./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2535b8df62b232497a5d3d6ff06546d8e28bdaf58cbf4426ff971bf84e825948 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:04:54,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:04:54,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:04:54,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:04:54,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:04:54,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:04:54,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:04:54,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:04:54,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:04:54,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:04:54,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:04:54,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:04:54,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:04:54,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:04:54,896 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:04:54,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:04:54,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:04:54,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:04:54,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:04:54,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:04:54,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:04:54,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:04:54,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:04:54,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:04:54,900 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:04:54,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:04:54,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:04:54,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:04:54,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:04:54,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:04:54,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:04:54,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:04:54,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:04:54,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:04:54,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:04:54,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:04:54,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:04:54,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:04:54,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:04:54,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:04:54,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:04:54,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:04:54,904 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2535b8df62b232497a5d3d6ff06546d8e28bdaf58cbf4426ff971bf84e825948 [2024-10-10 22:04:55,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:04:55,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:04:55,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:04:55,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:04:55,151 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:04:55,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c [2024-10-10 22:04:56,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:04:56,510 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:04:56,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c [2024-10-10 22:04:56,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f7c426840/999f4b01b3894272ad4efe6ca63e7c73/FLAG2c3913438 [2024-10-10 22:04:56,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f7c426840/999f4b01b3894272ad4efe6ca63e7c73 [2024-10-10 22:04:56,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:04:56,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:04:56,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:04:56,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:04:56,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:04:56,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676f5aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56, skipping insertion in model container [2024-10-10 22:04:56,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:04:56,688 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c[331,344] [2024-10-10 22:04:56,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:04:56,720 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:04:56,729 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c[331,344] [2024-10-10 22:04:56,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:04:56,751 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:04:56,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56 WrapperNode [2024-10-10 22:04:56,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:04:56,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:04:56,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:04:56,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:04:56,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,787 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-10-10 22:04:56,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:04:56,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:04:56,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:04:56,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:04:56,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,808 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-10 22:04:56,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:04:56,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:04:56,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:04:56,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:04:56,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (1/1) ... [2024-10-10 22:04:56,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:04:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:56,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:04:56,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:04:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:04:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:04:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:04:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:04:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:04:56,963 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:04:56,967 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:04:57,098 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-10 22:04:57,099 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:04:57,125 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:04:57,125 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-10 22:04:57,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:04:57 BoogieIcfgContainer [2024-10-10 22:04:57,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:04:57,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:04:57,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:04:57,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:04:57,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:04:56" (1/3) ... [2024-10-10 22:04:57,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ce599e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:04:57, skipping insertion in model container [2024-10-10 22:04:57,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:56" (2/3) ... [2024-10-10 22:04:57,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ce599e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:04:57, skipping insertion in model container [2024-10-10 22:04:57,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:04:57" (3/3) ... [2024-10-10 22:04:57,134 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_5.c [2024-10-10 22:04:57,147 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:04:57,148 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:04:57,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:04:57,211 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;@6bb62154, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:04:57,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:04:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 22:04:57,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:57,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:57,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:57,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -245393117, now seen corresponding path program 1 times [2024-10-10 22:04:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403603609] [2024-10-10 22:04:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:57,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403603609] [2024-10-10 22:04:57,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403603609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:57,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:57,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:04:57,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893872480] [2024-10-10 22:04:57,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:57,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:04:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:04:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:04:57,447 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:57,469 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2024-10-10 22:04:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:04:57,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 22:04:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:57,476 INFO L225 Difference]: With dead ends: 34 [2024-10-10 22:04:57,476 INFO L226 Difference]: Without dead ends: 16 [2024-10-10 22:04:57,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:04:57,481 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:57,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-10 22:04:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-10 22:04:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-10-10 22:04:57,509 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-10-10 22:04:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:57,509 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-10-10 22:04:57,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-10-10 22:04:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 22:04:57,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:57,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:57,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:04:57,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:57,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1639468179, now seen corresponding path program 1 times [2024-10-10 22:04:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:57,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622230110] [2024-10-10 22:04:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:57,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622230110] [2024-10-10 22:04:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622230110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:57,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:57,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:04:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709025636] [2024-10-10 22:04:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:57,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:04:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:04:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:04:57,657 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:57,704 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2024-10-10 22:04:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:04:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 22:04:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:57,705 INFO L225 Difference]: With dead ends: 41 [2024-10-10 22:04:57,705 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:04:57,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:04:57,706 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:57,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:04:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2024-10-10 22:04:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-10 22:04:57,714 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-10-10 22:04:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:57,714 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-10 22:04:57,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-10 22:04:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-10 22:04:57,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:57,715 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:57,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:04:57,716 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:57,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 563464204, now seen corresponding path program 1 times [2024-10-10 22:04:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:57,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329553316] [2024-10-10 22:04:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:57,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329553316] [2024-10-10 22:04:57,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329553316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:57,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:57,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:04:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750343970] [2024-10-10 22:04:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:57,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:04:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:04:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:04:57,958 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:58,017 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-10-10 22:04:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:04:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-10 22:04:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:58,018 INFO L225 Difference]: With dead ends: 41 [2024-10-10 22:04:58,018 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:04:58,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:04:58,019 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:58,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:04:58,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2024-10-10 22:04:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-10 22:04:58,022 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2024-10-10 22:04:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:58,022 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-10 22:04:58,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-10 22:04:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-10 22:04:58,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:58,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:58,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:04:58,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:58,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1243522574, now seen corresponding path program 1 times [2024-10-10 22:04:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:58,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728990502] [2024-10-10 22:04:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:58,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:58,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:58,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728990502] [2024-10-10 22:04:58,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728990502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642478912] [2024-10-10 22:04:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:58,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:04:58,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:04:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:58,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:04:58,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:58,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642478912] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:58,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-10 22:04:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281741922] [2024-10-10 22:04:58,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:58,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 22:04:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 22:04:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:04:58,289 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:58,404 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2024-10-10 22:04:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:04:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-10 22:04:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:58,406 INFO L225 Difference]: With dead ends: 67 [2024-10-10 22:04:58,407 INFO L226 Difference]: Without dead ends: 54 [2024-10-10 22:04:58,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-10 22:04:58,408 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 118 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:58,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 48 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:04:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-10 22:04:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2024-10-10 22:04:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-10-10 22:04:58,413 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15 [2024-10-10 22:04:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:58,413 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-10-10 22:04:58,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-10-10 22:04:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 22:04:58,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:58,414 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:58,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:04:58,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:58,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:58,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1322989487, now seen corresponding path program 1 times [2024-10-10 22:04:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495197629] [2024-10-10 22:04:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 22:04:58,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495197629] [2024-10-10 22:04:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495197629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319377390] [2024-10-10 22:04:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:58,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:58,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:04:58,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:04:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:58,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:04:58,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:59,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319377390] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:59,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:59,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-10-10 22:04:59,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979094446] [2024-10-10 22:04:59,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:59,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-10 22:04:59,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-10 22:04:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:04:59,155 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:59,562 INFO L93 Difference]: Finished difference Result 161 states and 206 transitions. [2024-10-10 22:04:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-10 22:04:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-10 22:04:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:59,563 INFO L225 Difference]: With dead ends: 161 [2024-10-10 22:04:59,564 INFO L226 Difference]: Without dead ends: 141 [2024-10-10 22:04:59,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-10-10 22:04:59,565 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 352 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:59,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 108 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:04:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-10 22:04:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 62. [2024-10-10 22:04:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-10-10 22:04:59,572 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 30 [2024-10-10 22:04:59,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:59,572 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-10-10 22:04:59,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:04:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-10-10 22:04:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:04:59,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:59,574 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:59,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:04:59,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:59,780 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:59,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1273021199, now seen corresponding path program 2 times [2024-10-10 22:04:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:59,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050723488] [2024-10-10 22:04:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-10-10 22:05:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050723488] [2024-10-10 22:05:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050723488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:05:00,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:05:00,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-10 22:05:00,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955466110] [2024-10-10 22:05:00,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:05:00,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:05:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:00,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:05:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:05:00,190 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:00,266 INFO L93 Difference]: Finished difference Result 183 states and 235 transitions. [2024-10-10 22:05:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:05:00,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-10 22:05:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:00,268 INFO L225 Difference]: With dead ends: 183 [2024-10-10 22:05:00,268 INFO L226 Difference]: Without dead ends: 143 [2024-10-10 22:05:00,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:05:00,269 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:00,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:05:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-10 22:05:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 109. [2024-10-10 22:05:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.25) internal successors, (135), 108 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2024-10-10 22:05:00,286 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 60 [2024-10-10 22:05:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:00,286 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2024-10-10 22:05:00,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2024-10-10 22:05:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:05:00,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:00,287 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:00,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 22:05:00,287 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:00,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1176578931, now seen corresponding path program 3 times [2024-10-10 22:05:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504116239] [2024-10-10 22:05:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:00,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 133 proven. 26 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 22:05:00,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:00,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504116239] [2024-10-10 22:05:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504116239] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784567552] [2024-10-10 22:05:00,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:05:00,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:00,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:00,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:05:00,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:05:00,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-10 22:05:00,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:05:00,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-10 22:05:00,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-10 22:05:01,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:05:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784567552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:05:01,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:05:01,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-10 22:05:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598869047] [2024-10-10 22:05:01,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:05:01,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:05:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:05:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:05:01,026 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:01,069 INFO L93 Difference]: Finished difference Result 116 states and 143 transitions. [2024-10-10 22:05:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:05:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-10 22:05:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:01,071 INFO L225 Difference]: With dead ends: 116 [2024-10-10 22:05:01,073 INFO L226 Difference]: Without dead ends: 114 [2024-10-10 22:05:01,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:05:01,074 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:01,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:05:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-10 22:05:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-10-10 22:05:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.247787610619469) internal successors, (141), 113 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 141 transitions. [2024-10-10 22:05:01,093 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 141 transitions. Word has length 60 [2024-10-10 22:05:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:01,094 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 141 transitions. [2024-10-10 22:05:01,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 141 transitions. [2024-10-10 22:05:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:05:01,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:01,095 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:01,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:05:01,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:01,296 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:01,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1176519349, now seen corresponding path program 1 times [2024-10-10 22:05:01,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:01,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515982822] [2024-10-10 22:05:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:01,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 133 proven. 26 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 22:05:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515982822] [2024-10-10 22:05:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515982822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170036270] [2024-10-10 22:05:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:01,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:01,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:05:01,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:05:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:01,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:05:01,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:05:01,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:05:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:05:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170036270] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:05:02,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:05:02,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 30 [2024-10-10 22:05:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290193421] [2024-10-10 22:05:02,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:05:02,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-10 22:05:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-10 22:05:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=574, Unknown=0, NotChecked=0, Total=930 [2024-10-10 22:05:02,206 INFO L87 Difference]: Start difference. First operand 114 states and 141 transitions. Second operand has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:03,927 INFO L93 Difference]: Finished difference Result 640 states and 824 transitions. [2024-10-10 22:05:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-10-10 22:05:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-10 22:05:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:03,930 INFO L225 Difference]: With dead ends: 640 [2024-10-10 22:05:03,930 INFO L226 Difference]: Without dead ends: 578 [2024-10-10 22:05:03,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2591, Invalid=4719, Unknown=0, NotChecked=0, Total=7310 [2024-10-10 22:05:03,934 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 553 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:03,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 173 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:05:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-10-10 22:05:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 159. [2024-10-10 22:05:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.2974683544303798) internal successors, (205), 158 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2024-10-10 22:05:03,946 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 60 [2024-10-10 22:05:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:03,946 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2024-10-10 22:05:03,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2024-10-10 22:05:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-10 22:05:03,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:03,948 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:03,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 22:05:04,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:05:04,149 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:04,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -219280783, now seen corresponding path program 2 times [2024-10-10 22:05:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:04,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269033073] [2024-10-10 22:05:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:04,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 615 proven. 297 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-10-10 22:05:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:05,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269033073] [2024-10-10 22:05:05,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269033073] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:05,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137808367] [2024-10-10 22:05:05,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:05:05,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:05,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:05:05,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:05:05,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-10 22:05:05,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:05:05,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:05:05,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2024-10-10 22:05:05,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:05:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137808367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:05:05,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:05:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2024-10-10 22:05:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749576565] [2024-10-10 22:05:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:05:05,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:05:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:05:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:05:05,610 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:05,690 INFO L93 Difference]: Finished difference Result 166 states and 213 transitions. [2024-10-10 22:05:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 22:05:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-10-10 22:05:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:05,692 INFO L225 Difference]: With dead ends: 166 [2024-10-10 22:05:05,692 INFO L226 Difference]: Without dead ends: 164 [2024-10-10 22:05:05,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:05:05,693 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:05,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:05:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-10 22:05:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-10-10 22:05:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.294478527607362) internal successors, (211), 163 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2024-10-10 22:05:05,702 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 120 [2024-10-10 22:05:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:05,702 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2024-10-10 22:05:05,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2024-10-10 22:05:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-10 22:05:05,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:05,704 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:05,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:05:05,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:05,909 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:05,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1396320845, now seen corresponding path program 1 times [2024-10-10 22:05:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338312156] [2024-10-10 22:05:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:05,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 615 proven. 297 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-10 22:05:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338312156] [2024-10-10 22:05:06,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338312156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175161657] [2024-10-10 22:05:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:06,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:05:06,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:05:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:06,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-10 22:05:06,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:05:07,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:05:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:05:08,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175161657] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:05:08,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:05:08,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-10-10 22:05:08,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616063104] [2024-10-10 22:05:08,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:05:08,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-10 22:05:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:08,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-10 22:05:08,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-10-10 22:05:08,173 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 62 states, 62 states have (on average 4.838709677419355) internal successors, (300), 61 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:09,723 INFO L93 Difference]: Finished difference Result 5220 states and 6684 transitions. [2024-10-10 22:05:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-10 22:05:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.838709677419355) internal successors, (300), 61 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-10-10 22:05:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:09,737 INFO L225 Difference]: With dead ends: 5220 [2024-10-10 22:05:09,738 INFO L226 Difference]: Without dead ends: 5068 [2024-10-10 22:05:09,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-10-10 22:05:09,741 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1928 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:09,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 387 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:05:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2024-10-10 22:05:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 984. [2024-10-10 22:05:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 1.2065106815869786) internal successors, (1186), 983 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1186 transitions. [2024-10-10 22:05:09,812 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1186 transitions. Word has length 125 [2024-10-10 22:05:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:09,812 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1186 transitions. [2024-10-10 22:05:09,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.838709677419355) internal successors, (300), 61 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:09,812 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1186 transitions. [2024-10-10 22:05:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-10-10 22:05:09,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:09,819 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 34, 23, 23, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:09,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:05:10,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 22:05:10,020 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:10,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1229055769, now seen corresponding path program 2 times [2024-10-10 22:05:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015531528] [2024-10-10 22:05:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 1024 proven. 8 refuted. 0 times theorem prover too weak. 4193 trivial. 0 not checked. [2024-10-10 22:05:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015531528] [2024-10-10 22:05:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015531528] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414289486] [2024-10-10 22:05:10,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:05:10,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:10,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:05:10,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:05:10,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:05:10,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:05:11,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-10 22:05:11,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:05:12,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:05:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:05:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414289486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:05:14,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:05:14,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 49, 49] total 105 [2024-10-10 22:05:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064716283] [2024-10-10 22:05:14,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:05:14,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-10-10 22:05:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-10-10 22:05:14,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4680, Invalid=6240, Unknown=0, NotChecked=0, Total=10920 [2024-10-10 22:05:14,245 INFO L87 Difference]: Start difference. First operand 984 states and 1186 transitions. Second operand has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 105 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:29,619 INFO L93 Difference]: Finished difference Result 3168 states and 3906 transitions. [2024-10-10 22:05:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-10-10 22:05:29,620 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 105 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2024-10-10 22:05:29,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:29,625 INFO L225 Difference]: With dead ends: 3168 [2024-10-10 22:05:29,625 INFO L226 Difference]: Without dead ends: 2206 [2024-10-10 22:05:29,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59286 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=47127, Invalid=103029, Unknown=0, NotChecked=0, Total=150156 [2024-10-10 22:05:29,637 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4754 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:29,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 611 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 22:05:29,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2024-10-10 22:05:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 586. [2024-10-10 22:05:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.1692307692307693) internal successors, (684), 585 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 684 transitions. [2024-10-10 22:05:29,669 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 684 transitions. Word has length 245 [2024-10-10 22:05:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:29,669 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 684 transitions. [2024-10-10 22:05:29,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 105 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:05:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 684 transitions. [2024-10-10 22:05:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-10 22:05:29,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:29,674 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:29,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 22:05:29,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:29,877 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:29,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1878432051, now seen corresponding path program 3 times [2024-10-10 22:05:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:29,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418215469] [2024-10-10 22:05:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 11091 proven. 5499 refuted. 0 times theorem prover too weak. 5363 trivial. 0 not checked. [2024-10-10 22:05:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418215469] [2024-10-10 22:05:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418215469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302452339] [2024-10-10 22:05:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:05:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:36,531 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:05:36,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:05:36,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:05:36,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:05:36,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-10 22:05:36,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2024-10-10 22:05:38,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:05:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2024-10-10 22:05:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302452339] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:05:43,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:05:43,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 6, 7] total 61 [2024-10-10 22:05:43,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119465531] [2024-10-10 22:05:43,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:05:43,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-10 22:05:43,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:43,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-10 22:05:43,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1280, Invalid=2502, Unknown=0, NotChecked=0, Total=3782 [2024-10-10 22:05:43,315 INFO L87 Difference]: Start difference. First operand 586 states and 684 transitions. Second operand has 62 states, 62 states have (on average 4.774193548387097) internal successors, (296), 61 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)