./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sum40-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/reducercommutativity/sum40-2.i -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 d615723bd3f4193c30af142b587a80ce924c7083a75b532c90d98415d1700958 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:53:21,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:53:21,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:53:21,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:53:21,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:53:21,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:53:21,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:53:21,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:53:21,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:53:21,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:53:21,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:53:21,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:53:21,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:53:21,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:53:21,870 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:53:21,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:53:21,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:53:21,871 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:53:21,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:53:21,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:53:21,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:53:21,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:53:21,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:53:21,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:53:21,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:53:21,874 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:53:21,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:53:21,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:53:21,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:53:21,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:53:21,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:53:21,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:53:21,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:53:21,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:53:21,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:53:21,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:53:21,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:53:21,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:53:21,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:53:21,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:53:21,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:53:21,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:53:21,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d615723bd3f4193c30af142b587a80ce924c7083a75b532c90d98415d1700958 [2024-11-08 09:53:22,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:53:22,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:53:22,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:53:22,208 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:53:22,208 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:53:22,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum40-2.i [2024-11-08 09:53:23,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:53:23,865 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:53:23,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i [2024-11-08 09:53:23,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbfc7ed7/58c1b375e9684afc86b9a86f41c2f08b/FLAGa3d649583 [2024-11-08 09:53:24,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbfc7ed7/58c1b375e9684afc86b9a86f41c2f08b [2024-11-08 09:53:24,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:53:24,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:53:24,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:53:24,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:53:24,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:53:24,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d994a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24, skipping insertion in model container [2024-11-08 09:53:24,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,307 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:53:24,519 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i[1277,1290] [2024-11-08 09:53:24,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:53:24,532 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:53:24,560 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i[1277,1290] [2024-11-08 09:53:24,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:53:24,587 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:53:24,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24 WrapperNode [2024-11-08 09:53:24,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:53:24,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:53:24,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:53:24,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:53:24,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,638 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-08 09:53:24,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:53:24,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:53:24,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:53:24,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:53:24,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,677 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-08 09:53:24,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:53:24,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:53:24,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:53:24,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:53:24,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (1/1) ... [2024-11-08 09:53:24,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:53:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:24,735 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) [2024-11-08 09:53:24,737 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 [2024-11-08 09:53:24,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:53:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-08 09:53:24,775 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-08 09:53:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:53:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:53:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:53:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:53:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:53:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:53:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:53:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:53:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:53:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:53:24,842 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:53:24,844 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:53:24,999 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-08 09:53:24,999 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:53:25,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:53:25,014 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 09:53:25,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:53:25 BoogieIcfgContainer [2024-11-08 09:53:25,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:53:25,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:53:25,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:53:25,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:53:25,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:53:24" (1/3) ... [2024-11-08 09:53:25,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3ef4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:53:25, skipping insertion in model container [2024-11-08 09:53:25,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:53:24" (2/3) ... [2024-11-08 09:53:25,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3ef4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:53:25, skipping insertion in model container [2024-11-08 09:53:25,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:53:25" (3/3) ... [2024-11-08 09:53:25,027 INFO L112 eAbstractionObserver]: Analyzing ICFG sum40-2.i [2024-11-08 09:53:25,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:53:25,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:53:25,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:53:25,108 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;@7433e6a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:53:25,109 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:53:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 09:53:25,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:25,119 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:25,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:25,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1943508516, now seen corresponding path program 1 times [2024-11-08 09:53:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945788923] [2024-11-08 09:53:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:25,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 09:53:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:25,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 09:53:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:25,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 09:53:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:53:25,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:25,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945788923] [2024-11-08 09:53:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945788923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537813396] [2024-11-08 09:53:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:25,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:25,513 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) [2024-11-08 09:53:25,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:53:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:25,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 09:53:25,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:53:25,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:53:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537813396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:53:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-08 09:53:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275818581] [2024-11-08 09:53:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:25,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 09:53:25,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 09:53:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:53:25,687 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:53:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:25,702 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2024-11-08 09:53:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 09:53:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-08 09:53:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:25,714 INFO L225 Difference]: With dead ends: 50 [2024-11-08 09:53:25,714 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 09:53:25,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:53:25,723 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:25,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 09:53:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-08 09:53:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-08 09:53:25,769 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2024-11-08 09:53:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:25,771 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-08 09:53:25,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:53:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-08 09:53:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 09:53:25,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:25,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:25,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 09:53:25,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-08 09:53:25,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:25,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash 248265046, now seen corresponding path program 1 times [2024-11-08 09:53:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:25,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923860142] [2024-11-08 09:53:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:25,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 09:53:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 09:53:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 09:53:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:53:26,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:26,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923860142] [2024-11-08 09:53:26,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923860142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:26,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729738934] [2024-11-08 09:53:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:26,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:26,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:26,161 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) [2024-11-08 09:53:26,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:53:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:53:26,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:53:26,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:53:26,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729738934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:26,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:53:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 09:53:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384998538] [2024-11-08 09:53:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:26,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:53:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:53:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:53:26,264 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 09:53:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:26,281 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-08 09:53:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:53:26,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-08 09:53:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:26,284 INFO L225 Difference]: With dead ends: 44 [2024-11-08 09:53:26,285 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 09:53:26,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:53:26,289 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:26,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 09:53:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-08 09:53:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-08 09:53:26,299 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2024-11-08 09:53:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:26,299 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-08 09:53:26,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 09:53:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-08 09:53:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 09:53:26,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:26,302 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:26,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:26,507 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,SelfDestructingSolverStorable1 [2024-11-08 09:53:26,508 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:26,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1661838444, now seen corresponding path program 1 times [2024-11-08 09:53:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459169547] [2024-11-08 09:53:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:53:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:53:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 09:53:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:53:26,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459169547] [2024-11-08 09:53:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459169547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970979061] [2024-11-08 09:53:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:26,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:26,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:26,616 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) [2024-11-08 09:53:26,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:53:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:26,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:53:26,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:53:26,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:53:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970979061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:26,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:53:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 09:53:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878097046] [2024-11-08 09:53:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:26,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:53:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:53:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:53:26,719 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:53:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:26,735 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-08 09:53:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:53:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-08 09:53:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:26,737 INFO L225 Difference]: With dead ends: 43 [2024-11-08 09:53:26,737 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 09:53:26,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:53:26,740 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:26,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 09:53:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 09:53:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-08 09:53:26,748 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-08 09:53:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:26,748 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-08 09:53:26,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:53:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-08 09:53:26,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 09:53:26,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:26,750 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:26,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 09:53:26,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:26,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:26,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 967398962, now seen corresponding path program 1 times [2024-11-08 09:53:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:26,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010286705] [2024-11-08 09:53:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:26,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:53:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 09:53:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 09:53:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 09:53:27,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010286705] [2024-11-08 09:53:27,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010286705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:27,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398786083] [2024-11-08 09:53:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:27,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:27,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:27,161 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) [2024-11-08 09:53:27,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:53:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:53:27,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 09:53:27,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:53:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398786083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:53:27,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:53:27,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 09:53:27,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746749689] [2024-11-08 09:53:27,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:53:27,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:53:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:53:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:53:27,254 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:53:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:27,274 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-08 09:53:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:53:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-08 09:53:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:27,276 INFO L225 Difference]: With dead ends: 40 [2024-11-08 09:53:27,276 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 09:53:27,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:53:27,277 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:27,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 09:53:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-08 09:53:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-08 09:53:27,284 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 37 [2024-11-08 09:53:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:27,284 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-08 09:53:27,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:53:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-08 09:53:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 09:53:27,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:27,286 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:27,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:27,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:27,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:27,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 804140464, now seen corresponding path program 1 times [2024-11-08 09:53:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:27,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887842354] [2024-11-08 09:53:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:27,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:53:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 09:53:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 09:53:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:53:27,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:27,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887842354] [2024-11-08 09:53:27,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887842354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684880126] [2024-11-08 09:53:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:27,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:27,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:27,652 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) [2024-11-08 09:53:27,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:53:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:27,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:53:27,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 09:53:27,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 09:53:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684880126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:27,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:27,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-08 09:53:27,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988462457] [2024-11-08 09:53:27,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:27,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 09:53:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 09:53:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:53:27,815 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:53:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:27,857 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2024-11-08 09:53:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 09:53:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-08 09:53:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:27,858 INFO L225 Difference]: With dead ends: 56 [2024-11-08 09:53:27,858 INFO L226 Difference]: Without dead ends: 35 [2024-11-08 09:53:27,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:53:27,859 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:27,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:53:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-08 09:53:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-08 09:53:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-08 09:53:27,864 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 39 [2024-11-08 09:53:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:27,865 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-08 09:53:27,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:53:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-08 09:53:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 09:53:27,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:27,867 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:27,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:53:28,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:28,073 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:28,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1550669448, now seen corresponding path program 2 times [2024-11-08 09:53:28,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:28,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984894781] [2024-11-08 09:53:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:28,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 09:53:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:28,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 09:53:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:28,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 09:53:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-08 09:53:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984894781] [2024-11-08 09:53:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984894781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394037119] [2024-11-08 09:53:28,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:53:28,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:28,213 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) [2024-11-08 09:53:28,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:53:28,299 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:53:28,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:28,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:53:28,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 09:53:28,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 09:53:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394037119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:28,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:28,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 09:53:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725776157] [2024-11-08 09:53:28,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:28,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 09:53:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 09:53:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:53:28,480 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:53:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:28,569 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-11-08 09:53:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 09:53:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-11-08 09:53:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:28,573 INFO L225 Difference]: With dead ends: 72 [2024-11-08 09:53:28,573 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 09:53:28,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:53:28,574 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:28,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 09:53:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-08 09:53:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-08 09:53:28,585 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 51 [2024-11-08 09:53:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:28,586 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-08 09:53:28,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:53:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-08 09:53:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 09:53:28,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:28,590 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:28,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:28,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:28,795 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:28,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2089754246, now seen corresponding path program 3 times [2024-11-08 09:53:28,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:28,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548742387] [2024-11-08 09:53:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:28,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:53:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 09:53:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 09:53:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 09:53:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548742387] [2024-11-08 09:53:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548742387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849903134] [2024-11-08 09:53:29,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:53:29,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:29,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:29,099 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) [2024-11-08 09:53:29,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:53:29,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 09:53:29,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:29,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:53:29,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-08 09:53:29,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-08 09:53:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849903134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:29,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:29,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-08 09:53:29,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100604424] [2024-11-08 09:53:29,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:29,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 09:53:29,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:29,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 09:53:29,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-08 09:53:29,294 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:29,374 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2024-11-08 09:53:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 09:53:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2024-11-08 09:53:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:29,376 INFO L225 Difference]: With dead ends: 84 [2024-11-08 09:53:29,377 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 09:53:29,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-08 09:53:29,379 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:29,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 09:53:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-08 09:53:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2024-11-08 09:53:29,391 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 65 [2024-11-08 09:53:29,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:29,391 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2024-11-08 09:53:29,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2024-11-08 09:53:29,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 09:53:29,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:29,396 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:29,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:29,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:29,597 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:29,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1032758224, now seen corresponding path program 4 times [2024-11-08 09:53:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505163140] [2024-11-08 09:53:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:29,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 09:53:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 09:53:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 09:53:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-08 09:53:29,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505163140] [2024-11-08 09:53:29,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505163140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26013659] [2024-11-08 09:53:29,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:53:29,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:29,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:29,927 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) [2024-11-08 09:53:29,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:53:30,043 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:53:30,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:30,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:53:30,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 178 proven. 4 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-08 09:53:30,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-08 09:53:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26013659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:30,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:30,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2024-11-08 09:53:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638276187] [2024-11-08 09:53:30,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:30,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 09:53:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 09:53:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-08 09:53:30,165 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:30,244 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2024-11-08 09:53:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 09:53:30,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2024-11-08 09:53:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:30,246 INFO L225 Difference]: With dead ends: 102 [2024-11-08 09:53:30,246 INFO L226 Difference]: Without dead ends: 69 [2024-11-08 09:53:30,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-08 09:53:30,247 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:30,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-08 09:53:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-08 09:53:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2024-11-08 09:53:30,261 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 91 [2024-11-08 09:53:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:30,261 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2024-11-08 09:53:30,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2024-11-08 09:53:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 09:53:30,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:30,265 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:30,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:30,465 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,SelfDestructingSolverStorable7 [2024-11-08 09:53:30,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:30,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1292895514, now seen corresponding path program 5 times [2024-11-08 09:53:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:30,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609524207] [2024-11-08 09:53:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:30,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:30,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 09:53:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:30,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 09:53:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:30,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 09:53:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-08 09:53:30,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:30,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609524207] [2024-11-08 09:53:30,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609524207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:30,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710499898] [2024-11-08 09:53:30,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:53:30,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:30,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:30,826 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) [2024-11-08 09:53:30,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 09:53:31,665 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-08 09:53:31,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:31,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:53:31,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-11-08 09:53:31,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-08 09:53:31,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710499898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:31,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:31,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2024-11-08 09:53:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329958215] [2024-11-08 09:53:31,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:31,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 09:53:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 09:53:31,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2024-11-08 09:53:31,988 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 29 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:32,100 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2024-11-08 09:53:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 09:53:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 29 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 101 [2024-11-08 09:53:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:32,102 INFO L225 Difference]: With dead ends: 128 [2024-11-08 09:53:32,102 INFO L226 Difference]: Without dead ends: 87 [2024-11-08 09:53:32,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2024-11-08 09:53:32,105 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:32,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-08 09:53:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-08 09:53:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2024-11-08 09:53:32,114 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 101 [2024-11-08 09:53:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:32,114 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2024-11-08 09:53:32,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 29 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2024-11-08 09:53:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 09:53:32,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:32,116 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 13, 13, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:32,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 09:53:32,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:32,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:32,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2141045228, now seen corresponding path program 6 times [2024-11-08 09:53:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:32,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776446192] [2024-11-08 09:53:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:32,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:32,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 09:53:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:32,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 09:53:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:32,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-08 09:53:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2024-11-08 09:53:32,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:32,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776446192] [2024-11-08 09:53:32,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776446192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:32,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986336085] [2024-11-08 09:53:32,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:53:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:32,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:53:32,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 09:53:33,053 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-08 09:53:33,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:33,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:53:33,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2024-11-08 09:53:33,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2024-11-08 09:53:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986336085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:33,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2024-11-08 09:53:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986667104] [2024-11-08 09:53:33,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:33,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 09:53:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 09:53:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-08 09:53:33,347 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:33,450 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2024-11-08 09:53:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 09:53:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 151 [2024-11-08 09:53:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:33,452 INFO L225 Difference]: With dead ends: 162 [2024-11-08 09:53:33,453 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 09:53:33,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-08 09:53:33,455 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:33,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 09:53:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2024-11-08 09:53:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2024-11-08 09:53:33,466 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 151 [2024-11-08 09:53:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:33,466 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2024-11-08 09:53:33,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2024-11-08 09:53:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-08 09:53:33,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:33,480 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:33,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 09:53:33,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 09:53:33,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:33,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash -386944830, now seen corresponding path program 7 times [2024-11-08 09:53:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597431667] [2024-11-08 09:53:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:34,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 09:53:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:34,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 09:53:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:34,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-08 09:53:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-08 09:53:34,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597431667] [2024-11-08 09:53:34,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597431667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815514082] [2024-11-08 09:53:34,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 09:53:34,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:34,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:53:34,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 09:53:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:34,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 09:53:34,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-08 09:53:34,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-08 09:53:34,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815514082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:34,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:34,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-08 09:53:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308507148] [2024-11-08 09:53:34,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:34,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 09:53:34,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:34,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 09:53:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 09:53:34,822 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:53:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:34,910 INFO L93 Difference]: Finished difference Result 209 states and 232 transitions. [2024-11-08 09:53:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 09:53:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 169 [2024-11-08 09:53:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:34,912 INFO L225 Difference]: With dead ends: 209 [2024-11-08 09:53:34,912 INFO L226 Difference]: Without dead ends: 136 [2024-11-08 09:53:34,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 09:53:34,913 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:34,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-08 09:53:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-08 09:53:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2024-11-08 09:53:34,923 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 169 [2024-11-08 09:53:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:34,923 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2024-11-08 09:53:34,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.606060606060606) internal successors, (86), 33 states have internal predecessors, (86), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:53:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2024-11-08 09:53:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-08 09:53:34,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:34,926 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 30, 30, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:34,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:35,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 09:53:35,127 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:35,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash -408026974, now seen corresponding path program 8 times [2024-11-08 09:53:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:35,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699202904] [2024-11-08 09:53:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:35,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:36,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 09:53:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:36,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 09:53:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:36,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-08 09:53:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-08 09:53:36,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:36,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699202904] [2024-11-08 09:53:36,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699202904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:36,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618416771] [2024-11-08 09:53:36,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:53:36,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:36,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:36,353 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:53:36,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 09:53:36,560 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:53:36,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:36,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 09:53:36,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-08 09:53:36,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2024-11-08 09:53:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618416771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:37,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:37,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2024-11-08 09:53:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445481168] [2024-11-08 09:53:37,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:37,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 09:53:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 09:53:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 09:53:37,544 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand has 43 states, 43 states have (on average 2.511627906976744) internal successors, (108), 43 states have internal predecessors, (108), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:53:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:37,668 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2024-11-08 09:53:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 09:53:37,669 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.511627906976744) internal successors, (108), 43 states have internal predecessors, (108), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 201 [2024-11-08 09:53:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:37,670 INFO L225 Difference]: With dead ends: 229 [2024-11-08 09:53:37,670 INFO L226 Difference]: Without dead ends: 156 [2024-11-08 09:53:37,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 376 SyntacticMatches, 22 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 09:53:37,672 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:37,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 157 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:37,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-08 09:53:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-08 09:53:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 151 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 160 transitions. [2024-11-08 09:53:37,681 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 160 transitions. Word has length 201 [2024-11-08 09:53:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:37,681 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 160 transitions. [2024-11-08 09:53:37,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.511627906976744) internal successors, (108), 43 states have internal predecessors, (108), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:53:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 160 transitions. [2024-11-08 09:53:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-08 09:53:37,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:37,684 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 40, 40, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:37,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:37,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 09:53:37,889 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:37,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2141633650, now seen corresponding path program 9 times [2024-11-08 09:53:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:37,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513080564] [2024-11-08 09:53:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:38,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:53:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:38,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-08 09:53:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:38,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-11-08 09:53:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3659 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 2615 trivial. 0 not checked. [2024-11-08 09:53:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513080564] [2024-11-08 09:53:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513080564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202799202] [2024-11-08 09:53:38,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:53:38,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:38,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:38,492 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:53:38,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 09:53:39,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-08 09:53:39,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:39,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 09:53:39,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3659 backedges. 848 proven. 196 refuted. 0 times theorem prover too weak. 2615 trivial. 0 not checked. [2024-11-08 09:53:39,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3659 backedges. 848 proven. 196 refuted. 0 times theorem prover too weak. 2615 trivial. 0 not checked. [2024-11-08 09:53:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202799202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:39,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:39,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-08 09:53:39,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50998799] [2024-11-08 09:53:39,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:39,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 09:53:39,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 09:53:39,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-08 09:53:39,479 INFO L87 Difference]: Start difference. First operand 156 states and 160 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:39,568 INFO L93 Difference]: Finished difference Result 259 states and 284 transitions. [2024-11-08 09:53:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 09:53:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 221 [2024-11-08 09:53:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:39,574 INFO L225 Difference]: With dead ends: 259 [2024-11-08 09:53:39,574 INFO L226 Difference]: Without dead ends: 188 [2024-11-08 09:53:39,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-08 09:53:39,577 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:39,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 140 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:39,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-08 09:53:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-08 09:53:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.0163934426229508) internal successors, (186), 183 states have internal predecessors, (186), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2024-11-08 09:53:39,598 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 221 [2024-11-08 09:53:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:39,599 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 192 transitions. [2024-11-08 09:53:39,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 192 transitions. [2024-11-08 09:53:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-08 09:53:39,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:39,607 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 40, 40, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:39,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 09:53:39,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 09:53:39,808 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:39,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash -498529938, now seen corresponding path program 10 times [2024-11-08 09:53:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:39,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867911365] [2024-11-08 09:53:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:39,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:40,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:53:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:41,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 09:53:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:41,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-11-08 09:53:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10091 backedges. 0 proven. 4628 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2024-11-08 09:53:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867911365] [2024-11-08 09:53:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867911365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651150199] [2024-11-08 09:53:41,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:53:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:41,229 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:53:41,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 09:53:41,518 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:53:41,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:53:41,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 09:53:41,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:53:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10091 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2024-11-08 09:53:41,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:53:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10091 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2024-11-08 09:53:42,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651150199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:53:42,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:53:42,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 42 [2024-11-08 09:53:42,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776695016] [2024-11-08 09:53:42,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:53:42,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-08 09:53:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:53:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-08 09:53:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 09:53:42,369 INFO L87 Difference]: Start difference. First operand 188 states and 192 transitions. Second operand has 42 states, 42 states have (on average 2.642857142857143) internal successors, (111), 42 states have internal predecessors, (111), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:42,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:53:42,471 INFO L93 Difference]: Finished difference Result 311 states and 330 transitions. [2024-11-08 09:53:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 09:53:42,472 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.642857142857143) internal successors, (111), 42 states have internal predecessors, (111), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 317 [2024-11-08 09:53:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:53:42,474 INFO L225 Difference]: With dead ends: 311 [2024-11-08 09:53:42,475 INFO L226 Difference]: Without dead ends: 208 [2024-11-08 09:53:42,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 609 SyntacticMatches, 22 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 09:53:42,476 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:53:42,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 117 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:53:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-08 09:53:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-08 09:53:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 203 states have internal predecessors, (206), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:53:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2024-11-08 09:53:42,490 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 317 [2024-11-08 09:53:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:53:42,490 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2024-11-08 09:53:42,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.642857142857143) internal successors, (111), 42 states have internal predecessors, (111), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:53:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2024-11-08 09:53:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-08 09:53:42,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:53:42,496 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 40, 40, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:53:42,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 09:53:42,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:42,697 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:53:42,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:53:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash -260814822, now seen corresponding path program 11 times [2024-11-08 09:53:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:53:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351904131] [2024-11-08 09:53:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:53:42,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:53:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:43,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:53:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:43,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-11-08 09:53:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:43,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-11-08 09:53:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:53:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16451 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 16255 trivial. 0 not checked. [2024-11-08 09:53:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:53:43,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351904131] [2024-11-08 09:53:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351904131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:53:43,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935220897] [2024-11-08 09:53:43,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:53:43,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:53:43,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:53:43,442 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:53:43,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process