./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b5d267cd1e473b445c52ec06f60f3c8a73f12a2c5a7f8cdb18f8745b90aa156 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:11:45,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:11:45,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:11:45,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:11:45,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:11:45,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:11:45,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:11:45,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:11:45,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:11:45,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:11:45,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:11:45,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:11:45,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:11:45,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:11:45,790 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:11:45,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:11:45,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:11:45,791 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:11:45,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:11:45,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:11:45,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:11:45,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:11:45,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:11:45,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:11:45,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:11:45,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:11:45,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:11:45,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:11:45,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:11:45,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:11:45,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:11:45,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:11:45,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:11:45,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:11:45,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:11:45,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:11:45,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:11:45,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:11:45,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:11:45,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:11:45,801 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:11:45,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:11:45,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b5d267cd1e473b445c52ec06f60f3c8a73f12a2c5a7f8cdb18f8745b90aa156 [2024-11-19 18:11:46,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:11:46,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:11:46,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:11:46,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:11:46,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:11:46,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c [2024-11-19 18:11:47,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:11:48,021 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:11:48,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label16.c [2024-11-19 18:11:48,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a7fc0a2/bcae999757424e3f9f614578e8ae5d06/FLAG0c9c0cad7 [2024-11-19 18:11:48,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a7fc0a2/bcae999757424e3f9f614578e8ae5d06 [2024-11-19 18:11:48,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:11:48,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:11:48,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:11:48,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:11:48,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:11:48,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:11:48" (1/1) ... [2024-11-19 18:11:48,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f28eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:48, skipping insertion in model container [2024-11-19 18:11:48,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:11:48" (1/1) ... [2024-11-19 18:11:48,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:11:48,572 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/eca-rers2012/Problem13_label16.c[3388,3401] [2024-11-19 18:11:49,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:11:49,403 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:11:49,432 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/eca-rers2012/Problem13_label16.c[3388,3401] [2024-11-19 18:11:49,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:11:49,962 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:11:49,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49 WrapperNode [2024-11-19 18:11:49,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:11:49,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:11:49,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:11:49,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:11:49,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:50,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:50,553 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-19 18:11:50,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:11:50,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:11:50,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:11:50,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:11:50,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:50,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:50,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:50,970 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:11:50,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:50,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:51,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:51,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:51,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:51,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:51,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:11:51,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:11:51,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:11:51,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:11:51,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (1/1) ... [2024-11-19 18:11:51,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:11:51,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:11:51,604 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) [2024-11-19 18:11:51,607 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 [2024-11-19 18:11:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:11:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:11:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:11:51,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:11:51,729 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:11:51,731 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:11:57,625 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-19 18:11:57,625 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:11:57,669 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:11:57,672 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:11:57,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:11:57 BoogieIcfgContainer [2024-11-19 18:11:57,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:11:57,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:11:57,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:11:57,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:11:57,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:11:48" (1/3) ... [2024-11-19 18:11:57,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d7192e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:11:57, skipping insertion in model container [2024-11-19 18:11:57,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:49" (2/3) ... [2024-11-19 18:11:57,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d7192e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:11:57, skipping insertion in model container [2024-11-19 18:11:57,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:11:57" (3/3) ... [2024-11-19 18:11:57,680 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label16.c [2024-11-19 18:11:57,696 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:11:57,697 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:11:57,796 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:11:57,803 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;@49aa4326, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:11:57,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:11:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 18:11:57,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:11:57,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:11:57,820 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:11:57,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:11:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1644072970, now seen corresponding path program 1 times [2024-11-19 18:11:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:11:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849172543] [2024-11-19 18:11:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:11:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:11:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:11:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:11:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:11:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849172543] [2024-11-19 18:11:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849172543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:11:58,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:11:58,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:11:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081793936] [2024-11-19 18:11:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:11:58,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:11:58,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:11:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:11:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:11:58,160 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:01,985 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2024-11-19 18:12:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:01,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 18:12:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:02,022 INFO L225 Difference]: With dead ends: 3035 [2024-11-19 18:12:02,022 INFO L226 Difference]: Without dead ends: 1873 [2024-11-19 18:12:02,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:02,036 INFO L432 NwaCegarLoop]: 991 mSDtfsCounter, 883 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:02,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-19 18:12:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-19 18:12:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2024-11-19 18:12:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2024-11-19 18:12:02,171 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 22 [2024-11-19 18:12:02,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:02,172 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2024-11-19 18:12:02,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2024-11-19 18:12:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-19 18:12:02,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:02,177 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:02,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:12:02,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:02,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash 209102453, now seen corresponding path program 1 times [2024-11-19 18:12:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:02,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208930200] [2024-11-19 18:12:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:12:02,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208930200] [2024-11-19 18:12:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208930200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:12:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661096320] [2024-11-19 18:12:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:02,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:02,458 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:06,196 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2024-11-19 18:12:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-19 18:12:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:06,209 INFO L225 Difference]: With dead ends: 5317 [2024-11-19 18:12:06,210 INFO L226 Difference]: Without dead ends: 3460 [2024-11-19 18:12:06,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:06,213 INFO L432 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:06,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-19 18:12:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-11-19 18:12:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2024-11-19 18:12:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2024-11-19 18:12:06,270 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 94 [2024-11-19 18:12:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:06,270 INFO L471 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2024-11-19 18:12:06,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2024-11-19 18:12:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 18:12:06,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:06,273 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:06,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:12:06,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:06,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 169265708, now seen corresponding path program 1 times [2024-11-19 18:12:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229163646] [2024-11-19 18:12:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:06,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:12:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229163646] [2024-11-19 18:12:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229163646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671002139] [2024-11-19 18:12:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:06,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:12:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:12:06,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:12:06,869 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:11,550 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2024-11-19 18:12:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:12:11,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-19 18:12:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:11,578 INFO L225 Difference]: With dead ends: 10870 [2024-11-19 18:12:11,579 INFO L226 Difference]: Without dead ends: 7413 [2024-11-19 18:12:11,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:12:11,587 INFO L432 NwaCegarLoop]: 709 mSDtfsCounter, 2582 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:11,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 1003 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-19 18:12:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2024-11-19 18:12:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2024-11-19 18:12:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2698691134799622) internal successors, (9411), 7411 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9411 transitions. [2024-11-19 18:12:11,716 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9411 transitions. Word has length 108 [2024-11-19 18:12:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:11,717 INFO L471 AbstractCegarLoop]: Abstraction has 7412 states and 9411 transitions. [2024-11-19 18:12:11,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9411 transitions. [2024-11-19 18:12:11,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-19 18:12:11,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:11,725 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:11,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:12:11,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 500012194, now seen corresponding path program 1 times [2024-11-19 18:12:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:11,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470773454] [2024-11-19 18:12:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-19 18:12:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470773454] [2024-11-19 18:12:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470773454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:12:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123124114] [2024-11-19 18:12:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:11,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:11,994 INFO L87 Difference]: Start difference. First operand 7412 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:15,389 INFO L93 Difference]: Finished difference Result 20355 states and 26251 transitions. [2024-11-19 18:12:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-11-19 18:12:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:15,423 INFO L225 Difference]: With dead ends: 20355 [2024-11-19 18:12:15,423 INFO L226 Difference]: Without dead ends: 13732 [2024-11-19 18:12:15,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:15,435 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 888 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:15,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 978 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-19 18:12:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13732 states. [2024-11-19 18:12:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13732 to 12937. [2024-11-19 18:12:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12937 states, 12936 states have (on average 1.215213358070501) internal successors, (15720), 12936 states have internal predecessors, (15720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 15720 transitions. [2024-11-19 18:12:15,665 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 15720 transitions. Word has length 189 [2024-11-19 18:12:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:15,666 INFO L471 AbstractCegarLoop]: Abstraction has 12937 states and 15720 transitions. [2024-11-19 18:12:15,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 15720 transitions. [2024-11-19 18:12:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-19 18:12:15,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:15,672 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:15,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:12:15,673 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:15,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1787709102, now seen corresponding path program 1 times [2024-11-19 18:12:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:15,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984248415] [2024-11-19 18:12:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:15,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:12:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984248415] [2024-11-19 18:12:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984248415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:15,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:15,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723651285] [2024-11-19 18:12:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:15,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:15,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:15,912 INFO L87 Difference]: Start difference. First operand 12937 states and 15720 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:19,042 INFO L93 Difference]: Finished difference Result 31392 states and 39119 transitions. [2024-11-19 18:12:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:19,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-19 18:12:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:19,085 INFO L225 Difference]: With dead ends: 31392 [2024-11-19 18:12:19,086 INFO L226 Difference]: Without dead ends: 19244 [2024-11-19 18:12:19,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:19,103 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:19,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-19 18:12:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2024-11-19 18:12:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18447. [2024-11-19 18:12:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18446 states have (on average 1.2024287108316165) internal successors, (22180), 18446 states have internal predecessors, (22180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 22180 transitions. [2024-11-19 18:12:19,384 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 22180 transitions. Word has length 221 [2024-11-19 18:12:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:19,385 INFO L471 AbstractCegarLoop]: Abstraction has 18447 states and 22180 transitions. [2024-11-19 18:12:19,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 22180 transitions. [2024-11-19 18:12:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-19 18:12:19,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:19,391 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:19,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:12:19,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:19,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash 947672488, now seen corresponding path program 1 times [2024-11-19 18:12:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380846459] [2024-11-19 18:12:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-19 18:12:19,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380846459] [2024-11-19 18:12:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380846459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952112757] [2024-11-19 18:12:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:19,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:19,834 INFO L87 Difference]: Start difference. First operand 18447 states and 22180 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:23,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:23,850 INFO L93 Difference]: Finished difference Result 52772 states and 63784 transitions. [2024-11-19 18:12:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-11-19 18:12:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:23,916 INFO L225 Difference]: With dead ends: 52772 [2024-11-19 18:12:23,917 INFO L226 Difference]: Without dead ends: 35114 [2024-11-19 18:12:23,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:23,942 INFO L432 NwaCegarLoop]: 1700 mSDtfsCounter, 951 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:23,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1819 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 3128 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-19 18:12:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35114 states. [2024-11-19 18:12:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35114 to 34274. [2024-11-19 18:12:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34274 states, 34273 states have (on average 1.1858897674554314) internal successors, (40644), 34273 states have internal predecessors, (40644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34274 states to 34274 states and 40644 transitions. [2024-11-19 18:12:24,391 INFO L78 Accepts]: Start accepts. Automaton has 34274 states and 40644 transitions. Word has length 310 [2024-11-19 18:12:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:24,392 INFO L471 AbstractCegarLoop]: Abstraction has 34274 states and 40644 transitions. [2024-11-19 18:12:24,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 34274 states and 40644 transitions. [2024-11-19 18:12:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-19 18:12:24,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:24,398 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:24,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:12:24,399 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:24,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1734427868, now seen corresponding path program 1 times [2024-11-19 18:12:24,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:24,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116889688] [2024-11-19 18:12:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 18:12:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116889688] [2024-11-19 18:12:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116889688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:24,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:24,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062928826] [2024-11-19 18:12:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:24,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:12:24,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:12:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:12:24,671 INFO L87 Difference]: Start difference. First operand 34274 states and 40644 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:31,242 INFO L93 Difference]: Finished difference Result 108144 states and 129355 transitions. [2024-11-19 18:12:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:12:31,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-11-19 18:12:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:31,370 INFO L225 Difference]: With dead ends: 108144 [2024-11-19 18:12:31,371 INFO L226 Difference]: Without dead ends: 74659 [2024-11-19 18:12:31,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:12:31,410 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 1727 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 6796 mSolverCounterSat, 1085 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 7881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 6796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:31,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 846 Invalid, 7881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1085 Valid, 6796 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-19 18:12:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74659 states. [2024-11-19 18:12:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74659 to 74498. [2024-11-19 18:12:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74498 states, 74497 states have (on average 1.170892787629032) internal successors, (87228), 74497 states have internal predecessors, (87228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74498 states to 74498 states and 87228 transitions. [2024-11-19 18:12:32,250 INFO L78 Accepts]: Start accepts. Automaton has 74498 states and 87228 transitions. Word has length 310 [2024-11-19 18:12:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:32,251 INFO L471 AbstractCegarLoop]: Abstraction has 74498 states and 87228 transitions. [2024-11-19 18:12:32,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 74498 states and 87228 transitions. [2024-11-19 18:12:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-11-19 18:12:32,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:32,258 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:32,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:12:32,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:32,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2097221119, now seen corresponding path program 1 times [2024-11-19 18:12:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:32,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878516921] [2024-11-19 18:12:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:32,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-19 18:12:32,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:32,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878516921] [2024-11-19 18:12:32,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878516921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:32,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:32,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:12:32,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771660398] [2024-11-19 18:12:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:32,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:32,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:32,604 INFO L87 Difference]: Start difference. First operand 74498 states and 87228 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:36,676 INFO L93 Difference]: Finished difference Result 160034 states and 187017 transitions. [2024-11-19 18:12:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:36,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-11-19 18:12:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:36,784 INFO L225 Difference]: With dead ends: 160034 [2024-11-19 18:12:36,784 INFO L226 Difference]: Without dead ends: 86325 [2024-11-19 18:12:36,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:36,923 INFO L432 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:36,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-19 18:12:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86325 states. [2024-11-19 18:12:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86325 to 86316. [2024-11-19 18:12:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86316 states, 86315 states have (on average 1.1568672884203208) internal successors, (99855), 86315 states have internal predecessors, (99855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86316 states to 86316 states and 99855 transitions. [2024-11-19 18:12:38,044 INFO L78 Accepts]: Start accepts. Automaton has 86316 states and 99855 transitions. Word has length 348 [2024-11-19 18:12:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:38,045 INFO L471 AbstractCegarLoop]: Abstraction has 86316 states and 99855 transitions. [2024-11-19 18:12:38,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 86316 states and 99855 transitions. [2024-11-19 18:12:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-19 18:12:38,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:38,053 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:38,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:12:38,053 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:38,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2065811671, now seen corresponding path program 1 times [2024-11-19 18:12:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661638678] [2024-11-19 18:12:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 262 proven. 113 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 18:12:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:39,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661638678] [2024-11-19 18:12:39,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661638678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:12:39,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893481279] [2024-11-19 18:12:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:39,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:12:39,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:12:39,657 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) [2024-11-19 18:12:39,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:12:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:39,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:12:39,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:12:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-19 18:12:40,080 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:12:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893481279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:40,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:12:40,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-19 18:12:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475359678] [2024-11-19 18:12:40,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:40,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:40,082 INFO L87 Difference]: Start difference. First operand 86316 states and 99855 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:42,967 INFO L93 Difference]: Finished difference Result 171840 states and 198914 transitions. [2024-11-19 18:12:42,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:42,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-11-19 18:12:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:43,087 INFO L225 Difference]: With dead ends: 171840 [2024-11-19 18:12:43,087 INFO L226 Difference]: Without dead ends: 86313 [2024-11-19 18:12:43,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:43,328 INFO L432 NwaCegarLoop]: 1364 mSDtfsCounter, 1094 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:43,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1446 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-19 18:12:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86313 states. [2024-11-19 18:12:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86313 to 86311. [2024-11-19 18:12:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86311 states, 86310 states have (on average 1.1199397520565404) internal successors, (96662), 86310 states have internal predecessors, (96662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86311 states to 86311 states and 96662 transitions. [2024-11-19 18:12:44,438 INFO L78 Accepts]: Start accepts. Automaton has 86311 states and 96662 transitions. Word has length 377 [2024-11-19 18:12:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:44,439 INFO L471 AbstractCegarLoop]: Abstraction has 86311 states and 96662 transitions. [2024-11-19 18:12:44,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 86311 states and 96662 transitions. [2024-11-19 18:12:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-19 18:12:44,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:44,449 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:44,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:12:44,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:12:44,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:44,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2022662319, now seen corresponding path program 1 times [2024-11-19 18:12:44,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:44,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251257274] [2024-11-19 18:12:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:44,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-19 18:12:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:45,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251257274] [2024-11-19 18:12:45,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251257274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:45,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:45,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:45,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978734280] [2024-11-19 18:12:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:45,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:45,088 INFO L87 Difference]: Start difference. First operand 86311 states and 96662 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:49,334 INFO L93 Difference]: Finished difference Result 198608 states and 224799 transitions. [2024-11-19 18:12:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:49,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2024-11-19 18:12:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:49,465 INFO L225 Difference]: With dead ends: 198608 [2024-11-19 18:12:49,466 INFO L226 Difference]: Without dead ends: 113086 [2024-11-19 18:12:49,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:49,485 INFO L432 NwaCegarLoop]: 828 mSDtfsCounter, 899 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:49,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 913 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-19 18:12:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113086 states. [2024-11-19 18:12:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113086 to 111491. [2024-11-19 18:12:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111491 states, 111490 states have (on average 1.1249977576464256) internal successors, (125426), 111490 states have internal predecessors, (125426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111491 states to 111491 states and 125426 transitions. [2024-11-19 18:12:50,957 INFO L78 Accepts]: Start accepts. Automaton has 111491 states and 125426 transitions. Word has length 378 [2024-11-19 18:12:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:50,958 INFO L471 AbstractCegarLoop]: Abstraction has 111491 states and 125426 transitions. [2024-11-19 18:12:50,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 111491 states and 125426 transitions. [2024-11-19 18:12:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-11-19 18:12:50,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:50,984 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:50,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:12:50,988 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash -351823286, now seen corresponding path program 1 times [2024-11-19 18:12:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:50,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328946276] [2024-11-19 18:12:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:50,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 277 proven. 113 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 18:12:53,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328946276] [2024-11-19 18:12:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328946276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:12:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925655409] [2024-11-19 18:12:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:53,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:12:53,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:12:53,118 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) [2024-11-19 18:12:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:12:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:53,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:12:53,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:12:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-19 18:12:53,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:12:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925655409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:12:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-19 18:12:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310709857] [2024-11-19 18:12:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:53,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:53,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:53,522 INFO L87 Difference]: Start difference. First operand 111491 states and 125426 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:56,748 INFO L93 Difference]: Finished difference Result 217428 states and 246761 transitions. [2024-11-19 18:12:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 452 [2024-11-19 18:12:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:56,880 INFO L225 Difference]: With dead ends: 217428 [2024-11-19 18:12:56,880 INFO L226 Difference]: Without dead ends: 122475 [2024-11-19 18:12:56,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:56,947 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 1138 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:56,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 411 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 18:12:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122475 states. [2024-11-19 18:12:58,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122475 to 122473. [2024-11-19 18:12:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122473 states, 122472 states have (on average 1.1164102815337382) internal successors, (136729), 122472 states have internal predecessors, (136729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122473 states to 122473 states and 136729 transitions. [2024-11-19 18:12:58,484 INFO L78 Accepts]: Start accepts. Automaton has 122473 states and 136729 transitions. Word has length 452 [2024-11-19 18:12:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:58,484 INFO L471 AbstractCegarLoop]: Abstraction has 122473 states and 136729 transitions. [2024-11-19 18:12:58,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 122473 states and 136729 transitions. [2024-11-19 18:12:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-11-19 18:12:58,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:58,496 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:58,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 18:12:58,696 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,SelfDestructingSolverStorable10 [2024-11-19 18:12:58,697 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:58,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -361499736, now seen corresponding path program 1 times [2024-11-19 18:12:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488650772] [2024-11-19 18:12:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-19 18:12:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488650772] [2024-11-19 18:12:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488650772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:59,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34888813] [2024-11-19 18:12:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:59,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:59,082 INFO L87 Difference]: Start difference. First operand 122473 states and 136729 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)