./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-patterns/array22_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:23:57,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:23:57,750 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:23:57,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:23:57,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:23:57,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:23:57,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:23:57,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:23:57,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:23:57,790 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:23:57,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:23:57,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:23:57,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:23:57,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:23:57,792 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:23:57,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:23:57,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:23:57,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:23:57,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:23:57,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:23:57,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:23:57,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:23:57,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:23:57,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:23:57,794 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:23:57,794 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:23:57,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:23:57,795 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:23:57,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:23:57,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:23:57,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:23:57,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:23:57,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:23:57,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:23:57,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:23:57,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:23:57,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:23:57,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:23:57,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:23:57,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:23:57,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:23:57,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:23:57,803 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2024-10-13 22:23:57,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:23:58,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:23:58,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:23:58,013 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:23:58,013 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:23:58,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c [2024-10-13 22:23:59,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:23:59,368 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:23:59,368 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c [2024-10-13 22:23:59,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abdf91461/144aa03423b84b888d52b45fbdac95bf/FLAG893ca3ac2 [2024-10-13 22:23:59,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abdf91461/144aa03423b84b888d52b45fbdac95bf [2024-10-13 22:23:59,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:23:59,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:23:59,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:23:59,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:23:59,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:23:59,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:23:59" (1/1) ... [2024-10-13 22:23:59,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2511951b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:23:59, skipping insertion in model container [2024-10-13 22:23:59,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:23:59" (1/1) ... [2024-10-13 22:23:59,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:23:59,940 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-patterns/array22_pattern.c[1347,1360] [2024-10-13 22:23:59,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:23:59,981 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:23:59,990 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-patterns/array22_pattern.c[1347,1360] [2024-10-13 22:24:00,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:24:00,017 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:24:00,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00 WrapperNode [2024-10-13 22:24:00,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:24:00,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:24:00,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:24:00,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:24:00,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,051 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2024-10-13 22:24:00,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:24:00,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:24:00,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:24:00,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:24:00,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,081 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 22:24:00,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:24:00,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:24:00,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:24:00,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:24:00,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (1/1) ... [2024-10-13 22:24:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:24:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:00,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 22:24:00,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 22:24:00,196 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-10-13 22:24:00,196 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 22:24:00,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:24:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:24:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:24:00,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:24:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:24:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:24:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:24:00,252 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:24:00,253 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:24:00,440 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-10-13 22:24:00,440 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:24:00,465 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:24:00,466 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-13 22:24:00,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:24:00 BoogieIcfgContainer [2024-10-13 22:24:00,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:24:00,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:24:00,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:24:00,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:24:00,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:23:59" (1/3) ... [2024-10-13 22:24:00,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56103450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:24:00, skipping insertion in model container [2024-10-13 22:24:00,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:24:00" (2/3) ... [2024-10-13 22:24:00,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56103450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:24:00, skipping insertion in model container [2024-10-13 22:24:00,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:24:00" (3/3) ... [2024-10-13 22:24:00,475 INFO L112 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2024-10-13 22:24:00,489 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:24:00,489 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:24:00,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:24:00,549 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;@786852e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:24:00,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:24:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 22:24:00,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:00,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:00,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:00,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash 993482277, now seen corresponding path program 1 times [2024-10-13 22:24:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496111700] [2024-10-13 22:24:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:00,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:24:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:00,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496111700] [2024-10-13 22:24:00,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496111700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:24:00,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:24:00,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:24:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067311630] [2024-10-13 22:24:00,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:24:00,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:24:00,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:00,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:24:00,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:24:00,724 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 22:24:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:00,752 INFO L93 Difference]: Finished difference Result 70 states and 108 transitions. [2024-10-13 22:24:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:24:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-13 22:24:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:00,761 INFO L225 Difference]: With dead ends: 70 [2024-10-13 22:24:00,761 INFO L226 Difference]: Without dead ends: 34 [2024-10-13 22:24:00,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:24:00,765 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:00,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:24:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-13 22:24:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-13 22:24:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-10-13 22:24:00,790 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2024-10-13 22:24:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:00,790 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-10-13 22:24:00,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 22:24:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-10-13 22:24:00,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 22:24:00,792 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:00,792 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:00,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:24:00,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:00,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash 774600703, now seen corresponding path program 1 times [2024-10-13 22:24:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897510497] [2024-10-13 22:24:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:00,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:00,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-13 22:24:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 22:24:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 22:24:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-13 22:24:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 22:24:01,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:01,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897510497] [2024-10-13 22:24:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897510497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:24:01,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:24:01,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:24:01,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809609780] [2024-10-13 22:24:01,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:24:01,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:24:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:01,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:24:01,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:24:01,035 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:01,055 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-10-13 22:24:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:24:01,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-10-13 22:24:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:01,056 INFO L225 Difference]: With dead ends: 41 [2024-10-13 22:24:01,056 INFO L226 Difference]: Without dead ends: 37 [2024-10-13 22:24:01,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:24:01,058 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:01,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:24:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-13 22:24:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-13 22:24:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-10-13 22:24:01,070 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 41 [2024-10-13 22:24:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:01,071 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-10-13 22:24:01,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-10-13 22:24:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-13 22:24:01,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:01,074 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:01,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:24:01,075 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:01,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1126091322, now seen corresponding path program 1 times [2024-10-13 22:24:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973659743] [2024-10-13 22:24:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-13 22:24:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 22:24:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 22:24:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-13 22:24:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 22:24:01,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:01,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973659743] [2024-10-13 22:24:01,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973659743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:24:01,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:24:01,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 22:24:01,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859852870] [2024-10-13 22:24:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:24:01,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 22:24:01,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:01,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 22:24:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:24:01,218 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:01,322 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2024-10-13 22:24:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 22:24:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-10-13 22:24:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:01,323 INFO L225 Difference]: With dead ends: 77 [2024-10-13 22:24:01,323 INFO L226 Difference]: Without dead ends: 45 [2024-10-13 22:24:01,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:24:01,324 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:01,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 99 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-13 22:24:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2024-10-13 22:24:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-10-13 22:24:01,334 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 45 [2024-10-13 22:24:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:01,335 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-10-13 22:24:01,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-10-13 22:24:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-13 22:24:01,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:01,337 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:01,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:24:01,338 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:01,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash 412743318, now seen corresponding path program 1 times [2024-10-13 22:24:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771662859] [2024-10-13 22:24:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-13 22:24:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-13 22:24:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-13 22:24:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-13 22:24:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 22:24:01,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771662859] [2024-10-13 22:24:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771662859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:24:01,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:24:01,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:24:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398118567] [2024-10-13 22:24:01,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:24:01,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:24:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:24:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:24:01,504 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:01,567 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2024-10-13 22:24:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:24:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2024-10-13 22:24:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:01,569 INFO L225 Difference]: With dead ends: 76 [2024-10-13 22:24:01,569 INFO L226 Difference]: Without dead ends: 42 [2024-10-13 22:24:01,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:24:01,570 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:01,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-13 22:24:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-10-13 22:24:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-10-13 22:24:01,581 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 48 [2024-10-13 22:24:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:01,582 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-10-13 22:24:01,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-10-13 22:24:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-13 22:24:01,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:01,584 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:01,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 22:24:01,585 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:01,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash -429315470, now seen corresponding path program 1 times [2024-10-13 22:24:01,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:01,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42155074] [2024-10-13 22:24:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 22:24:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-13 22:24:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-13 22:24:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 22:24:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:24:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:01,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42155074] [2024-10-13 22:24:01,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42155074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:01,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831978192] [2024-10-13 22:24:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:01,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:01,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:01,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:24:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:01,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:24:01,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:24:01,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:24:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831978192] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:24:02,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:24:02,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 22:24:02,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27680382] [2024-10-13 22:24:02,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:02,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 22:24:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 22:24:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-13 22:24:02,011 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-13 22:24:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:02,116 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2024-10-13 22:24:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 22:24:02,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 49 [2024-10-13 22:24:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:02,117 INFO L225 Difference]: With dead ends: 79 [2024-10-13 22:24:02,117 INFO L226 Difference]: Without dead ends: 46 [2024-10-13 22:24:02,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:24:02,118 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:02,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 122 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-13 22:24:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-10-13 22:24:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-10-13 22:24:02,125 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 49 [2024-10-13 22:24:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:02,126 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-10-13 22:24:02,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-13 22:24:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-10-13 22:24:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-13 22:24:02,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:02,127 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:02,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:24:02,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:02,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:02,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1120416855, now seen corresponding path program 2 times [2024-10-13 22:24:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454393151] [2024-10-13 22:24:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:02,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:02,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 22:24:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:02,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 22:24:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:02,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-13 22:24:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:02,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-13 22:24:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 22:24:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454393151] [2024-10-13 22:24:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454393151] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310352786] [2024-10-13 22:24:02,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:24:02,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:02,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:02,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:24:02,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:24:02,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:24:02,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 22:24:02,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:24:02,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 22:24:02,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310352786] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:24:02,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:24:02,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 22:24:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527241828] [2024-10-13 22:24:02,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:02,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 22:24:02,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:02,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 22:24:02,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 22:24:02,643 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-13 22:24:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:02,745 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2024-10-13 22:24:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 22:24:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2024-10-13 22:24:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:02,746 INFO L225 Difference]: With dead ends: 93 [2024-10-13 22:24:02,746 INFO L226 Difference]: Without dead ends: 62 [2024-10-13 22:24:02,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 22:24:02,747 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:02,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 212 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-13 22:24:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2024-10-13 22:24:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-13 22:24:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-10-13 22:24:02,754 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 51 [2024-10-13 22:24:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:02,754 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-10-13 22:24:02,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-13 22:24:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-10-13 22:24:02,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-13 22:24:02,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:02,755 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:02,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 22:24:02,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 22:24:02,956 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:02,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1454765375, now seen corresponding path program 3 times [2024-10-13 22:24:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:02,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208159011] [2024-10-13 22:24:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:02,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:24:02,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976799242] [2024-10-13 22:24:02,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:24:02,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:02,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:02,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:24:03,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-13 22:24:03,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:24:03,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-10-13 22:24:03,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:03,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:24:03,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-13 22:24:03,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:03,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:03,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:03,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-10-13 22:24:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:03,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:03,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:03,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:03,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:03,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-10-13 22:24:04,753 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-10-13 22:24:04,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-10-13 22:24:05,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 126 [2024-10-13 22:24:05,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,444 INFO L349 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2024-10-13 22:24:05,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 126 treesize of output 223 [2024-10-13 22:24:05,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:05,596 INFO L349 Elim1Store]: treesize reduction 144, result has 37.1 percent of original size [2024-10-13 22:24:05,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 137 treesize of output 171 [2024-10-13 22:24:06,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:06,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 66 [2024-10-13 22:24:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:24:06,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208159011] [2024-10-13 22:24:08,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 22:24:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976799242] [2024-10-13 22:24:08,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976799242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:08,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:24:08,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2024-10-13 22:24:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414448286] [2024-10-13 22:24:08,528 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:08,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-13 22:24:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-13 22:24:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2933, Unknown=0, NotChecked=0, Total=3306 [2024-10-13 22:24:08,530 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 38 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 22:24:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:09,538 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2024-10-13 22:24:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-13 22:24:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 61 [2024-10-13 22:24:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:09,540 INFO L225 Difference]: With dead ends: 149 [2024-10-13 22:24:09,540 INFO L226 Difference]: Without dead ends: 104 [2024-10-13 22:24:09,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1742 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=476, Invalid=3684, Unknown=0, NotChecked=0, Total=4160 [2024-10-13 22:24:09,542 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 79 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:09,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 319 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:24:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-13 22:24:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2024-10-13 22:24:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 75 states have internal predecessors, (91), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-13 22:24:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2024-10-13 22:24:09,556 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 61 [2024-10-13 22:24:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:09,557 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2024-10-13 22:24:09,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 22:24:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2024-10-13 22:24:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-13 22:24:09,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:09,558 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:09,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 22:24:09,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:09,758 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:09,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash -539379331, now seen corresponding path program 1 times [2024-10-13 22:24:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:09,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163250628] [2024-10-13 22:24:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 22:24:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-13 22:24:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 22:24:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-13 22:24:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-13 22:24:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163250628] [2024-10-13 22:24:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163250628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:24:09,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:24:09,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:24:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50230219] [2024-10-13 22:24:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:24:09,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:24:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:24:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:24:09,832 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-13 22:24:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:09,851 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2024-10-13 22:24:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:24:09,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2024-10-13 22:24:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:09,853 INFO L225 Difference]: With dead ends: 135 [2024-10-13 22:24:09,853 INFO L226 Difference]: Without dead ends: 99 [2024-10-13 22:24:09,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:24:09,854 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:09,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:24:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-13 22:24:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-10-13 22:24:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 81 states have internal predecessors, (97), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-13 22:24:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2024-10-13 22:24:09,865 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 61 [2024-10-13 22:24:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:09,866 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-10-13 22:24:09,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-13 22:24:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2024-10-13 22:24:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-13 22:24:09,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:09,867 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:09,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 22:24:09,867 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:09,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1717531676, now seen corresponding path program 1 times [2024-10-13 22:24:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:09,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858014128] [2024-10-13 22:24:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:09,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 22:24:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-13 22:24:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 22:24:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:09,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-13 22:24:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-13 22:24:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:10,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858014128] [2024-10-13 22:24:10,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858014128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:10,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537546996] [2024-10-13 22:24:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:10,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:10,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:10,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:10,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:24:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 22:24:10,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 22:24:10,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-13 22:24:10,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537546996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:24:10,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:24:10,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 16 [2024-10-13 22:24:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400029148] [2024-10-13 22:24:10,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:10,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 22:24:10,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 22:24:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:24:10,324 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-13 22:24:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:10,578 INFO L93 Difference]: Finished difference Result 219 states and 273 transitions. [2024-10-13 22:24:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 22:24:10,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2024-10-13 22:24:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:10,579 INFO L225 Difference]: With dead ends: 219 [2024-10-13 22:24:10,579 INFO L226 Difference]: Without dead ends: 165 [2024-10-13 22:24:10,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-13 22:24:10,580 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:10,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 277 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:24:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-10-13 22:24:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 101. [2024-10-13 22:24:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.180722891566265) internal successors, (98), 82 states have internal predecessors, (98), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-10-13 22:24:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2024-10-13 22:24:10,603 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 61 [2024-10-13 22:24:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:10,603 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2024-10-13 22:24:10,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-13 22:24:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2024-10-13 22:24:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-13 22:24:10,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:10,604 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:10,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:24:10,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:10,809 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:10,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1516804989, now seen corresponding path program 1 times [2024-10-13 22:24:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019507228] [2024-10-13 22:24:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-13 22:24:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-13 22:24:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 22:24:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-13 22:24:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-13 22:24:10,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019507228] [2024-10-13 22:24:10,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019507228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498444711] [2024-10-13 22:24:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:10,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:10,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:10,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:24:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:10,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 22:24:10,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-13 22:24:10,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 22:24:10,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498444711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:24:10,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 22:24:10,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 22:24:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51094266] [2024-10-13 22:24:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:24:10,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:24:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:24:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:24:10,930 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:10,953 INFO L93 Difference]: Finished difference Result 147 states and 177 transitions. [2024-10-13 22:24:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:24:10,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-13 22:24:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:10,954 INFO L225 Difference]: With dead ends: 147 [2024-10-13 22:24:10,954 INFO L226 Difference]: Without dead ends: 101 [2024-10-13 22:24:10,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 22:24:10,955 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:10,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:24:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-13 22:24:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-10-13 22:24:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 82 states have internal predecessors, (96), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-10-13 22:24:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2024-10-13 22:24:10,966 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 61 [2024-10-13 22:24:10,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:10,966 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2024-10-13 22:24:10,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-13 22:24:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2024-10-13 22:24:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-13 22:24:10,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:10,967 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:10,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 22:24:11,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 22:24:11,168 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:11,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1331678125, now seen corresponding path program 4 times [2024-10-13 22:24:11,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:11,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317005089] [2024-10-13 22:24:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:11,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-13 22:24:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 22:24:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-13 22:24:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 22:24:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 22:24:11,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317005089] [2024-10-13 22:24:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317005089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911916242] [2024-10-13 22:24:11,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:24:11,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:11,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:11,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:11,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:24:11,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:24:11,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:24:11,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:24:11,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-13 22:24:11,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 22:24:11,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911916242] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:24:11,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:24:11,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:24:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7240497] [2024-10-13 22:24:11,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:11,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:24:11,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:24:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:24:11,399 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-13 22:24:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:11,510 INFO L93 Difference]: Finished difference Result 214 states and 260 transitions. [2024-10-13 22:24:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 22:24:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2024-10-13 22:24:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:11,512 INFO L225 Difference]: With dead ends: 214 [2024-10-13 22:24:11,512 INFO L226 Difference]: Without dead ends: 153 [2024-10-13 22:24:11,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:24:11,513 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:11,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 187 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-13 22:24:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2024-10-13 22:24:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 123 states have (on average 1.170731707317073) internal successors, (144), 121 states have internal predecessors, (144), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-10-13 22:24:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2024-10-13 22:24:11,528 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 62 [2024-10-13 22:24:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:11,529 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2024-10-13 22:24:11,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-13 22:24:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2024-10-13 22:24:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-13 22:24:11,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:11,530 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:11,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 22:24:11,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:11,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:11,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1763084497, now seen corresponding path program 5 times [2024-10-13 22:24:11,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:11,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184197995] [2024-10-13 22:24:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-13 22:24:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 22:24:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 22:24:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-13 22:24:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-13 22:24:11,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184197995] [2024-10-13 22:24:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184197995] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:11,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254201074] [2024-10-13 22:24:11,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:24:11,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:11,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:11,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:24:11,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-13 22:24:11,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:24:11,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:24:11,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-13 22:24:11,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-13 22:24:12,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254201074] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:24:12,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:24:12,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-13 22:24:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8732942] [2024-10-13 22:24:12,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:12,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 22:24:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 22:24:12,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-10-13 22:24:12,031 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-13 22:24:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:12,187 INFO L93 Difference]: Finished difference Result 291 states and 352 transitions. [2024-10-13 22:24:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 22:24:12,188 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2024-10-13 22:24:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:12,189 INFO L225 Difference]: With dead ends: 291 [2024-10-13 22:24:12,191 INFO L226 Difference]: Without dead ends: 175 [2024-10-13 22:24:12,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-10-13 22:24:12,191 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:12,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 194 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-13 22:24:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2024-10-13 22:24:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.1742424242424243) internal successors, (155), 130 states have internal predecessors, (155), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-10-13 22:24:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 189 transitions. [2024-10-13 22:24:12,212 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 189 transitions. Word has length 63 [2024-10-13 22:24:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:12,212 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 189 transitions. [2024-10-13 22:24:12,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-13 22:24:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 189 transitions. [2024-10-13 22:24:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-13 22:24:12,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:12,213 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:12,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 22:24:12,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:12,418 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:12,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -935028437, now seen corresponding path program 6 times [2024-10-13 22:24:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:12,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405142573] [2024-10-13 22:24:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:12,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 22:24:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:12,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 22:24:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:12,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 22:24:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:12,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-13 22:24:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:12,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-13 22:24:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-13 22:24:12,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:24:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405142573] [2024-10-13 22:24:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405142573] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:24:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012130459] [2024-10-13 22:24:12,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:24:12,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:12,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:12,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:12,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:24:13,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-13 22:24:13,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:24:13,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 22:24:13,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 57 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-13 22:24:13,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:24:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-13 22:24:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012130459] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:24:13,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:24:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 22:24:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498683547] [2024-10-13 22:24:13,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:24:13,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 22:24:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:24:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 22:24:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 22:24:13,592 INFO L87 Difference]: Start difference. First operand 158 states and 189 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-13 22:24:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:24:13,713 INFO L93 Difference]: Finished difference Result 208 states and 246 transitions. [2024-10-13 22:24:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 22:24:13,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 68 [2024-10-13 22:24:13,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:24:13,714 INFO L225 Difference]: With dead ends: 208 [2024-10-13 22:24:13,714 INFO L226 Difference]: Without dead ends: 157 [2024-10-13 22:24:13,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 138 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-10-13 22:24:13,715 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:24:13,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 310 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:24:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-13 22:24:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2024-10-13 22:24:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 127 states have (on average 1.141732283464567) internal successors, (145), 125 states have internal predecessors, (145), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2024-10-13 22:24:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 179 transitions. [2024-10-13 22:24:13,729 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 179 transitions. Word has length 68 [2024-10-13 22:24:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:24:13,730 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 179 transitions. [2024-10-13 22:24:13,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-13 22:24:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 179 transitions. [2024-10-13 22:24:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-13 22:24:13,730 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:24:13,731 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:24:13,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 22:24:13,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 22:24:13,935 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:24:13,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:24:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash 6390840, now seen corresponding path program 7 times [2024-10-13 22:24:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:24:13,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512194273] [2024-10-13 22:24:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:24:13,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:24:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:24:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992535497] [2024-10-13 22:24:13,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:24:13,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:24:13,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:24:13,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:24:13,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:24:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:24:15,875 WARN L253 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-10-13 22:24:15,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:24:15,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:24:15,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-13 22:24:16,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-13 22:24:16,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-13 22:24:16,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-10-13 22:24:16,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-10-13 22:24:16,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-10-13 22:24:16,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-10-13 22:24:16,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:16,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-10-13 22:24:17,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:17,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:17,905 INFO L349 Elim1Store]: treesize reduction 336, result has 31.8 percent of original size [2024-10-13 22:24:17,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 39 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 165 case distinctions, treesize of input 144 treesize of output 266 [2024-10-13 22:24:19,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 167 [2024-10-13 22:24:19,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:24:19,737 INFO L349 Elim1Store]: treesize reduction 318, result has 0.3 percent of original size [2024-10-13 22:24:19,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 54 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 12 case distinctions, treesize of input 167 treesize of output 294 [2024-10-13 22:24:27,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 662 treesize of output 544 [2024-10-13 22:24:27,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:24:27,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 36 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 434 treesize of output 416 [2024-10-13 22:24:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:24:32,601 INFO L311 TraceCheckSpWp]: Computing backward predicates...