:54:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52441 to 51750. [2025-03-08 05:54:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51750 states, 46844 states have (on average 1.6956920843651269) internal successors, (79433), 48906 states have internal predecessors, (79433), 2071 states have call successors, (2071), 775 states have call predecessors, (2071), 2834 states have return successors, (18453), 2196 states have call predecessors, (18453), 2069 states have call successors, (18453) [2025-03-08 05:54:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51750 states to 51750 states and 99957 transitions. [2025-03-08 05:54:21,570 INFO L78 Accepts]: Start accepts. Automaton has 51750 states and 99957 transitions. Word has length 121 [2025-03-08 05:54:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:21,572 INFO L471 AbstractCegarLoop]: Abstraction has 51750 states and 99957 transitions. [2025-03-08 05:54:21,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 51750 states and 99957 transitions. [2025-03-08 05:54:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:21,597 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:21,597 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:21,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 05:54:21,598 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:21,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1932976715, now seen corresponding path program 1 times [2025-03-08 05:54:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:21,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366657456] [2025-03-08 05:54:21,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:21,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:21,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:21,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:21,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366657456] [2025-03-08 05:54:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366657456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:21,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:54:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885939914] [2025-03-08 05:54:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:21,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:54:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:21,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:54:21,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:54:21,725 INFO L87 Difference]: Start difference. First operand 51750 states and 99957 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:25,228 INFO L93 Difference]: Finished difference Result 182740 states and 377714 transitions. [2025-03-08 05:54:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:54:25,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:26,218 INFO L225 Difference]: With dead ends: 182740 [2025-03-08 05:54:26,219 INFO L226 Difference]: Without dead ends: 131005 [2025-03-08 05:54:26,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:54:26,408 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 927 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:26,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 1995 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 05:54:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131005 states. [2025-03-08 05:54:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131005 to 122509. [2025-03-08 05:54:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122509 states, 110669 states have (on average 1.7246835157090061) internal successors, (190869), 116977 states have internal predecessors, (190869), 3991 states have call successors, (3991), 1543 states have call predecessors, (3991), 7848 states have return successors, (69525), 4244 states have call predecessors, (69525), 3989 states have call successors, (69525) [2025-03-08 05:54:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122509 states to 122509 states and 264385 transitions. [2025-03-08 05:54:32,676 INFO L78 Accepts]: Start accepts. Automaton has 122509 states and 264385 transitions. Word has length 121 [2025-03-08 05:54:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:54:32,677 INFO L471 AbstractCegarLoop]: Abstraction has 122509 states and 264385 transitions. [2025-03-08 05:54:32,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 122509 states and 264385 transitions. [2025-03-08 05:54:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:54:32,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:54:32,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:54:32,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 05:54:32,730 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:54:32,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:54:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1833624980, now seen corresponding path program 1 times [2025-03-08 05:54:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:54:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706743528] [2025-03-08 05:54:32,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:54:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:54:32,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:54:32,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:54:32,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:54:32,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:54:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:54:32,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:54:32,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706743528] [2025-03-08 05:54:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706743528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:54:32,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:54:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:54:32,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200799627] [2025-03-08 05:54:32,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:54:32,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:54:32,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:54:32,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:54:32,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:54:32,852 INFO L87 Difference]: Start difference. First operand 122509 states and 264385 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:54:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:54:39,357 INFO L93 Difference]: Finished difference Result 297507 states and 680116 transitions. [2025-03-08 05:54:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:54:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2025-03-08 05:54:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:54:40,590 INFO L225 Difference]: With dead ends: 297507 [2025-03-08 05:54:40,590 INFO L226 Difference]: Without dead ends: 175013 [2025-03-08 05:54:40,886 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 [2025-03-08 05:54:40,887 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 520 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:54:40,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 741 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:54:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175013 states.