./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.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 8e8985b7b99a6dec53be0ba16cc0e7b241934830d919fef1f601cc1b51084525 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:06:02,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:06:02,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:06:02,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:06:02,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:06:02,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:06:02,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:06:02,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:06:02,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:06:02,614 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:06:02,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:06:02,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:06:02,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:06:02,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:06:02,619 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:06:02,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:06:02,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:06:02,620 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:06:02,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:06:02,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:06:02,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:06:02,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:06:02,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:06:02,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:06:02,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:06:02,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:06:02,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:06:02,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:06:02,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:06:02,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:06:02,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:06:02,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:06:02,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:06:02,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:06:02,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:06:02,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:06:02,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:06:02,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:06:02,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:06:02,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:06:02,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:06:02,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:06:02,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e8985b7b99a6dec53be0ba16cc0e7b241934830d919fef1f601cc1b51084525 [2024-11-18 15:06:02,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:06:02,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:06:02,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:06:02,824 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:06:02,824 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:06:02,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-18 15:06:03,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:06:04,138 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:06:04,138 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-18 15:06:04,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329b4ddd1/142fa83208244f739cd5194bcab8db9f/FLAG1c4ae9543 [2024-11-18 15:06:04,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329b4ddd1/142fa83208244f739cd5194bcab8db9f [2024-11-18 15:06:04,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:06:04,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:06:04,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:06:04,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:06:04,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:06:04,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5ca3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04, skipping insertion in model container [2024-11-18 15:06:04,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,576 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:06:04,738 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/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4900,4913] [2024-11-18 15:06:04,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:06:04,814 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:06:04,852 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/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4900,4913] [2024-11-18 15:06:04,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:06:04,888 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:06:04,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04 WrapperNode [2024-11-18 15:06:04,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:06:04,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:06:04,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:06:04,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:06:04,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,925 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 374 [2024-11-18 15:06:04,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:06:04,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:06:04,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:06:04,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:06:04,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,956 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]. [2024-11-18 15:06:04,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:06:04,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:06:04,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:06:04,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:06:04,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (1/1) ... [2024-11-18 15:06:04,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:06:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:06:05,001 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) [2024-11-18 15:06:05,003 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 [2024-11-18 15:06:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:06:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:06:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:06:05,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:06:05,129 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:06:05,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:06:05,471 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-18 15:06:05,471 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:06:05,484 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:06:05,484 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:06:05,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:06:05 BoogieIcfgContainer [2024-11-18 15:06:05,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:06:05,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:06:05,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:06:05,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:06:05,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:06:04" (1/3) ... [2024-11-18 15:06:05,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e85dbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:06:05, skipping insertion in model container [2024-11-18 15:06:05,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:06:04" (2/3) ... [2024-11-18 15:06:05,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e85dbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:06:05, skipping insertion in model container [2024-11-18 15:06:05,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:06:05" (3/3) ... [2024-11-18 15:06:05,492 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-18 15:06:05,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:06:05,505 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:06:05,559 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:06:05,564 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;@5fab5ab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:06:05,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:06:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 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) [2024-11-18 15:06:05,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 15:06:05,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:05,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:05,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:05,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -347547403, now seen corresponding path program 1 times [2024-11-18 15:06:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:05,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570540117] [2024-11-18 15:06:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:05,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:05,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570540117] [2024-11-18 15:06:05,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570540117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:05,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:05,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534448899] [2024-11-18 15:06:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:05,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:05,925 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 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 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-18 15:06:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:05,972 INFO L93 Difference]: Finished difference Result 177 states and 286 transitions. [2024-11-18 15:06:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2024-11-18 15:06:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:05,981 INFO L225 Difference]: With dead ends: 177 [2024-11-18 15:06:05,981 INFO L226 Difference]: Without dead ends: 118 [2024-11-18 15:06:05,983 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 [2024-11-18 15:06:05,985 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:05,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-18 15:06:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-11-18 15:06:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 115 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) [2024-11-18 15:06:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 169 transitions. [2024-11-18 15:06:06,014 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 169 transitions. Word has length 47 [2024-11-18 15:06:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:06,014 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 169 transitions. [2024-11-18 15:06:06,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-18 15:06:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 169 transitions. [2024-11-18 15:06:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 15:06:06,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:06,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:06,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:06:06,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:06,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:06,016 INFO L85 PathProgramCache]: Analyzing trace with hash -391185874, now seen corresponding path program 1 times [2024-11-18 15:06:06,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:06,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444613393] [2024-11-18 15:06:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:06,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444613393] [2024-11-18 15:06:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444613393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:06,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:06,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072160138] [2024-11-18 15:06:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:06,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:06,150 INFO L87 Difference]: Start difference. First operand 116 states and 169 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-18 15:06:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:06,172 INFO L93 Difference]: Finished difference Result 280 states and 429 transitions. [2024-11-18 15:06:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-11-18 15:06:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:06,175 INFO L225 Difference]: With dead ends: 280 [2024-11-18 15:06:06,175 INFO L226 Difference]: Without dead ends: 190 [2024-11-18 15:06:06,176 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 [2024-11-18 15:06:06,177 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:06,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-18 15:06:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-11-18 15:06:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5133689839572193) internal successors, (283), 187 states have internal predecessors, (283), 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) [2024-11-18 15:06:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 283 transitions. [2024-11-18 15:06:06,193 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 283 transitions. Word has length 48 [2024-11-18 15:06:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:06,193 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 283 transitions. [2024-11-18 15:06:06,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-18 15:06:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 283 transitions. [2024-11-18 15:06:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-18 15:06:06,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:06,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:06,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:06:06,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:06,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2047730124, now seen corresponding path program 1 times [2024-11-18 15:06:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825146529] [2024-11-18 15:06:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:06,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:06,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825146529] [2024-11-18 15:06:06,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825146529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:06,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:06,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:06,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266323058] [2024-11-18 15:06:06,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:06,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:06,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:06,275 INFO L87 Difference]: Start difference. First operand 188 states and 283 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-18 15:06:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:06,306 INFO L93 Difference]: Finished difference Result 480 states and 745 transitions. [2024-11-18 15:06:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:06,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-18 15:06:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:06,308 INFO L225 Difference]: With dead ends: 480 [2024-11-18 15:06:06,308 INFO L226 Difference]: Without dead ends: 318 [2024-11-18 15:06:06,308 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 [2024-11-18 15:06:06,309 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:06,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-18 15:06:06,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2024-11-18 15:06:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.5333333333333334) internal successors, (483), 315 states have internal predecessors, (483), 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) [2024-11-18 15:06:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 483 transitions. [2024-11-18 15:06:06,331 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 483 transitions. Word has length 49 [2024-11-18 15:06:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:06,331 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 483 transitions. [2024-11-18 15:06:06,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-18 15:06:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 483 transitions. [2024-11-18 15:06:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 15:06:06,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:06,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:06,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:06:06,333 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:06,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash -415311335, now seen corresponding path program 1 times [2024-11-18 15:06:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:06,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323200400] [2024-11-18 15:06:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:06,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:06,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:06,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323200400] [2024-11-18 15:06:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323200400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:06,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:06,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267479257] [2024-11-18 15:06:06,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:06,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:06,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:06,406 INFO L87 Difference]: Start difference. First operand 316 states and 483 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-18 15:06:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:06,428 INFO L93 Difference]: Finished difference Result 832 states and 1293 transitions. [2024-11-18 15:06:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2024-11-18 15:06:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:06,432 INFO L225 Difference]: With dead ends: 832 [2024-11-18 15:06:06,432 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 15:06:06,433 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 [2024-11-18 15:06:06,436 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:06,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 229 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 15:06:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2024-11-18 15:06:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.5343228200371057) internal successors, (827), 539 states have internal predecessors, (827), 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) [2024-11-18 15:06:06,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 827 transitions. [2024-11-18 15:06:06,457 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 827 transitions. Word has length 50 [2024-11-18 15:06:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:06,457 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 827 transitions. [2024-11-18 15:06:06,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-18 15:06:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 827 transitions. [2024-11-18 15:06:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 15:06:06,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:06,458 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:06,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:06:06,462 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:06,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash -103942672, now seen corresponding path program 1 times [2024-11-18 15:06:06,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:06,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966436416] [2024-11-18 15:06:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:06,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966436416] [2024-11-18 15:06:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966436416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:06:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33857522] [2024-11-18 15:06:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:06,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:06:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:06:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:06:06,604 INFO L87 Difference]: Start difference. First operand 540 states and 827 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-18 15:06:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:06,767 INFO L93 Difference]: Finished difference Result 4652 states and 7235 transitions. [2024-11-18 15:06:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:06:06,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2024-11-18 15:06:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:06,779 INFO L225 Difference]: With dead ends: 4652 [2024-11-18 15:06:06,779 INFO L226 Difference]: Without dead ends: 4138 [2024-11-18 15:06:06,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:06:06,782 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 784 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:06,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 993 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:06:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2024-11-18 15:06:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 1052. [2024-11-18 15:06:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.5176022835394862) internal successors, (1595), 1051 states have internal predecessors, (1595), 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) [2024-11-18 15:06:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1595 transitions. [2024-11-18 15:06:06,823 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1595 transitions. Word has length 51 [2024-11-18 15:06:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:06,823 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1595 transitions. [2024-11-18 15:06:06,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-18 15:06:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1595 transitions. [2024-11-18 15:06:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 15:06:06,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:06,824 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:06,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:06:06,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:06,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2026482100, now seen corresponding path program 1 times [2024-11-18 15:06:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83946286] [2024-11-18 15:06:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:06,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:06,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83946286] [2024-11-18 15:06:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83946286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:06,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681534459] [2024-11-18 15:06:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:06,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:06,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:06,875 INFO L87 Difference]: Start difference. First operand 1052 states and 1595 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-18 15:06:06,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:06,894 INFO L93 Difference]: Finished difference Result 2570 states and 3911 transitions. [2024-11-18 15:06:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2024-11-18 15:06:06,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:06,898 INFO L225 Difference]: With dead ends: 2570 [2024-11-18 15:06:06,898 INFO L226 Difference]: Without dead ends: 1544 [2024-11-18 15:06:06,899 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 [2024-11-18 15:06:06,900 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:06,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 201 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-18 15:06:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2024-11-18 15:06:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.5035691109669047) internal successors, (2317), 1541 states have internal predecessors, (2317), 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) [2024-11-18 15:06:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2317 transitions. [2024-11-18 15:06:06,917 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2317 transitions. Word has length 53 [2024-11-18 15:06:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:06,918 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2317 transitions. [2024-11-18 15:06:06,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-18 15:06:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2317 transitions. [2024-11-18 15:06:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 15:06:06,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:06,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:06,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:06:06,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:06,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2005479445, now seen corresponding path program 1 times [2024-11-18 15:06:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604166938] [2024-11-18 15:06:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:07,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:07,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604166938] [2024-11-18 15:06:07,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604166938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:07,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:07,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:06:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438145072] [2024-11-18 15:06:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:07,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:06:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:06:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:06:07,140 INFO L87 Difference]: Start difference. First operand 1542 states and 2317 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-18 15:06:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:07,239 INFO L93 Difference]: Finished difference Result 3058 states and 4607 transitions. [2024-11-18 15:06:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:06:07,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2024-11-18 15:06:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:07,244 INFO L225 Difference]: With dead ends: 3058 [2024-11-18 15:06:07,244 INFO L226 Difference]: Without dead ends: 1544 [2024-11-18 15:06:07,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:06:07,247 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 208 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:07,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 324 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-18 15:06:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2024-11-18 15:06:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4879948085658663) internal successors, (2293), 1541 states have internal predecessors, (2293), 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) [2024-11-18 15:06:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2293 transitions. [2024-11-18 15:06:07,270 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2293 transitions. Word has length 53 [2024-11-18 15:06:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:07,271 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2293 transitions. [2024-11-18 15:06:07,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-18 15:06:07,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2293 transitions. [2024-11-18 15:06:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 15:06:07,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:07,274 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:07,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:06:07,275 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:07,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2042230043, now seen corresponding path program 1 times [2024-11-18 15:06:07,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:07,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597133941] [2024-11-18 15:06:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:07,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597133941] [2024-11-18 15:06:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597133941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:06:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612473898] [2024-11-18 15:06:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:07,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:06:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:06:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:06:07,366 INFO L87 Difference]: Start difference. First operand 1542 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-18 15:06:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:07,435 INFO L93 Difference]: Finished difference Result 3056 states and 4558 transitions. [2024-11-18 15:06:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:06:07,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-18 15:06:07,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:07,439 INFO L225 Difference]: With dead ends: 3056 [2024-11-18 15:06:07,439 INFO L226 Difference]: Without dead ends: 1542 [2024-11-18 15:06:07,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:06:07,442 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 275 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:07,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 67 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-18 15:06:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2024-11-18 15:06:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4672290720311485) internal successors, (2261), 1541 states have internal predecessors, (2261), 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) [2024-11-18 15:06:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2261 transitions. [2024-11-18 15:06:07,478 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2261 transitions. Word has length 54 [2024-11-18 15:06:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:07,478 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2261 transitions. [2024-11-18 15:06:07,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-18 15:06:07,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2261 transitions. [2024-11-18 15:06:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 15:06:07,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:07,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:07,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:06:07,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:07,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1489873546, now seen corresponding path program 1 times [2024-11-18 15:06:07,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:07,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802163] [2024-11-18 15:06:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802163] [2024-11-18 15:06:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:07,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:06:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587591078] [2024-11-18 15:06:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:07,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:06:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:06:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:06:07,560 INFO L87 Difference]: Start difference. First operand 1542 states and 2261 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-18 15:06:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:07,626 INFO L93 Difference]: Finished difference Result 3056 states and 4494 transitions. [2024-11-18 15:06:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:06:07,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-18 15:06:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:07,631 INFO L225 Difference]: With dead ends: 3056 [2024-11-18 15:06:07,631 INFO L226 Difference]: Without dead ends: 1542 [2024-11-18 15:06:07,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:06:07,634 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 259 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:07,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 75 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-18 15:06:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2024-11-18 15:06:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4516547696301103) internal successors, (2237), 1541 states have internal predecessors, (2237), 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) [2024-11-18 15:06:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2237 transitions. [2024-11-18 15:06:07,653 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2237 transitions. Word has length 54 [2024-11-18 15:06:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:07,653 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2237 transitions. [2024-11-18 15:06:07,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-18 15:06:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2237 transitions. [2024-11-18 15:06:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 15:06:07,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:07,654 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:07,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:06:07,655 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:07,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1617958853, now seen corresponding path program 1 times [2024-11-18 15:06:07,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:07,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728640119] [2024-11-18 15:06:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:07,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728640119] [2024-11-18 15:06:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728640119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:07,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:06:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897751839] [2024-11-18 15:06:07,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:07,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:06:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:06:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:06:07,730 INFO L87 Difference]: Start difference. First operand 1542 states and 2237 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-18 15:06:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:07,783 INFO L93 Difference]: Finished difference Result 3056 states and 4446 transitions. [2024-11-18 15:06:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:06:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-18 15:06:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:07,787 INFO L225 Difference]: With dead ends: 3056 [2024-11-18 15:06:07,787 INFO L226 Difference]: Without dead ends: 1542 [2024-11-18 15:06:07,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:06:07,789 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 243 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:07,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 83 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-18 15:06:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2024-11-18 15:06:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4360804672290721) internal successors, (2213), 1541 states have internal predecessors, (2213), 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) [2024-11-18 15:06:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2213 transitions. [2024-11-18 15:06:07,805 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2213 transitions. Word has length 54 [2024-11-18 15:06:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:07,805 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2213 transitions. [2024-11-18 15:06:07,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-18 15:06:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2213 transitions. [2024-11-18 15:06:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 15:06:07,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:07,806 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:06:07,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:06:07,806 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:07,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1811476054, now seen corresponding path program 1 times [2024-11-18 15:06:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554068337] [2024-11-18 15:06:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554068337] [2024-11-18 15:06:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554068337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:07,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:07,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:06:07,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742514909] [2024-11-18 15:06:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:07,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:06:07,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:06:07,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:06:07,980 INFO L87 Difference]: Start difference. First operand 1542 states and 2213 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-18 15:06:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:08,002 INFO L93 Difference]: Finished difference Result 1608 states and 2310 transitions. [2024-11-18 15:06:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:06:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2024-11-18 15:06:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:08,005 INFO L225 Difference]: With dead ends: 1608 [2024-11-18 15:06:08,006 INFO L226 Difference]: Without dead ends: 1606 [2024-11-18 15:06:08,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:06:08,007 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:08,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 384 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-18 15:06:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-11-18 15:06:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.4137071651090343) internal successors, (2269), 1605 states have internal predecessors, (2269), 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) [2024-11-18 15:06:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2269 transitions. [2024-11-18 15:06:08,026 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2269 transitions. Word has length 54 [2024-11-18 15:06:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:08,026 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2269 transitions. [2024-11-18 15:06:08,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-18 15:06:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2269 transitions. [2024-11-18 15:06:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 15:06:08,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:08,028 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:08,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:06:08,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:08,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1690284398, now seen corresponding path program 1 times [2024-11-18 15:06:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:08,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164641774] [2024-11-18 15:06:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:08,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 15:06:08,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164641774] [2024-11-18 15:06:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164641774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:08,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:08,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:06:08,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378610859] [2024-11-18 15:06:08,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:08,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:06:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:06:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:06:08,143 INFO L87 Difference]: Start difference. First operand 1606 states and 2269 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-18 15:06:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:08,245 INFO L93 Difference]: Finished difference Result 7736 states and 10978 transitions. [2024-11-18 15:06:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:06:08,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 76 [2024-11-18 15:06:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:08,260 INFO L225 Difference]: With dead ends: 7736 [2024-11-18 15:06:08,260 INFO L226 Difference]: Without dead ends: 6646 [2024-11-18 15:06:08,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:06:08,263 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 471 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:08,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 530 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:06:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2024-11-18 15:06:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 2942. [2024-11-18 15:06:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2941 states have (on average 1.4107446446786807) internal successors, (4149), 2941 states have internal predecessors, (4149), 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) [2024-11-18 15:06:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 4149 transitions. [2024-11-18 15:06:08,324 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 4149 transitions. Word has length 76 [2024-11-18 15:06:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:08,324 INFO L471 AbstractCegarLoop]: Abstraction has 2942 states and 4149 transitions. [2024-11-18 15:06:08,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-18 15:06:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 4149 transitions. [2024-11-18 15:06:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 15:06:08,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:08,327 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:08,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 15:06:08,328 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:08,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash -34257664, now seen corresponding path program 1 times [2024-11-18 15:06:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221312352] [2024-11-18 15:06:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 15:06:08,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:08,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221312352] [2024-11-18 15:06:08,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221312352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:08,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:06:08,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110011190] [2024-11-18 15:06:08,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:08,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:06:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:06:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:06:08,429 INFO L87 Difference]: Start difference. First operand 2942 states and 4149 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:06:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:08,519 INFO L93 Difference]: Finished difference Result 9312 states and 13202 transitions. [2024-11-18 15:06:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:06:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-18 15:06:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:08,544 INFO L225 Difference]: With dead ends: 9312 [2024-11-18 15:06:08,545 INFO L226 Difference]: Without dead ends: 7734 [2024-11-18 15:06:08,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:06:08,549 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 485 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:08,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 582 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2024-11-18 15:06:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 5062. [2024-11-18 15:06:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5061 states have (on average 1.4078245406046237) internal successors, (7125), 5061 states have internal predecessors, (7125), 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) [2024-11-18 15:06:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 7125 transitions. [2024-11-18 15:06:08,629 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 7125 transitions. Word has length 76 [2024-11-18 15:06:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:08,629 INFO L471 AbstractCegarLoop]: Abstraction has 5062 states and 7125 transitions. [2024-11-18 15:06:08,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:06:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 7125 transitions. [2024-11-18 15:06:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 15:06:08,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:08,631 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:08,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 15:06:08,631 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:08,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:08,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1119688442, now seen corresponding path program 1 times [2024-11-18 15:06:08,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:08,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130378808] [2024-11-18 15:06:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 15:06:08,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:08,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130378808] [2024-11-18 15:06:08,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130378808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:08,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:08,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:06:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289095523] [2024-11-18 15:06:08,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:08,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:06:08,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:06:08,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:06:08,724 INFO L87 Difference]: Start difference. First operand 5062 states and 7125 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-18 15:06:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:08,819 INFO L93 Difference]: Finished difference Result 10888 states and 15418 transitions. [2024-11-18 15:06:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:06:08,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2024-11-18 15:06:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:08,831 INFO L225 Difference]: With dead ends: 10888 [2024-11-18 15:06:08,832 INFO L226 Difference]: Without dead ends: 9310 [2024-11-18 15:06:08,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:06:08,835 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 434 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:08,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 637 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:06:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9310 states. [2024-11-18 15:06:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9310 to 6638. [2024-11-18 15:06:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6637 states have (on average 1.407412987795691) internal successors, (9341), 6637 states have internal predecessors, (9341), 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) [2024-11-18 15:06:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 9341 transitions. [2024-11-18 15:06:08,904 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 9341 transitions. Word has length 76 [2024-11-18 15:06:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:08,904 INFO L471 AbstractCegarLoop]: Abstraction has 6638 states and 9341 transitions. [2024-11-18 15:06:08,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-18 15:06:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 9341 transitions. [2024-11-18 15:06:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 15:06:08,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:08,921 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:08,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 15:06:08,921 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:08,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash 261787764, now seen corresponding path program 1 times [2024-11-18 15:06:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:08,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360962449] [2024-11-18 15:06:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:08,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 15:06:09,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:09,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360962449] [2024-11-18 15:06:09,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360962449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:09,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:09,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:06:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784226897] [2024-11-18 15:06:09,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:09,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:06:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:06:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:06:09,015 INFO L87 Difference]: Start difference. First operand 6638 states and 9341 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-18 15:06:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:09,094 INFO L93 Difference]: Finished difference Result 12464 states and 17634 transitions. [2024-11-18 15:06:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:06:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 76 [2024-11-18 15:06:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:09,106 INFO L225 Difference]: With dead ends: 12464 [2024-11-18 15:06:09,107 INFO L226 Difference]: Without dead ends: 10886 [2024-11-18 15:06:09,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:06:09,110 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 473 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:09,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 609 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10886 states. [2024-11-18 15:06:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10886 to 8214. [2024-11-18 15:06:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 8213 states have (on average 1.4071593814684038) internal successors, (11557), 8213 states have internal predecessors, (11557), 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) [2024-11-18 15:06:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 11557 transitions. [2024-11-18 15:06:09,193 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 11557 transitions. Word has length 76 [2024-11-18 15:06:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:09,193 INFO L471 AbstractCegarLoop]: Abstraction has 8214 states and 11557 transitions. [2024-11-18 15:06:09,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-18 15:06:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 11557 transitions. [2024-11-18 15:06:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 15:06:09,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:09,195 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:09,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 15:06:09,195 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:09,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1414120063, now seen corresponding path program 1 times [2024-11-18 15:06:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:09,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952745574] [2024-11-18 15:06:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952745574] [2024-11-18 15:06:09,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952745574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:06:09,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83235616] [2024-11-18 15:06:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:06:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:06:09,422 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) [2024-11-18 15:06:09,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:06:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:09,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 15:06:09,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:06:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:10,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:06:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83235616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:06:10,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:06:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-18 15:06:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108453651] [2024-11-18 15:06:10,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:06:10,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 15:06:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 15:06:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-18 15:06:10,559 INFO L87 Difference]: Start difference. First operand 8214 states and 11557 transitions. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-18 15:06:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:13,747 INFO L93 Difference]: Finished difference Result 74684 states and 104410 transitions. [2024-11-18 15:06:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-18 15:06:13,748 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 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 [2024-11-18 15:06:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:13,840 INFO L225 Difference]: With dead ends: 74684 [2024-11-18 15:06:13,840 INFO L226 Difference]: Without dead ends: 66498 [2024-11-18 15:06:13,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4397 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2448, Invalid=11358, Unknown=0, NotChecked=0, Total=13806 [2024-11-18 15:06:13,864 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 3677 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3677 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:13,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3677 Valid, 1390 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 15:06:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66498 states. [2024-11-18 15:06:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66498 to 38182. [2024-11-18 15:06:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38182 states, 38181 states have (on average 1.390298839737042) internal successors, (53083), 38181 states have internal predecessors, (53083), 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) [2024-11-18 15:06:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38182 states to 38182 states and 53083 transitions. [2024-11-18 15:06:14,568 INFO L78 Accepts]: Start accepts. Automaton has 38182 states and 53083 transitions. Word has length 77 [2024-11-18 15:06:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:14,569 INFO L471 AbstractCegarLoop]: Abstraction has 38182 states and 53083 transitions. [2024-11-18 15:06:14,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 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) [2024-11-18 15:06:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 38182 states and 53083 transitions. [2024-11-18 15:06:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 15:06:14,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:14,573 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:14,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:06:14,774 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,SelfDestructingSolverStorable15 [2024-11-18 15:06:14,776 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:14,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:14,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1826617902, now seen corresponding path program 1 times [2024-11-18 15:06:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:14,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570524994] [2024-11-18 15:06:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:14,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:15,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:15,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570524994] [2024-11-18 15:06:15,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570524994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:06:15,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353391259] [2024-11-18 15:06:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:15,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:06:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:06:15,163 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) [2024-11-18 15:06:15,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:06:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:15,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 15:06:15,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:06:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:16,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:06:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353391259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:06:16,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:06:16,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-18 15:06:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626360730] [2024-11-18 15:06:16,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:06:16,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 15:06:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:16,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 15:06:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-18 15:06:16,773 INFO L87 Difference]: Start difference. First operand 38182 states and 53083 transitions. Second operand has 32 states, 32 states have (on average 6.53125) internal successors, (209), 32 states have internal predecessors, (209), 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) [2024-11-18 15:06:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:27,486 INFO L93 Difference]: Finished difference Result 290135 states and 401740 transitions. [2024-11-18 15:06:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2024-11-18 15:06:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.53125) internal successors, (209), 32 states have internal predecessors, (209), 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 78 [2024-11-18 15:06:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:27,866 INFO L225 Difference]: With dead ends: 290135 [2024-11-18 15:06:27,866 INFO L226 Difference]: Without dead ends: 251981 [2024-11-18 15:06:28,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34001 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=9691, Invalid=68989, Unknown=0, NotChecked=0, Total=78680 [2024-11-18 15:06:28,029 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 16259 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16259 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:28,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16259 Valid, 1681 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 15:06:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251981 states. [2024-11-18 15:06:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251981 to 99024. [2024-11-18 15:06:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99024 states, 99023 states have (on average 1.3882330367692355) internal successors, (137467), 99023 states have internal predecessors, (137467), 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) [2024-11-18 15:06:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99024 states to 99024 states and 137467 transitions. [2024-11-18 15:06:30,272 INFO L78 Accepts]: Start accepts. Automaton has 99024 states and 137467 transitions. Word has length 78 [2024-11-18 15:06:30,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:30,274 INFO L471 AbstractCegarLoop]: Abstraction has 99024 states and 137467 transitions. [2024-11-18 15:06:30,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.53125) internal successors, (209), 32 states have internal predecessors, (209), 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) [2024-11-18 15:06:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 99024 states and 137467 transitions. [2024-11-18 15:06:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:06:30,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:30,282 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:30,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:06:30,482 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,SelfDestructingSolverStorable16 [2024-11-18 15:06:30,482 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:30,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1417022205, now seen corresponding path program 1 times [2024-11-18 15:06:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259067012] [2024-11-18 15:06:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:30,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:30,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259067012] [2024-11-18 15:06:30,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259067012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:30,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:30,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964482317] [2024-11-18 15:06:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:30,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:30,572 INFO L87 Difference]: Start difference. First operand 99024 states and 137467 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-18 15:06:31,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:31,282 INFO L93 Difference]: Finished difference Result 195102 states and 271111 transitions. [2024-11-18 15:06:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:31,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2024-11-18 15:06:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:31,398 INFO L225 Difference]: With dead ends: 195102 [2024-11-18 15:06:31,399 INFO L226 Difference]: Without dead ends: 96106 [2024-11-18 15:06:31,422 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 [2024-11-18 15:06:31,423 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 45 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:31,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 222 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96106 states. [2024-11-18 15:06:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96106 to 93044. [2024-11-18 15:06:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93044 states, 93043 states have (on average 1.3676579645970144) internal successors, (127251), 93043 states have internal predecessors, (127251), 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) [2024-11-18 15:06:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93044 states to 93044 states and 127251 transitions. [2024-11-18 15:06:32,505 INFO L78 Accepts]: Start accepts. Automaton has 93044 states and 127251 transitions. Word has length 79 [2024-11-18 15:06:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:32,505 INFO L471 AbstractCegarLoop]: Abstraction has 93044 states and 127251 transitions. [2024-11-18 15:06:32,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-18 15:06:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 93044 states and 127251 transitions. [2024-11-18 15:06:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:06:32,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:32,703 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:32,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 15:06:32,703 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:32,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:32,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1571427843, now seen corresponding path program 1 times [2024-11-18 15:06:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:32,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308316798] [2024-11-18 15:06:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:33,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:33,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308316798] [2024-11-18 15:06:33,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308316798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:06:33,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053541830] [2024-11-18 15:06:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:33,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:06:33,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:06:33,032 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) [2024-11-18 15:06:33,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:06:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:33,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 15:06:33,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:06:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:33,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:06:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053541830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:06:34,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:06:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-18 15:06:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969189171] [2024-11-18 15:06:34,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:06:34,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 15:06:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 15:06:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-18 15:06:34,009 INFO L87 Difference]: Start difference. First operand 93044 states and 127251 transitions. Second operand has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 20 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) [2024-11-18 15:06:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:35,113 INFO L93 Difference]: Finished difference Result 370008 states and 507364 transitions. [2024-11-18 15:06:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 15:06:35,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 20 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 79 [2024-11-18 15:06:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:35,454 INFO L225 Difference]: With dead ends: 370008 [2024-11-18 15:06:35,454 INFO L226 Difference]: Without dead ends: 276992 [2024-11-18 15:06:35,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 15:06:35,526 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 476 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:35,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 595 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:06:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276992 states. [2024-11-18 15:06:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276992 to 225836. [2024-11-18 15:06:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225836 states, 225835 states have (on average 1.3631500874532292) internal successors, (307847), 225835 states have internal predecessors, (307847), 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) [2024-11-18 15:06:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225836 states to 225836 states and 307847 transitions. [2024-11-18 15:06:38,900 INFO L78 Accepts]: Start accepts. Automaton has 225836 states and 307847 transitions. Word has length 79 [2024-11-18 15:06:38,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:38,900 INFO L471 AbstractCegarLoop]: Abstraction has 225836 states and 307847 transitions. [2024-11-18 15:06:38,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 20 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) [2024-11-18 15:06:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 225836 states and 307847 transitions. [2024-11-18 15:06:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:06:38,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:38,906 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:38,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:06:39,110 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 [2024-11-18 15:06:39,111 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:39,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1819839102, now seen corresponding path program 1 times [2024-11-18 15:06:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106501417] [2024-11-18 15:06:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 15:06:39,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:39,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106501417] [2024-11-18 15:06:39,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106501417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:39,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:39,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:39,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843514818] [2024-11-18 15:06:39,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:39,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:39,161 INFO L87 Difference]: Start difference. First operand 225836 states and 307847 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-11-18 15:06:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:40,630 INFO L93 Difference]: Finished difference Result 415182 states and 566908 transitions. [2024-11-18 15:06:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:40,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 80 [2024-11-18 15:06:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:40,884 INFO L225 Difference]: With dead ends: 415182 [2024-11-18 15:06:40,885 INFO L226 Difference]: Without dead ends: 189374 [2024-11-18 15:06:41,016 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 [2024-11-18 15:06:41,017 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 59 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:41,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 119 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189374 states. [2024-11-18 15:06:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189374 to 189374. [2024-11-18 15:06:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189374 states, 189373 states have (on average 1.3509792842696688) internal successors, (255839), 189373 states have internal predecessors, (255839), 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) [2024-11-18 15:06:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189374 states to 189374 states and 255839 transitions. [2024-11-18 15:06:43,757 INFO L78 Accepts]: Start accepts. Automaton has 189374 states and 255839 transitions. Word has length 80 [2024-11-18 15:06:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:43,757 INFO L471 AbstractCegarLoop]: Abstraction has 189374 states and 255839 transitions. [2024-11-18 15:06:43,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-11-18 15:06:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 189374 states and 255839 transitions. [2024-11-18 15:06:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:06:43,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:43,760 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:43,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 15:06:43,761 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:43,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1069689257, now seen corresponding path program 1 times [2024-11-18 15:06:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508723772] [2024-11-18 15:06:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:43,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:43,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508723772] [2024-11-18 15:06:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508723772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661345808] [2024-11-18 15:06:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:43,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:43,812 INFO L87 Difference]: Start difference. First operand 189374 states and 255839 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-18 15:06:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:44,317 INFO L93 Difference]: Finished difference Result 294030 states and 396721 transitions. [2024-11-18 15:06:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2024-11-18 15:06:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:44,422 INFO L225 Difference]: With dead ends: 294030 [2024-11-18 15:06:44,422 INFO L226 Difference]: Without dead ends: 104684 [2024-11-18 15:06:44,982 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 [2024-11-18 15:06:44,982 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 39 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:44,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 202 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104684 states. [2024-11-18 15:06:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104684 to 104682. [2024-11-18 15:06:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104682 states, 104681 states have (on average 1.3298783924494417) internal successors, (139213), 104681 states have internal predecessors, (139213), 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) [2024-11-18 15:06:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104682 states to 104682 states and 139213 transitions. [2024-11-18 15:06:46,540 INFO L78 Accepts]: Start accepts. Automaton has 104682 states and 139213 transitions. Word has length 80 [2024-11-18 15:06:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:46,541 INFO L471 AbstractCegarLoop]: Abstraction has 104682 states and 139213 transitions. [2024-11-18 15:06:46,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-18 15:06:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 104682 states and 139213 transitions. [2024-11-18 15:06:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:06:46,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:46,544 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:46,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 15:06:46,544 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:46,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1355429702, now seen corresponding path program 1 times [2024-11-18 15:06:46,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:46,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501062924] [2024-11-18 15:06:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:46,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501062924] [2024-11-18 15:06:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501062924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:06:46,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:06:46,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:06:46,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697770321] [2024-11-18 15:06:46,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:06:46,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:06:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:46,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:06:46,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:06:46,594 INFO L87 Difference]: Start difference. First operand 104682 states and 139213 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-18 15:06:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:46,867 INFO L93 Difference]: Finished difference Result 158550 states and 210127 transitions. [2024-11-18 15:06:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:06:46,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2024-11-18 15:06:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:46,926 INFO L225 Difference]: With dead ends: 158550 [2024-11-18 15:06:46,926 INFO L226 Difference]: Without dead ends: 53896 [2024-11-18 15:06:46,974 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 [2024-11-18 15:06:46,975 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 31 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:46,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:06:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53896 states. [2024-11-18 15:06:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53896 to 53894. [2024-11-18 15:06:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53894 states, 53893 states have (on average 1.3045293451839757) internal successors, (70305), 53893 states have internal predecessors, (70305), 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) [2024-11-18 15:06:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53894 states to 53894 states and 70305 transitions. [2024-11-18 15:06:47,831 INFO L78 Accepts]: Start accepts. Automaton has 53894 states and 70305 transitions. Word has length 80 [2024-11-18 15:06:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:47,831 INFO L471 AbstractCegarLoop]: Abstraction has 53894 states and 70305 transitions. [2024-11-18 15:06:47,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-18 15:06:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 53894 states and 70305 transitions. [2024-11-18 15:06:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:06:47,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:47,834 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:47,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 15:06:47,834 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:47,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash 916702534, now seen corresponding path program 1 times [2024-11-18 15:06:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001624499] [2024-11-18 15:06:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001624499] [2024-11-18 15:06:48,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001624499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:06:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125270338] [2024-11-18 15:06:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:48,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:06:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:06:48,280 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) [2024-11-18 15:06:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:06:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:48,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 15:06:48,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:06:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:48,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:06:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:49,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125270338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:06:49,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:06:49,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2024-11-18 15:06:49,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326942466] [2024-11-18 15:06:49,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:06:49,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 15:06:49,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:49,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 15:06:49,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-18 15:06:49,694 INFO L87 Difference]: Start difference. First operand 53894 states and 70305 transitions. Second operand has 30 states, 30 states have (on average 6.433333333333334) internal successors, (193), 30 states have internal predecessors, (193), 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) [2024-11-18 15:06:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:06:50,711 INFO L93 Difference]: Finished difference Result 99804 states and 131493 transitions. [2024-11-18 15:06:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 15:06:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.433333333333334) internal successors, (193), 30 states have internal predecessors, (193), 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 80 [2024-11-18 15:06:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:06:50,809 INFO L225 Difference]: With dead ends: 99804 [2024-11-18 15:06:50,809 INFO L226 Difference]: Without dead ends: 84026 [2024-11-18 15:06:50,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 15:06:50,844 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 1496 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:06:50,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1345 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:06:50,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2024-11-18 15:06:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 54290. [2024-11-18 15:06:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54290 states, 54289 states have (on average 1.3059551658715394) internal successors, (70899), 54289 states have internal predecessors, (70899), 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) [2024-11-18 15:06:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54290 states to 54290 states and 70899 transitions. [2024-11-18 15:06:51,603 INFO L78 Accepts]: Start accepts. Automaton has 54290 states and 70899 transitions. Word has length 80 [2024-11-18 15:06:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:06:51,603 INFO L471 AbstractCegarLoop]: Abstraction has 54290 states and 70899 transitions. [2024-11-18 15:06:51,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.433333333333334) internal successors, (193), 30 states have internal predecessors, (193), 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) [2024-11-18 15:06:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 54290 states and 70899 transitions. [2024-11-18 15:06:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:06:51,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:06:51,606 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 15:06:51,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 15:06:51,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:06:51,806 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:06:51,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:06:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 230432137, now seen corresponding path program 1 times [2024-11-18 15:06:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:06:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66343511] [2024-11-18 15:06:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:06:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:52,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:06:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66343511] [2024-11-18 15:06:52,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66343511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:06:52,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380894650] [2024-11-18 15:06:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:06:52,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:06:52,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:06:52,322 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) [2024-11-18 15:06:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:06:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:06:52,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-18 15:06:52,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:06:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:55,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:06:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:06:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380894650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:06:58,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:06:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 29, 26] total 64 [2024-11-18 15:06:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984501882] [2024-11-18 15:06:58,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:06:58,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-18 15:06:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:06:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-18 15:06:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=3619, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 15:06:58,289 INFO L87 Difference]: Start difference. First operand 54290 states and 70899 transitions. Second operand has 64 states, 64 states have (on average 3.4375) internal successors, (220), 64 states have internal predecessors, (220), 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)