./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label09.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 7e1c4d2c7e091760d0cfd2192761696664946c8a36300f0a25d92c3977c93680 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:37:37,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:37:37,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:37:37,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:37:37,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:37:37,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:37:37,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:37:37,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:37:37,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:37:37,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:37:37,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:37:37,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:37:37,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:37:37,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:37:37,408 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:37:37,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:37:37,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:37:37,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:37:37,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:37:37,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:37:37,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:37:37,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:37:37,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:37:37,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:37:37,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:37:37,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:37:37,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:37:37,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:37:37,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:37:37,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:37:37,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:37:37,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:37:37,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:37:37,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:37:37,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:37:37,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:37:37,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:37:37,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:37:37,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:37:37,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:37:37,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:37:37,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:37:37,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1c4d2c7e091760d0cfd2192761696664946c8a36300f0a25d92c3977c93680 [2024-11-08 11:37:37,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:37:37,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:37:37,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:37:37,655 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:37:37,655 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:37:37,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label09.c [2024-11-08 11:37:39,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:37:39,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:37:39,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label09.c [2024-11-08 11:37:39,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74eba4c6/3072be48ce0c4b3ab702999ac853f550/FLAG11dae1704 [2024-11-08 11:37:39,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74eba4c6/3072be48ce0c4b3ab702999ac853f550 [2024-11-08 11:37:39,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:37:39,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:37:39,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:37:39,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:37:39,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:37:39,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:37:39" (1/1) ... [2024-11-08 11:37:39,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520aac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:39, skipping insertion in model container [2024-11-08 11:37:39,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:37:39" (1/1) ... [2024-11-08 11:37:39,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:37:39,875 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/Problem17_label09.c[1938,1951] [2024-11-08 11:37:40,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:37:40,328 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:37:40,339 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/Problem17_label09.c[1938,1951] [2024-11-08 11:37:40,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:37:40,560 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:37:40,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40 WrapperNode [2024-11-08 11:37:40,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:37:40,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:37:40,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:37:40,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:37:40,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:40,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:40,861 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-08 11:37:40,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:37:40,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:37:40,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:37:40,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:37:40,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:40,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:40,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,096 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]. [2024-11-08 11:37:41,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:37:41,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:37:41,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:37:41,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:37:41,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (1/1) ... [2024-11-08 11:37:41,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:37:41,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:37:41,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 11:37:41,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 11:37:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:37:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:37:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:37:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:37:41,523 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:37:41,525 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:37:43,854 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-08 11:37:43,855 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:37:43,874 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:37:43,875 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:37:43,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:37:43 BoogieIcfgContainer [2024-11-08 11:37:43,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:37:43,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:37:43,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:37:43,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:37:43,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:37:39" (1/3) ... [2024-11-08 11:37:43,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404e618e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:37:43, skipping insertion in model container [2024-11-08 11:37:43,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:37:40" (2/3) ... [2024-11-08 11:37:43,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404e618e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:37:43, skipping insertion in model container [2024-11-08 11:37:43,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:37:43" (3/3) ... [2024-11-08 11:37:43,882 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label09.c [2024-11-08 11:37:43,896 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:37:43,896 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:37:43,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:37:43,958 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;@50c64ac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:37:43,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:37:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2024-11-08 11:37:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 11:37:43,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:43,969 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:43,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:43,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash -569068670, now seen corresponding path program 1 times [2024-11-08 11:37:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853525476] [2024-11-08 11:37:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:44,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853525476] [2024-11-08 11:37:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853525476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:37:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228392195] [2024-11-08 11:37:44,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:44,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:44,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:44,171 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-08 11:37:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:46,352 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-08 11:37:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:46,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-08 11:37:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:46,367 INFO L225 Difference]: With dead ends: 1667 [2024-11-08 11:37:46,367 INFO L226 Difference]: Without dead ends: 998 [2024-11-08 11:37:46,371 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 [2024-11-08 11:37:46,373 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 533 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:46,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:37:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-08 11:37:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-08 11:37:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 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) [2024-11-08 11:37:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-08 11:37:46,435 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 12 [2024-11-08 11:37:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:46,436 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-08 11:37:46,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-08 11:37:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-08 11:37:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 11:37:46,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:46,438 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 11:37:46,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:37:46,438 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:46,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1540663647, now seen corresponding path program 1 times [2024-11-08 11:37:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908539111] [2024-11-08 11:37:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:46,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908539111] [2024-11-08 11:37:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908539111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:46,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:46,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:37:46,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032946081] [2024-11-08 11:37:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:46,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:46,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:46,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:46,643 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:48,420 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-08 11:37:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:48,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-08 11:37:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:48,427 INFO L225 Difference]: With dead ends: 2841 [2024-11-08 11:37:48,427 INFO L226 Difference]: Without dead ends: 1861 [2024-11-08 11:37:48,429 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 [2024-11-08 11:37:48,430 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:48,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 11:37:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-08 11:37:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-08 11:37:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 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) [2024-11-08 11:37:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-08 11:37:48,463 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 77 [2024-11-08 11:37:48,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:48,464 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-08 11:37:48,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:37:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-08 11:37:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 11:37:48,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:48,467 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:48,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:37:48,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:48,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash 463540948, now seen corresponding path program 1 times [2024-11-08 11:37:48,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625554629] [2024-11-08 11:37:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:48,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:48,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:48,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625554629] [2024-11-08 11:37:48,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625554629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:48,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:48,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:37:48,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69412276] [2024-11-08 11:37:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:48,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:48,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:48,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:48,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:48,734 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2024-11-08 11:37:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:50,626 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-08 11:37:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 117 [2024-11-08 11:37:50,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:50,634 INFO L225 Difference]: With dead ends: 4591 [2024-11-08 11:37:50,634 INFO L226 Difference]: Without dead ends: 2736 [2024-11-08 11:37:50,636 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 [2024-11-08 11:37:50,637 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:50,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 11:37:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-08 11:37:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-08 11:37:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 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) [2024-11-08 11:37:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-08 11:37:50,699 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 117 [2024-11-08 11:37:50,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:50,700 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-08 11:37:50,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2024-11-08 11:37:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-08 11:37:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-08 11:37:50,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:50,705 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:50,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:37:50,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:50,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1189236261, now seen corresponding path program 1 times [2024-11-08 11:37:50,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:50,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146846712] [2024-11-08 11:37:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146846712] [2024-11-08 11:37:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146846712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:50,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:37:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219485070] [2024-11-08 11:37:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:50,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:50,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:50,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:50,889 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-08 11:37:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:52,592 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-08 11:37:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:52,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 123 [2024-11-08 11:37:52,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:52,604 INFO L225 Difference]: With dead ends: 6709 [2024-11-08 11:37:52,604 INFO L226 Difference]: Without dead ends: 3995 [2024-11-08 11:37:52,608 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 [2024-11-08 11:37:52,609 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:52,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:37:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-08 11:37:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-08 11:37:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 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) [2024-11-08 11:37:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-08 11:37:52,660 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 123 [2024-11-08 11:37:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:52,661 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-08 11:37:52,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-08 11:37:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-08 11:37:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 11:37:52,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:52,663 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:52,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:37:52,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:52,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash -604395729, now seen corresponding path program 1 times [2024-11-08 11:37:52,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:52,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919470510] [2024-11-08 11:37:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:37:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919470510] [2024-11-08 11:37:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919470510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 11:37:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927484828] [2024-11-08 11:37:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:52,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 11:37:52,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 11:37:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:37:52,954 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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) [2024-11-08 11:37:55,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:55,081 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-08 11:37:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:37:55,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 160 [2024-11-08 11:37:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:55,094 INFO L225 Difference]: With dead ends: 8005 [2024-11-08 11:37:55,094 INFO L226 Difference]: Without dead ends: 4865 [2024-11-08 11:37:55,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:37:55,099 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:55,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:37:55,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-08 11:37:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-08 11:37:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 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) [2024-11-08 11:37:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-08 11:37:55,155 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 160 [2024-11-08 11:37:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:55,155 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-08 11:37:55,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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) [2024-11-08 11:37:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-08 11:37:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-08 11:37:55,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:55,157 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:55,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:37:55,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:55,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash -714630880, now seen corresponding path program 1 times [2024-11-08 11:37:55,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:55,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309732841] [2024-11-08 11:37:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:55,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 11:37:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:55,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309732841] [2024-11-08 11:37:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309732841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213688125] [2024-11-08 11:37:55,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:55,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:55,264 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-08 11:37:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:57,019 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-08 11:37:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 166 [2024-11-08 11:37:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:57,035 INFO L225 Difference]: With dead ends: 12249 [2024-11-08 11:37:57,035 INFO L226 Difference]: Without dead ends: 7399 [2024-11-08 11:37:57,038 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 [2024-11-08 11:37:57,039 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 436 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:57,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 11:37:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-08 11:37:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-08 11:37:57,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 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) [2024-11-08 11:37:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-08 11:37:57,095 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 166 [2024-11-08 11:37:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:57,096 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-08 11:37:57,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-08 11:37:57,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-08 11:37:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-08 11:37:57,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:57,098 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:57,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:37:57,098 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:57,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1628723596, now seen corresponding path program 1 times [2024-11-08 11:37:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:57,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406365061] [2024-11-08 11:37:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:37:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406365061] [2024-11-08 11:37:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406365061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:57,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762236155] [2024-11-08 11:37:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:57,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:57,196 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-08 11:37:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:37:58,825 INFO L93 Difference]: Finished difference Result 12204 states and 15757 transitions. [2024-11-08 11:37:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:37:58,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 179 [2024-11-08 11:37:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:37:58,847 INFO L225 Difference]: With dead ends: 12204 [2024-11-08 11:37:58,847 INFO L226 Difference]: Without dead ends: 7380 [2024-11-08 11:37:58,852 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 [2024-11-08 11:37:58,853 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 460 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:37:58,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 511 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:37:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2024-11-08 11:37:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 6525. [2024-11-08 11:37:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6525 states, 6524 states have (on average 1.2665542611894542) internal successors, (8263), 6524 states have internal predecessors, (8263), 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) [2024-11-08 11:37:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 8263 transitions. [2024-11-08 11:37:58,931 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 8263 transitions. Word has length 179 [2024-11-08 11:37:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:37:58,932 INFO L471 AbstractCegarLoop]: Abstraction has 6525 states and 8263 transitions. [2024-11-08 11:37:58,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-08 11:37:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 8263 transitions. [2024-11-08 11:37:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-08 11:37:58,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:37:58,934 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:37:58,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:37:58,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:37:58,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:37:58,935 INFO L85 PathProgramCache]: Analyzing trace with hash 456712304, now seen corresponding path program 1 times [2024-11-08 11:37:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:37:58,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818809724] [2024-11-08 11:37:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:37:58,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:37:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:37:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:37:59,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:37:59,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818809724] [2024-11-08 11:37:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818809724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:37:59,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:37:59,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:37:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711583308] [2024-11-08 11:37:59,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:37:59,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:37:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:37:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:37:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:37:59,095 INFO L87 Difference]: Start difference. First operand 6525 states and 8263 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-08 11:38:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:01,009 INFO L93 Difference]: Finished difference Result 17751 states and 22351 transitions. [2024-11-08 11:38:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:01,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 228 [2024-11-08 11:38:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:01,029 INFO L225 Difference]: With dead ends: 17751 [2024-11-08 11:38:01,029 INFO L226 Difference]: Without dead ends: 9951 [2024-11-08 11:38:01,037 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 [2024-11-08 11:38:01,038 INFO L432 NwaCegarLoop]: 946 mSDtfsCounter, 488 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:01,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1019 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 11:38:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2024-11-08 11:38:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 9943. [2024-11-08 11:38:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9943 states, 9942 states have (on average 1.208006437336552) internal successors, (12010), 9942 states have internal predecessors, (12010), 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) [2024-11-08 11:38:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9943 states to 9943 states and 12010 transitions. [2024-11-08 11:38:01,134 INFO L78 Accepts]: Start accepts. Automaton has 9943 states and 12010 transitions. Word has length 228 [2024-11-08 11:38:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:01,134 INFO L471 AbstractCegarLoop]: Abstraction has 9943 states and 12010 transitions. [2024-11-08 11:38:01,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-08 11:38:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9943 states and 12010 transitions. [2024-11-08 11:38:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-08 11:38:01,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:01,137 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:01,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:38:01,137 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:01,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1907858662, now seen corresponding path program 1 times [2024-11-08 11:38:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724650268] [2024-11-08 11:38:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:01,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:38:01,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724650268] [2024-11-08 11:38:01,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724650268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:01,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:01,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564441327] [2024-11-08 11:38:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:01,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:01,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:01,346 INFO L87 Difference]: Start difference. First operand 9943 states and 12010 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-08 11:38:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:03,229 INFO L93 Difference]: Finished difference Result 20736 states and 24968 transitions. [2024-11-08 11:38:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:03,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 232 [2024-11-08 11:38:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:03,246 INFO L225 Difference]: With dead ends: 20736 [2024-11-08 11:38:03,247 INFO L226 Difference]: Without dead ends: 10795 [2024-11-08 11:38:03,255 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 [2024-11-08 11:38:03,257 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 418 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:03,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 985 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 11:38:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2024-11-08 11:38:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 10369. [2024-11-08 11:38:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10369 states, 10368 states have (on average 1.2040895061728396) internal successors, (12484), 10368 states have internal predecessors, (12484), 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) [2024-11-08 11:38:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10369 states to 10369 states and 12484 transitions. [2024-11-08 11:38:03,390 INFO L78 Accepts]: Start accepts. Automaton has 10369 states and 12484 transitions. Word has length 232 [2024-11-08 11:38:03,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:03,390 INFO L471 AbstractCegarLoop]: Abstraction has 10369 states and 12484 transitions. [2024-11-08 11:38:03,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-08 11:38:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 10369 states and 12484 transitions. [2024-11-08 11:38:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-08 11:38:03,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:03,394 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:03,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 11:38:03,394 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:03,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash 724784780, now seen corresponding path program 1 times [2024-11-08 11:38:03,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:03,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664889369] [2024-11-08 11:38:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 158 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 11:38:03,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:03,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664889369] [2024-11-08 11:38:03,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664889369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:03,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794800125] [2024-11-08 11:38:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:03,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:38:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:38:03,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:38:03,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:38:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:03,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:38:03,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:38:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 158 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 11:38:03,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:38:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 11:38:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794800125] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:04,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:38:04,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-08 11:38:04,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724594715] [2024-11-08 11:38:04,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:04,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:38:04,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:38:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:38:04,286 INFO L87 Difference]: Start difference. First operand 10369 states and 12484 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-11-08 11:38:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:07,151 INFO L93 Difference]: Finished difference Result 30985 states and 37761 transitions. [2024-11-08 11:38:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:38:07,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 236 [2024-11-08 11:38:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:07,178 INFO L225 Difference]: With dead ends: 30985 [2024-11-08 11:38:07,179 INFO L226 Difference]: Without dead ends: 19753 [2024-11-08 11:38:07,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:38:07,188 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 908 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:07,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 157 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:38:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19753 states. [2024-11-08 11:38:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19753 to 19752. [2024-11-08 11:38:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19752 states, 19751 states have (on average 1.158321097665941) internal successors, (22878), 19751 states have internal predecessors, (22878), 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) [2024-11-08 11:38:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19752 states to 19752 states and 22878 transitions. [2024-11-08 11:38:07,357 INFO L78 Accepts]: Start accepts. Automaton has 19752 states and 22878 transitions. Word has length 236 [2024-11-08 11:38:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:07,358 INFO L471 AbstractCegarLoop]: Abstraction has 19752 states and 22878 transitions. [2024-11-08 11:38:07,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-11-08 11:38:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 19752 states and 22878 transitions. [2024-11-08 11:38:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-08 11:38:07,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:07,361 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:07,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:38:07,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 11:38:07,565 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:07,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1956249984, now seen corresponding path program 1 times [2024-11-08 11:38:07,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:07,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841456768] [2024-11-08 11:38:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 11:38:07,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:07,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841456768] [2024-11-08 11:38:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841456768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114402908] [2024-11-08 11:38:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:07,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:07,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:07,673 INFO L87 Difference]: Start difference. First operand 19752 states and 22878 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-08 11:38:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:09,097 INFO L93 Difference]: Finished difference Result 42479 states and 49308 transitions. [2024-11-08 11:38:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:09,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 249 [2024-11-08 11:38:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:09,123 INFO L225 Difference]: With dead ends: 42479 [2024-11-08 11:38:09,123 INFO L226 Difference]: Without dead ends: 22729 [2024-11-08 11:38:09,139 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 [2024-11-08 11:38:09,139 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 378 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:09,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 856 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 11:38:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22729 states. [2024-11-08 11:38:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22729 to 22303. [2024-11-08 11:38:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22303 states, 22302 states have (on average 1.1478342749529191) internal successors, (25599), 22302 states have internal predecessors, (25599), 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) [2024-11-08 11:38:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22303 states to 22303 states and 25599 transitions. [2024-11-08 11:38:09,415 INFO L78 Accepts]: Start accepts. Automaton has 22303 states and 25599 transitions. Word has length 249 [2024-11-08 11:38:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:09,415 INFO L471 AbstractCegarLoop]: Abstraction has 22303 states and 25599 transitions. [2024-11-08 11:38:09,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-08 11:38:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 22303 states and 25599 transitions. [2024-11-08 11:38:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-08 11:38:09,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:09,418 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:38:09,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:38:09,419 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:09,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash 360694187, now seen corresponding path program 1 times [2024-11-08 11:38:09,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:09,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288787011] [2024-11-08 11:38:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:09,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 11:38:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288787011] [2024-11-08 11:38:09,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288787011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:09,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:09,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 11:38:09,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691972938] [2024-11-08 11:38:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:09,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:38:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:38:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:38:09,655 INFO L87 Difference]: Start difference. First operand 22303 states and 25599 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-11-08 11:38:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:12,404 INFO L93 Difference]: Finished difference Result 56130 states and 65063 transitions. [2024-11-08 11:38:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:38:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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 272 [2024-11-08 11:38:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:12,449 INFO L225 Difference]: With dead ends: 56130 [2024-11-08 11:38:12,449 INFO L226 Difference]: Without dead ends: 30848 [2024-11-08 11:38:12,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:38:12,461 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 891 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:12,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 374 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 11:38:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30848 states. [2024-11-08 11:38:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30848 to 29526. [2024-11-08 11:38:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29526 states, 29525 states have (on average 1.159424216765453) internal successors, (34232), 29525 states have internal predecessors, (34232), 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) [2024-11-08 11:38:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29526 states to 29526 states and 34232 transitions. [2024-11-08 11:38:12,723 INFO L78 Accepts]: Start accepts. Automaton has 29526 states and 34232 transitions. Word has length 272 [2024-11-08 11:38:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:12,724 INFO L471 AbstractCegarLoop]: Abstraction has 29526 states and 34232 transitions. [2024-11-08 11:38:12,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-11-08 11:38:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29526 states and 34232 transitions. [2024-11-08 11:38:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-08 11:38:12,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:12,728 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:38:12,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:38:12,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:12,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:12,728 INFO L85 PathProgramCache]: Analyzing trace with hash 716024662, now seen corresponding path program 1 times [2024-11-08 11:38:12,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081305781] [2024-11-08 11:38:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 11:38:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:12,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081305781] [2024-11-08 11:38:12,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081305781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:12,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:12,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286863828] [2024-11-08 11:38:12,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:12,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:12,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:12,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:12,943 INFO L87 Difference]: Start difference. First operand 29526 states and 34232 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2024-11-08 11:38:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:14,631 INFO L93 Difference]: Finished difference Result 74398 states and 86009 transitions. [2024-11-08 11:38:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:14,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 287 [2024-11-08 11:38:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:14,680 INFO L225 Difference]: With dead ends: 74398 [2024-11-08 11:38:14,681 INFO L226 Difference]: Without dead ends: 41896 [2024-11-08 11:38:14,702 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 [2024-11-08 11:38:14,703 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 363 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:14,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 808 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 11:38:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41896 states. [2024-11-08 11:38:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41896 to 41037. [2024-11-08 11:38:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41037 states, 41036 states have (on average 1.1224047178087533) internal successors, (46059), 41036 states have internal predecessors, (46059), 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) [2024-11-08 11:38:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41037 states to 41037 states and 46059 transitions. [2024-11-08 11:38:15,110 INFO L78 Accepts]: Start accepts. Automaton has 41037 states and 46059 transitions. Word has length 287 [2024-11-08 11:38:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:15,111 INFO L471 AbstractCegarLoop]: Abstraction has 41037 states and 46059 transitions. [2024-11-08 11:38:15,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2024-11-08 11:38:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 41037 states and 46059 transitions. [2024-11-08 11:38:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-08 11:38:15,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:15,116 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:15,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 11:38:15,116 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:15,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 541840298, now seen corresponding path program 1 times [2024-11-08 11:38:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:15,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423054379] [2024-11-08 11:38:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 238 proven. 214 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 11:38:15,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:15,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423054379] [2024-11-08 11:38:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423054379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:15,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107287065] [2024-11-08 11:38:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:15,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:38:15,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:38:15,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:38:15,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:38:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:15,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 11:38:15,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:38:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 299 proven. 73 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 11:38:15,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:38:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 11:38:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107287065] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:38:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-08 11:38:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613379831] [2024-11-08 11:38:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:15,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:38:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:38:15,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:38:15,945 INFO L87 Difference]: Start difference. First operand 41037 states and 46059 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-11-08 11:38:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:18,406 INFO L93 Difference]: Finished difference Result 97844 states and 109929 transitions. [2024-11-08 11:38:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:38:18,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 [2024-11-08 11:38:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:18,468 INFO L225 Difference]: With dead ends: 97844 [2024-11-08 11:38:18,468 INFO L226 Difference]: Without dead ends: 56809 [2024-11-08 11:38:18,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:38:18,523 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 850 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:18,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 201 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 11:38:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56809 states. [2024-11-08 11:38:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56809 to 53829. [2024-11-08 11:38:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53829 states, 53828 states have (on average 1.126216838819945) internal successors, (60622), 53828 states have internal predecessors, (60622), 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) [2024-11-08 11:38:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53829 states to 53829 states and 60622 transitions. [2024-11-08 11:38:19,222 INFO L78 Accepts]: Start accepts. Automaton has 53829 states and 60622 transitions. Word has length 310 [2024-11-08 11:38:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:19,223 INFO L471 AbstractCegarLoop]: Abstraction has 53829 states and 60622 transitions. [2024-11-08 11:38:19,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-11-08 11:38:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 53829 states and 60622 transitions. [2024-11-08 11:38:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-08 11:38:19,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:19,226 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:38:19,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:38:19,429 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,SelfDestructingSolverStorable13 [2024-11-08 11:38:19,429 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:19,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2012085875, now seen corresponding path program 1 times [2024-11-08 11:38:19,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:19,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646274174] [2024-11-08 11:38:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:19,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-08 11:38:19,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:19,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646274174] [2024-11-08 11:38:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646274174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:19,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:19,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:19,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518924541] [2024-11-08 11:38:19,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:19,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:19,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:19,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:19,618 INFO L87 Difference]: Start difference. First operand 53829 states and 60622 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-11-08 11:38:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:21,316 INFO L93 Difference]: Finished difference Result 115335 states and 130060 transitions. [2024-11-08 11:38:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 324 [2024-11-08 11:38:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:21,382 INFO L225 Difference]: With dead ends: 115335 [2024-11-08 11:38:21,382 INFO L226 Difference]: Without dead ends: 61078 [2024-11-08 11:38:21,419 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 [2024-11-08 11:38:21,420 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 504 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:21,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 310 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 11:38:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61078 states. [2024-11-08 11:38:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61078 to 59370. [2024-11-08 11:38:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59370 states, 59369 states have (on average 1.1245262679176) internal successors, (66762), 59369 states have internal predecessors, (66762), 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) [2024-11-08 11:38:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59370 states to 59370 states and 66762 transitions. [2024-11-08 11:38:22,405 INFO L78 Accepts]: Start accepts. Automaton has 59370 states and 66762 transitions. Word has length 324 [2024-11-08 11:38:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:22,406 INFO L471 AbstractCegarLoop]: Abstraction has 59370 states and 66762 transitions. [2024-11-08 11:38:22,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-11-08 11:38:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 59370 states and 66762 transitions. [2024-11-08 11:38:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-08 11:38:22,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:22,410 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:38:22,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 11:38:22,410 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:22,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1022421116, now seen corresponding path program 1 times [2024-11-08 11:38:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:22,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739011927] [2024-11-08 11:38:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:22,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-08 11:38:22,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:22,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739011927] [2024-11-08 11:38:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739011927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:22,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:22,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:22,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542498247] [2024-11-08 11:38:22,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:22,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:22,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:22,866 INFO L87 Difference]: Start difference. First operand 59370 states and 66762 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2024-11-08 11:38:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:24,764 INFO L93 Difference]: Finished difference Result 134905 states and 151659 transitions. [2024-11-08 11:38:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 340 [2024-11-08 11:38:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:24,843 INFO L225 Difference]: With dead ends: 134905 [2024-11-08 11:38:24,843 INFO L226 Difference]: Without dead ends: 72558 [2024-11-08 11:38:24,860 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 [2024-11-08 11:38:24,861 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 383 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:24,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 834 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 11:38:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72558 states. [2024-11-08 11:38:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72558 to 61033. [2024-11-08 11:38:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61033 states, 61032 states have (on average 1.1192489186000787) internal successors, (68310), 61032 states have internal predecessors, (68310), 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) [2024-11-08 11:38:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61033 states to 61033 states and 68310 transitions. [2024-11-08 11:38:25,719 INFO L78 Accepts]: Start accepts. Automaton has 61033 states and 68310 transitions. Word has length 340 [2024-11-08 11:38:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:25,720 INFO L471 AbstractCegarLoop]: Abstraction has 61033 states and 68310 transitions. [2024-11-08 11:38:25,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2024-11-08 11:38:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 61033 states and 68310 transitions. [2024-11-08 11:38:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-08 11:38:25,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:25,723 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:25,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 11:38:25,723 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:25,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash 4203890, now seen corresponding path program 1 times [2024-11-08 11:38:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:25,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707481256] [2024-11-08 11:38:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:25,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-08 11:38:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707481256] [2024-11-08 11:38:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707481256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:26,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:26,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058687053] [2024-11-08 11:38:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:26,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:26,026 INFO L87 Difference]: Start difference. First operand 61033 states and 68310 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-08 11:38:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:27,933 INFO L93 Difference]: Finished difference Result 137375 states and 153487 transitions. [2024-11-08 11:38:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 345 [2024-11-08 11:38:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:28,017 INFO L225 Difference]: With dead ends: 137375 [2024-11-08 11:38:28,017 INFO L226 Difference]: Without dead ends: 71232 [2024-11-08 11:38:28,053 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 [2024-11-08 11:38:28,056 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 482 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:28,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 724 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 11:38:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71232 states. [2024-11-08 11:38:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71232 to 71223. [2024-11-08 11:38:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71223 states, 71222 states have (on average 1.0991968773693521) internal successors, (78287), 71222 states have internal predecessors, (78287), 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) [2024-11-08 11:38:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71223 states to 71223 states and 78287 transitions. [2024-11-08 11:38:29,057 INFO L78 Accepts]: Start accepts. Automaton has 71223 states and 78287 transitions. Word has length 345 [2024-11-08 11:38:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:29,057 INFO L471 AbstractCegarLoop]: Abstraction has 71223 states and 78287 transitions. [2024-11-08 11:38:29,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-08 11:38:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 71223 states and 78287 transitions. [2024-11-08 11:38:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-08 11:38:29,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:29,066 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:29,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 11:38:29,070 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:29,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1918113595, now seen corresponding path program 1 times [2024-11-08 11:38:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:29,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412657420] [2024-11-08 11:38:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:29,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 11:38:29,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:29,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412657420] [2024-11-08 11:38:29,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412657420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:29,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:29,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:29,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146299845] [2024-11-08 11:38:29,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:29,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:29,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:29,468 INFO L87 Difference]: Start difference. First operand 71223 states and 78287 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-11-08 11:38:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:31,233 INFO L93 Difference]: Finished difference Result 157773 states and 173760 transitions. [2024-11-08 11:38:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 358 [2024-11-08 11:38:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:31,332 INFO L225 Difference]: With dead ends: 157773 [2024-11-08 11:38:31,333 INFO L226 Difference]: Without dead ends: 86552 [2024-11-08 11:38:31,363 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 [2024-11-08 11:38:31,364 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 412 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:31,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 299 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 11:38:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86552 states. [2024-11-08 11:38:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86552 to 79305. [2024-11-08 11:38:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79305 states, 79304 states have (on average 1.0928956925249673) internal successors, (86671), 79304 states have internal predecessors, (86671), 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) [2024-11-08 11:38:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79305 states to 79305 states and 86671 transitions. [2024-11-08 11:38:32,749 INFO L78 Accepts]: Start accepts. Automaton has 79305 states and 86671 transitions. Word has length 358 [2024-11-08 11:38:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:32,750 INFO L471 AbstractCegarLoop]: Abstraction has 79305 states and 86671 transitions. [2024-11-08 11:38:32,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-11-08 11:38:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 79305 states and 86671 transitions. [2024-11-08 11:38:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-08 11:38:32,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:32,754 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:32,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 11:38:32,755 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:32,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:32,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1419132856, now seen corresponding path program 1 times [2024-11-08 11:38:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:32,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124420627] [2024-11-08 11:38:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:32,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 244 proven. 10 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-08 11:38:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124420627] [2024-11-08 11:38:33,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124420627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:33,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684196816] [2024-11-08 11:38:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:33,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:38:33,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:38:33,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:38:33,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:38:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:33,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 11:38:33,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:38:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 349 proven. 82 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 11:38:33,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:38:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 349 proven. 82 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 11:38:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684196816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:38:34,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:38:34,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-08 11:38:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491741471] [2024-11-08 11:38:34,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:38:34,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 11:38:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 11:38:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:38:34,707 INFO L87 Difference]: Start difference. First operand 79305 states and 86671 transitions. Second operand has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2024-11-08 11:38:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:43,954 INFO L93 Difference]: Finished difference Result 207161 states and 225176 transitions. [2024-11-08 11:38:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 11:38:43,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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 392 [2024-11-08 11:38:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:44,147 INFO L225 Difference]: With dead ends: 207161 [2024-11-08 11:38:44,147 INFO L226 Difference]: Without dead ends: 123606 [2024-11-08 11:38:44,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-08 11:38:44,180 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 7088 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 11331 mSolverCounterSat, 1598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7088 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 12929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 11331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:44,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7088 Valid, 376 Invalid, 12929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1598 Valid, 11331 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-08 11:38:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123606 states. [2024-11-08 11:38:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123606 to 106926. [2024-11-08 11:38:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106926 states, 106925 states have (on average 1.0724526537292496) internal successors, (114672), 106925 states have internal predecessors, (114672), 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) [2024-11-08 11:38:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106926 states to 106926 states and 114672 transitions. [2024-11-08 11:38:45,932 INFO L78 Accepts]: Start accepts. Automaton has 106926 states and 114672 transitions. Word has length 392 [2024-11-08 11:38:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:45,933 INFO L471 AbstractCegarLoop]: Abstraction has 106926 states and 114672 transitions. [2024-11-08 11:38:45,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2024-11-08 11:38:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 106926 states and 114672 transitions. [2024-11-08 11:38:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-08 11:38:45,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:45,941 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:45,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 11:38:46,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:38:46,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:46,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1187910031, now seen corresponding path program 1 times [2024-11-08 11:38:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:46,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045057899] [2024-11-08 11:38:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:46,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-08 11:38:46,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:46,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045057899] [2024-11-08 11:38:46,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045057899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:38:46,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:38:46,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:38:46,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791215375] [2024-11-08 11:38:46,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:38:46,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:38:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:46,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:38:46,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:38:46,381 INFO L87 Difference]: Start difference. First operand 106926 states and 114672 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-11-08 11:38:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:48,365 INFO L93 Difference]: Finished difference Result 215982 states and 231526 transitions. [2024-11-08 11:38:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:38:48,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 478 [2024-11-08 11:38:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:48,498 INFO L225 Difference]: With dead ends: 215982 [2024-11-08 11:38:48,499 INFO L226 Difference]: Without dead ends: 109058 [2024-11-08 11:38:48,850 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 [2024-11-08 11:38:48,851 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 432 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:48,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 366 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 11:38:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109058 states. [2024-11-08 11:38:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109058 to 108203. [2024-11-08 11:38:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108203 states, 108202 states have (on average 1.0677529066006173) internal successors, (115533), 108202 states have internal predecessors, (115533), 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) [2024-11-08 11:38:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108203 states to 108203 states and 115533 transitions. [2024-11-08 11:38:50,052 INFO L78 Accepts]: Start accepts. Automaton has 108203 states and 115533 transitions. Word has length 478 [2024-11-08 11:38:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:38:50,055 INFO L471 AbstractCegarLoop]: Abstraction has 108203 states and 115533 transitions. [2024-11-08 11:38:50,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-11-08 11:38:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 108203 states and 115533 transitions. [2024-11-08 11:38:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-08 11:38:50,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:38:50,066 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:38:50,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 11:38:50,066 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:38:50,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:38:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash -465471891, now seen corresponding path program 1 times [2024-11-08 11:38:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:38:50,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217435816] [2024-11-08 11:38:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:38:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 373 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 11:38:51,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:38:51,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217435816] [2024-11-08 11:38:51,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217435816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:38:51,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810275451] [2024-11-08 11:38:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:38:51,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:38:51,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:38:51,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:38:51,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 11:38:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:38:51,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 11:38:51,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:38:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 373 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 11:38:52,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:38:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 454 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 11:38:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810275451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 11:38:53,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 11:38:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-08 11:38:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529544912] [2024-11-08 11:38:53,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 11:38:53,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 11:38:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:38:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 11:38:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 11:38:53,304 INFO L87 Difference]: Start difference. First operand 108203 states and 115533 transitions. Second operand has 10 states, 10 states have (on average 75.0) internal successors, (750), 9 states have internal predecessors, (750), 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) [2024-11-08 11:38:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:38:58,417 INFO L93 Difference]: Finished difference Result 228581 states and 244045 transitions. [2024-11-08 11:38:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 11:38:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 75.0) internal successors, (750), 9 states have internal predecessors, (750), 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 500 [2024-11-08 11:38:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:38:58,552 INFO L225 Difference]: With dead ends: 228581 [2024-11-08 11:38:58,553 INFO L226 Difference]: Without dead ends: 120805 [2024-11-08 11:38:58,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-08 11:38:58,613 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 2557 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 7683 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 8482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 7683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:38:58,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 459 Invalid, 8482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 7683 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 11:38:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120805 states. [2024-11-08 11:38:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120805 to 105222. [2024-11-08 11:39:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105222 states, 105221 states have (on average 1.0678381691867593) internal successors, (112359), 105221 states have internal predecessors, (112359), 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) [2024-11-08 11:39:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105222 states to 105222 states and 112359 transitions. [2024-11-08 11:39:00,140 INFO L78 Accepts]: Start accepts. Automaton has 105222 states and 112359 transitions. Word has length 500 [2024-11-08 11:39:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:39:00,141 INFO L471 AbstractCegarLoop]: Abstraction has 105222 states and 112359 transitions. [2024-11-08 11:39:00,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.0) internal successors, (750), 9 states have internal predecessors, (750), 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) [2024-11-08 11:39:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 105222 states and 112359 transitions. [2024-11-08 11:39:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2024-11-08 11:39:00,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:39:00,149 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:39:00,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 11:39:00,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:39:00,350 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:39:00,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:39:00,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1861228897, now seen corresponding path program 1 times [2024-11-08 11:39:00,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:39:00,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715802197] [2024-11-08 11:39:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:39:00,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:39:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:39:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 346 proven. 72 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 11:39:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:39:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715802197] [2024-11-08 11:39:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715802197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:39:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658115968] [2024-11-08 11:39:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:39:01,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:39:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:39:01,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:39:01,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 11:39:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:39:01,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 11:39:01,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:39:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 244 proven. 10 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 11:39:01,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 11:39:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 11:39:01,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658115968] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 11:39:01,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 11:39:01,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-08 11:39:01,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400232755] [2024-11-08 11:39:01,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:39:01,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:39:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:39:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:39:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:39:01,638 INFO L87 Difference]: Start difference. First operand 105222 states and 112359 transitions. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2024-11-08 11:39:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:39:04,587 INFO L93 Difference]: Finished difference Result 223651 states and 238739 transitions. [2024-11-08 11:39:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:39:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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 579 [2024-11-08 11:39:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:39:04,726 INFO L225 Difference]: With dead ends: 223651 [2024-11-08 11:39:04,727 INFO L226 Difference]: Without dead ends: 118006 [2024-11-08 11:39:04,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1154 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 11:39:04,797 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 989 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:39:04,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 155 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:39:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118006 states. [2024-11-08 11:39:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118006 to 112889. [2024-11-08 11:39:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112889 states, 112888 states have (on average 1.069041882219545) internal successors, (120682), 112888 states have internal predecessors, (120682), 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) [2024-11-08 11:39:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112889 states to 112889 states and 120682 transitions. [2024-11-08 11:39:06,470 INFO L78 Accepts]: Start accepts. Automaton has 112889 states and 120682 transitions. Word has length 579 [2024-11-08 11:39:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:39:06,470 INFO L471 AbstractCegarLoop]: Abstraction has 112889 states and 120682 transitions. [2024-11-08 11:39:06,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2024-11-08 11:39:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 112889 states and 120682 transitions. [2024-11-08 11:39:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-08 11:39:06,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:39:06,486 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:39:06,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 11:39:06,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 11:39:06,689 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:39:06,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:39:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1077603837, now seen corresponding path program 1 times [2024-11-08 11:39:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:39:06,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480752297] [2024-11-08 11:39:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:39:06,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:39:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:39:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 11:39:07,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:39:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480752297] [2024-11-08 11:39:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480752297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:39:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:39:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:39:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713009582] [2024-11-08 11:39:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:39:07,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:39:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:39:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:39:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:39:07,346 INFO L87 Difference]: Start difference. First operand 112889 states and 120682 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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)