./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label26.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/eca-rers2012/Problem17_label26.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 d21e74f8974e22fefe5d2a2f720c109d2a535f54b9e443011df3f86444f64325 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:50:20,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:50:20,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:50:20,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:50:20,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:50:20,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:50:20,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:50:20,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:50:20,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:50:20,838 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:50:20,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:50:20,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:50:20,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:50:20,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:50:20,842 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:50:20,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:50:20,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:50:20,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:50:20,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:50:20,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:50:20,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:50:20,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:50:20,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:50:20,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:50:20,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:50:20,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:50:20,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:50:20,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:50:20,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:50:20,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:50:20,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:50:20,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:50:20,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:50:20,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:50:20,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:50:20,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:50:20,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:50:20,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:50:20,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:50:20,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:50:20,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:50:20,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:50:20,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21e74f8974e22fefe5d2a2f720c109d2a535f54b9e443011df3f86444f64325 [2024-11-18 10:50:21,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:50:21,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:50:21,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:50:21,079 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:50:21,079 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:50:21,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label26.c [2024-11-18 10:50:22,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:50:22,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:50:22,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label26.c [2024-11-18 10:50:22,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07b09dea/08e67c554671486d8c2e2cd55da35f90/FLAGbd105cd90 [2024-11-18 10:50:22,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07b09dea/08e67c554671486d8c2e2cd55da35f90 [2024-11-18 10:50:22,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:50:22,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:50:22,973 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:50:22,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:50:22,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:50:22,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:50:22" (1/1) ... [2024-11-18 10:50:22,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:22, skipping insertion in model container [2024-11-18 10:50:22,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:50:22" (1/1) ... [2024-11-18 10:50:23,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:50:23,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label26.c[4393,4406] [2024-11-18 10:50:23,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:50:23,740 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:50:23,760 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label26.c[4393,4406] [2024-11-18 10:50:23,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:50:24,018 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:50:24,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24 WrapperNode [2024-11-18 10:50:24,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:50:24,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:50:24,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:50:24,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:50:24,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,320 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:50:24,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:50:24,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:50:24,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:50:24,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:50:24,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,487 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 10:50:24,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:50:24,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:50:24,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:50:24,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:50:24,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (1/1) ... [2024-11-18 10:50:24,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:50:24,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:24,726 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 10:50:24,735 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 10:50:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:50:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:50:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:50:24,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:50:24,840 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:50:24,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:50:27,626 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:50:27,626 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:50:27,660 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:50:27,661 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:50:27,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:27 BoogieIcfgContainer [2024-11-18 10:50:27,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:50:27,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:50:27,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:50:27,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:50:27,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:50:22" (1/3) ... [2024-11-18 10:50:27,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaa3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:50:27, skipping insertion in model container [2024-11-18 10:50:27,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:24" (2/3) ... [2024-11-18 10:50:27,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaa3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:50:27, skipping insertion in model container [2024-11-18 10:50:27,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:27" (3/3) ... [2024-11-18 10:50:27,670 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label26.c [2024-11-18 10:50:27,686 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:50:27,686 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:50:27,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:50:27,761 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;@79117def, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:50:27,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:50:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 10:50:27,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:27,780 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] [2024-11-18 10:50:27,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:27,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2024-11-18 10:50:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535637714] [2024-11-18 10:50:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:28,054 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 10:50:28,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535637714] [2024-11-18 10:50:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535637714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:28,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:28,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524916358] [2024-11-18 10:50:28,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:28,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:28,091 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 10:50:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:30,360 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-18 10:50:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:30,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2024-11-18 10:50:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:30,381 INFO L225 Difference]: With dead ends: 1642 [2024-11-18 10:50:30,381 INFO L226 Difference]: Without dead ends: 975 [2024-11-18 10:50:30,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:30,389 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 462 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:30,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 10:50:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-18 10:50:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-18 10:50:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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 10:50:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-18 10:50:30,493 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 28 [2024-11-18 10:50:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:30,493 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-18 10:50:30,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 10:50:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-18 10:50:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 10:50:30,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:30,498 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:30,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:50:30,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:30,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash 176078254, now seen corresponding path program 1 times [2024-11-18 10:50:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:30,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761335412] [2024-11-18 10:50:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:30,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761335412] [2024-11-18 10:50:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761335412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748705406] [2024-11-18 10:50:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:30,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:30,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:30,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:30,792 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:32,614 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-18 10:50:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-18 10:50:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:32,624 INFO L225 Difference]: With dead ends: 2814 [2024-11-18 10:50:32,624 INFO L226 Difference]: Without dead ends: 1844 [2024-11-18 10:50:32,625 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 10:50:32,630 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 463 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:32,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:50:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-18 10:50:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-18 10:50:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 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 10:50:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-18 10:50:32,673 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 98 [2024-11-18 10:50:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:32,674 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-18 10:50:32,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-18 10:50:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 10:50:32,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:32,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:32,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:50:32,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:32,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1322137327, now seen corresponding path program 1 times [2024-11-18 10:50:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:32,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309215762] [2024-11-18 10:50:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:32,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:32,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309215762] [2024-11-18 10:50:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309215762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:32,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:32,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798558324] [2024-11-18 10:50:32,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:32,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:32,859 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:34,825 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-18 10:50:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-18 10:50:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:34,837 INFO L225 Difference]: With dead ends: 5395 [2024-11-18 10:50:34,837 INFO L226 Difference]: Without dead ends: 2701 [2024-11-18 10:50:34,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:34,843 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:34,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:50:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-18 10:50:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-18 10:50:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 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 10:50:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-18 10:50:34,932 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 120 [2024-11-18 10:50:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:34,933 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-18 10:50:34,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-18 10:50:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-18 10:50:34,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:34,942 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:34,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:50:34,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:34,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1416376421, now seen corresponding path program 1 times [2024-11-18 10:50:34,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127862041] [2024-11-18 10:50:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:35,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:35,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127862041] [2024-11-18 10:50:35,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127862041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:35,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202227947] [2024-11-18 10:50:35,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:35,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:35,268 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 10:50:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:37,162 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-18 10:50:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2024-11-18 10:50:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:37,175 INFO L225 Difference]: With dead ends: 7108 [2024-11-18 10:50:37,175 INFO L226 Difference]: Without dead ends: 4409 [2024-11-18 10:50:37,180 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 10:50:37,181 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:37,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:50:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-18 10:50:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-18 10:50:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 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 10:50:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-18 10:50:37,270 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 180 [2024-11-18 10:50:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:37,271 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-18 10:50:37,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 10:50:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-18 10:50:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 10:50:37,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:37,275 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:37,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:50:37,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:37,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash 744727648, now seen corresponding path program 1 times [2024-11-18 10:50:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:37,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269160902] [2024-11-18 10:50:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:37,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:50:37,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269160902] [2024-11-18 10:50:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269160902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:37,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:37,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:37,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071246349] [2024-11-18 10:50:37,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:37,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:37,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:37,538 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 10:50:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:39,042 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-18 10:50:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 182 [2024-11-18 10:50:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:39,059 INFO L225 Difference]: With dead ends: 10936 [2024-11-18 10:50:39,059 INFO L226 Difference]: Without dead ends: 6528 [2024-11-18 10:50:39,065 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 10:50:39,067 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 423 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:39,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:50:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-18 10:50:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-18 10:50:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 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 10:50:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-18 10:50:39,133 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 182 [2024-11-18 10:50:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:39,133 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-18 10:50:39,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 10:50:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-18 10:50:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-18 10:50:39,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:39,136 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:39,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:50:39,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:39,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash -929604570, now seen corresponding path program 1 times [2024-11-18 10:50:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:39,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756619971] [2024-11-18 10:50:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:39,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:39,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:39,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756619971] [2024-11-18 10:50:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756619971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:39,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872880526] [2024-11-18 10:50:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:39,482 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 10:50:39,487 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 10:50:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:39,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:50:39,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:39,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:50:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:40,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872880526] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:40,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:50:40,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2024-11-18 10:50:40,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662739769] [2024-11-18 10:50:40,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:40,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:40,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:40,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:50:40,207 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 10:50:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:42,833 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2024-11-18 10:50:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:42,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 248 [2024-11-18 10:50:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:42,871 INFO L225 Difference]: With dead ends: 15171 [2024-11-18 10:50:42,872 INFO L226 Difference]: Without dead ends: 10791 [2024-11-18 10:50:42,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:50:42,886 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 979 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:42,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 145 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:50:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2024-11-18 10:50:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2024-11-18 10:50:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 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 10:50:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2024-11-18 10:50:43,081 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 248 [2024-11-18 10:50:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:43,081 INFO L471 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2024-11-18 10:50:43,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 10:50:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2024-11-18 10:50:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-18 10:50:43,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:43,084 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:43,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:50:43,284 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,SelfDestructingSolverStorable5 [2024-11-18 10:50:43,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:43,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2024788157, now seen corresponding path program 1 times [2024-11-18 10:50:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:43,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330038007] [2024-11-18 10:50:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:43,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-18 10:50:43,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:43,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330038007] [2024-11-18 10:50:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330038007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:43,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:43,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66557893] [2024-11-18 10:50:43,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:43,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:43,434 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 10:50:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:45,054 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2024-11-18 10:50:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:45,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 260 [2024-11-18 10:50:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:45,082 INFO L225 Difference]: With dead ends: 23703 [2024-11-18 10:50:45,082 INFO L226 Difference]: Without dead ends: 12491 [2024-11-18 10:50:45,093 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 10:50:45,093 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:45,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2024-11-18 10:50:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2024-11-18 10:50:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 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 10:50:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2024-11-18 10:50:45,306 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 260 [2024-11-18 10:50:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:45,306 INFO L471 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2024-11-18 10:50:45,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 10:50:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2024-11-18 10:50:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 10:50:45,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:45,312 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:45,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:50:45,312 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:45,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1710928730, now seen corresponding path program 1 times [2024-11-18 10:50:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844570601] [2024-11-18 10:50:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 10:50:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844570601] [2024-11-18 10:50:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844570601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:45,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:45,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321888803] [2024-11-18 10:50:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:45,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:45,521 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 10:50:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:47,143 INFO L93 Difference]: Finished difference Result 27534 states and 31665 transitions. [2024-11-18 10:50:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 300 [2024-11-18 10:50:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:47,166 INFO L225 Difference]: With dead ends: 27534 [2024-11-18 10:50:47,166 INFO L226 Difference]: Without dead ends: 14611 [2024-11-18 10:50:47,179 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 10:50:47,180 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 464 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:47,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 354 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14611 states. [2024-11-18 10:50:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14611 to 14182. [2024-11-18 10:50:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14182 states, 14181 states have (on average 1.1389887878146816) internal successors, (16152), 14181 states have internal predecessors, (16152), 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 10:50:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14182 states to 14182 states and 16152 transitions. [2024-11-18 10:50:47,375 INFO L78 Accepts]: Start accepts. Automaton has 14182 states and 16152 transitions. Word has length 300 [2024-11-18 10:50:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:47,376 INFO L471 AbstractCegarLoop]: Abstraction has 14182 states and 16152 transitions. [2024-11-18 10:50:47,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 10:50:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14182 states and 16152 transitions. [2024-11-18 10:50:47,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-18 10:50:47,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:47,381 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:47,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:50:47,382 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:47,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 335207748, now seen corresponding path program 1 times [2024-11-18 10:50:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530469316] [2024-11-18 10:50:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 10:50:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530469316] [2024-11-18 10:50:47,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530469316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:47,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:47,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101527365] [2024-11-18 10:50:47,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:47,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:47,663 INFO L87 Difference]: Start difference. First operand 14182 states and 16152 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 10:50:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:49,297 INFO L93 Difference]: Finished difference Result 37316 states and 42354 transitions. [2024-11-18 10:50:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:49,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 322 [2024-11-18 10:50:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:49,332 INFO L225 Difference]: With dead ends: 37316 [2024-11-18 10:50:49,332 INFO L226 Difference]: Without dead ends: 23136 [2024-11-18 10:50:49,348 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 10:50:49,350 INFO L432 NwaCegarLoop]: 768 mSDtfsCounter, 322 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:49,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 825 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23136 states. [2024-11-18 10:50:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23136 to 21418. [2024-11-18 10:50:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21418 states, 21417 states have (on average 1.120885278050147) internal successors, (24006), 21417 states have internal predecessors, (24006), 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 10:50:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21418 states to 21418 states and 24006 transitions. [2024-11-18 10:50:49,725 INFO L78 Accepts]: Start accepts. Automaton has 21418 states and 24006 transitions. Word has length 322 [2024-11-18 10:50:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:49,725 INFO L471 AbstractCegarLoop]: Abstraction has 21418 states and 24006 transitions. [2024-11-18 10:50:49,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 10:50:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 21418 states and 24006 transitions. [2024-11-18 10:50:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 10:50:49,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:49,732 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:49,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:50:49,732 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:49,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 185029324, now seen corresponding path program 1 times [2024-11-18 10:50:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977952735] [2024-11-18 10:50:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 78 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 10:50:50,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:50,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977952735] [2024-11-18 10:50:50,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977952735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:50,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140589263] [2024-11-18 10:50:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:50,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:50,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:50,206 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 10:50:50,208 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 10:50:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:50,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:50:50,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 78 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 10:50:50,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:50:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 10:50:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140589263] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:50,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:50:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:50:50,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291577755] [2024-11-18 10:50:50,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:50,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:50,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:50:50,819 INFO L87 Difference]: Start difference. First operand 21418 states and 24006 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 10:50:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:53,510 INFO L93 Difference]: Finished difference Result 51365 states and 57788 transitions. [2024-11-18 10:50:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 327 [2024-11-18 10:50:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:53,551 INFO L225 Difference]: With dead ends: 51365 [2024-11-18 10:50:53,551 INFO L226 Difference]: Without dead ends: 29521 [2024-11-18 10:50:53,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:50:53,574 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 845 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:53,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 190 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:50:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29521 states. [2024-11-18 10:50:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29521 to 28244. [2024-11-18 10:50:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28244 states, 28243 states have (on average 1.1312537619941225) internal successors, (31950), 28243 states have internal predecessors, (31950), 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 10:50:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28244 states to 28244 states and 31950 transitions. [2024-11-18 10:50:54,130 INFO L78 Accepts]: Start accepts. Automaton has 28244 states and 31950 transitions. Word has length 327 [2024-11-18 10:50:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:54,131 INFO L471 AbstractCegarLoop]: Abstraction has 28244 states and 31950 transitions. [2024-11-18 10:50:54,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 10:50:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 28244 states and 31950 transitions. [2024-11-18 10:50:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-18 10:50:54,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:54,140 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:54,156 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 10:50:54,341 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,SelfDestructingSolverStorable9 [2024-11-18 10:50:54,341 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:54,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 182989261, now seen corresponding path program 1 times [2024-11-18 10:50:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:54,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841103009] [2024-11-18 10:50:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:54,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 10:50:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841103009] [2024-11-18 10:50:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841103009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132814822] [2024-11-18 10:50:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:55,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:55,323 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 10:50:55,327 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 10:50:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:55,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:50:55,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 10:50:55,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:50:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 10:50:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132814822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:50:56,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:50:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:50:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36907625] [2024-11-18 10:50:56,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:50:56,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:50:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:50:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:50:56,975 INFO L87 Difference]: Start difference. First operand 28244 states and 31950 transitions. Second operand has 10 states, 10 states have (on average 69.3) internal successors, (693), 9 states have internal predecessors, (693), 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 10:51:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:04,528 INFO L93 Difference]: Finished difference Result 84218 states and 94792 transitions. [2024-11-18 10:51:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 10:51:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 9 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2024-11-18 10:51:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:04,595 INFO L225 Difference]: With dead ends: 84218 [2024-11-18 10:51:04,595 INFO L226 Difference]: Without dead ends: 53851 [2024-11-18 10:51:04,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-18 10:51:04,611 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 9623 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 9079 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9623 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 10320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 9079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:04,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9623 Valid, 491 Invalid, 10320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 9079 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-18 10:51:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53851 states. [2024-11-18 10:51:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53851 to 51695. [2024-11-18 10:51:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51695 states, 51694 states have (on average 1.116686656091616) internal successors, (57726), 51694 states have internal predecessors, (57726), 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 10:51:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51695 states to 51695 states and 57726 transitions. [2024-11-18 10:51:05,191 INFO L78 Accepts]: Start accepts. Automaton has 51695 states and 57726 transitions. Word has length 340 [2024-11-18 10:51:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:05,192 INFO L471 AbstractCegarLoop]: Abstraction has 51695 states and 57726 transitions. [2024-11-18 10:51:05,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 9 states have internal predecessors, (693), 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 10:51:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 51695 states and 57726 transitions. [2024-11-18 10:51:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-18 10:51:05,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:05,196 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:05,210 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 10:51:05,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:05,399 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:05,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1005236947, now seen corresponding path program 1 times [2024-11-18 10:51:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:05,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258298300] [2024-11-18 10:51:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:51:05,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258298300] [2024-11-18 10:51:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258298300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:05,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038854685] [2024-11-18 10:51:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:05,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:05,775 INFO L87 Difference]: Start difference. First operand 51695 states and 57726 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 10:51:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:07,398 INFO L93 Difference]: Finished difference Result 122596 states and 137716 transitions. [2024-11-18 10:51:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 383 [2024-11-18 10:51:07,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:07,555 INFO L225 Difference]: With dead ends: 122596 [2024-11-18 10:51:07,555 INFO L226 Difference]: Without dead ends: 70899 [2024-11-18 10:51:07,599 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 10:51:07,600 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 370 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:07,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 279 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:51:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70899 states. [2024-11-18 10:51:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70899 to 68732. [2024-11-18 10:51:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68732 states, 68731 states have (on average 1.1167158923920792) internal successors, (76753), 68731 states have internal predecessors, (76753), 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 10:51:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68732 states to 68732 states and 76753 transitions. [2024-11-18 10:51:08,563 INFO L78 Accepts]: Start accepts. Automaton has 68732 states and 76753 transitions. Word has length 383 [2024-11-18 10:51:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:08,563 INFO L471 AbstractCegarLoop]: Abstraction has 68732 states and 76753 transitions. [2024-11-18 10:51:08,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 10:51:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 68732 states and 76753 transitions. [2024-11-18 10:51:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 10:51:08,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:08,572 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:08,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:51:08,572 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:08,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1024507897, now seen corresponding path program 1 times [2024-11-18 10:51:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:08,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283142675] [2024-11-18 10:51:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:08,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-18 10:51:08,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:08,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283142675] [2024-11-18 10:51:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283142675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:08,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:08,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757506878] [2024-11-18 10:51:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:08,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:08,917 INFO L87 Difference]: Start difference. First operand 68732 states and 76753 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 10:51:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:10,867 INFO L93 Difference]: Finished difference Result 157468 states and 175563 transitions. [2024-11-18 10:51:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 428 [2024-11-18 10:51:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:10,973 INFO L225 Difference]: With dead ends: 157468 [2024-11-18 10:51:10,973 INFO L226 Difference]: Without dead ends: 84895 [2024-11-18 10:51:11,009 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 10:51:11,010 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 449 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:11,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 598 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:51:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84895 states. [2024-11-18 10:51:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84895 to 78493. [2024-11-18 10:51:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78493 states, 78492 states have (on average 1.1061636854711308) internal successors, (86825), 78492 states have internal predecessors, (86825), 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 10:51:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78493 states to 78493 states and 86825 transitions. [2024-11-18 10:51:12,287 INFO L78 Accepts]: Start accepts. Automaton has 78493 states and 86825 transitions. Word has length 428 [2024-11-18 10:51:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:12,288 INFO L471 AbstractCegarLoop]: Abstraction has 78493 states and 86825 transitions. [2024-11-18 10:51:12,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 10:51:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 78493 states and 86825 transitions. [2024-11-18 10:51:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-18 10:51:12,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:12,298 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:12,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:51:12,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:12,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:12,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1646221535, now seen corresponding path program 1 times [2024-11-18 10:51:12,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:12,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057392011] [2024-11-18 10:51:12,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:12,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-18 10:51:12,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:12,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057392011] [2024-11-18 10:51:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057392011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:12,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:12,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777641681] [2024-11-18 10:51:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:12,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:12,935 INFO L87 Difference]: Start difference. First operand 78493 states and 86825 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 10:51:14,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:14,778 INFO L93 Difference]: Finished difference Result 178712 states and 198049 transitions. [2024-11-18 10:51:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:14,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 453 [2024-11-18 10:51:14,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:14,907 INFO L225 Difference]: With dead ends: 178712 [2024-11-18 10:51:14,907 INFO L226 Difference]: Without dead ends: 100217 [2024-11-18 10:51:14,951 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 10:51:14,951 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 479 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:14,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 182 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100217 states. [2024-11-18 10:51:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100217 to 98060. [2024-11-18 10:51:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98060 states, 98059 states have (on average 1.107945216655279) internal successors, (108644), 98059 states have internal predecessors, (108644), 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 10:51:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98060 states to 98060 states and 108644 transitions. [2024-11-18 10:51:16,423 INFO L78 Accepts]: Start accepts. Automaton has 98060 states and 108644 transitions. Word has length 453 [2024-11-18 10:51:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:16,423 INFO L471 AbstractCegarLoop]: Abstraction has 98060 states and 108644 transitions. [2024-11-18 10:51:16,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 10:51:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 98060 states and 108644 transitions. [2024-11-18 10:51:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-18 10:51:16,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:16,430 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:16,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:51:16,430 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:16,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -992601916, now seen corresponding path program 1 times [2024-11-18 10:51:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:16,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831796918] [2024-11-18 10:51:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 10:51:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831796918] [2024-11-18 10:51:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831796918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:16,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336359658] [2024-11-18 10:51:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:16,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:16,863 INFO L87 Difference]: Start difference. First operand 98060 states and 108644 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 10:51:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:18,871 INFO L93 Difference]: Finished difference Result 219550 states and 242946 transitions. [2024-11-18 10:51:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:18,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 475 [2024-11-18 10:51:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:19,025 INFO L225 Difference]: With dead ends: 219550 [2024-11-18 10:51:19,025 INFO L226 Difference]: Without dead ends: 121917 [2024-11-18 10:51:19,063 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 10:51:19,063 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 444 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:19,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 219 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121917 states. [2024-11-18 10:51:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121917 to 116347. [2024-11-18 10:51:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116347 states, 116346 states have (on average 1.098825915802864) internal successors, (127844), 116346 states have internal predecessors, (127844), 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 10:51:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116347 states to 116347 states and 127844 transitions. [2024-11-18 10:51:20,629 INFO L78 Accepts]: Start accepts. Automaton has 116347 states and 127844 transitions. Word has length 475 [2024-11-18 10:51:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:20,629 INFO L471 AbstractCegarLoop]: Abstraction has 116347 states and 127844 transitions. [2024-11-18 10:51:20,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 10:51:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 116347 states and 127844 transitions. [2024-11-18 10:51:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-18 10:51:20,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:20,635 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:20,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:51:20,635 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:20,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1734086119, now seen corresponding path program 1 times [2024-11-18 10:51:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846463987] [2024-11-18 10:51:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 392 proven. 26 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-18 10:51:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846463987] [2024-11-18 10:51:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846463987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170016720] [2024-11-18 10:51:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:21,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:21,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:21,214 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 10:51:21,215 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 10:51:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:21,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 10:51:21,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:51:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 582 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-18 10:51:22,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:51:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 448 proven. 52 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-18 10:51:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170016720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:51:22,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:51:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-11-18 10:51:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564475923] [2024-11-18 10:51:22,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:51:22,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 10:51:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 10:51:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:51:22,879 INFO L87 Difference]: Start difference. First operand 116347 states and 127844 transitions. Second operand has 9 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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 10:51:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:30,322 INFO L93 Difference]: Finished difference Result 270370 states and 296394 transitions. [2024-11-18 10:51:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 10:51:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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 481 [2024-11-18 10:51:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:30,511 INFO L225 Difference]: With dead ends: 270370 [2024-11-18 10:51:30,511 INFO L226 Difference]: Without dead ends: 152750 [2024-11-18 10:51:30,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 961 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-18 10:51:30,579 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 5740 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 9839 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5740 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 11043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 9839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:30,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5740 Valid, 475 Invalid, 11043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1204 Valid, 9839 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-18 10:51:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152750 states. [2024-11-18 10:51:32,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152750 to 127391. [2024-11-18 10:51:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127391 states, 127390 states have (on average 1.0866002040976528) internal successors, (138422), 127390 states have internal predecessors, (138422), 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 10:51:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127391 states to 127391 states and 138422 transitions. [2024-11-18 10:51:32,688 INFO L78 Accepts]: Start accepts. Automaton has 127391 states and 138422 transitions. Word has length 481 [2024-11-18 10:51:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:32,689 INFO L471 AbstractCegarLoop]: Abstraction has 127391 states and 138422 transitions. [2024-11-18 10:51:32,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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 10:51:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 127391 states and 138422 transitions. [2024-11-18 10:51:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-18 10:51:32,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:32,698 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:32,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:51:32,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 10:51:32,899 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:32,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash -166651842, now seen corresponding path program 1 times [2024-11-18 10:51:32,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:32,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496767655] [2024-11-18 10:51:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:32,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-18 10:51:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:33,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496767655] [2024-11-18 10:51:33,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496767655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:33,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:33,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:33,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160335705] [2024-11-18 10:51:33,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:33,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:33,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:33,088 INFO L87 Difference]: Start difference. First operand 127391 states and 138422 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 10:51:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:35,005 INFO L93 Difference]: Finished difference Result 263284 states and 285853 transitions. [2024-11-18 10:51:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 548 [2024-11-18 10:51:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:35,180 INFO L225 Difference]: With dead ends: 263284 [2024-11-18 10:51:35,180 INFO L226 Difference]: Without dead ends: 136317 [2024-11-18 10:51:35,265 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 10:51:35,265 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 498 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:35,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 667 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:51:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136317 states. [2024-11-18 10:51:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136317 to 131636. [2024-11-18 10:51:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131636 states, 131635 states have (on average 1.0778060546207315) internal successors, (141877), 131635 states have internal predecessors, (141877), 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 10:51:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131636 states to 131636 states and 141877 transitions. [2024-11-18 10:51:37,504 INFO L78 Accepts]: Start accepts. Automaton has 131636 states and 141877 transitions. Word has length 548 [2024-11-18 10:51:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:37,505 INFO L471 AbstractCegarLoop]: Abstraction has 131636 states and 141877 transitions. [2024-11-18 10:51:37,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 10:51:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 131636 states and 141877 transitions. [2024-11-18 10:51:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 10:51:37,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:37,536 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:37,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:51:37,537 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:37,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash 254199019, now seen corresponding path program 1 times [2024-11-18 10:51:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074635174] [2024-11-18 10:51:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-18 10:51:37,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074635174] [2024-11-18 10:51:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074635174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:37,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:37,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:37,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208919444] [2024-11-18 10:51:37,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:37,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:37,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:37,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:37,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:37,858 INFO L87 Difference]: Start difference. First operand 131636 states and 141877 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 10:51:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:39,732 INFO L93 Difference]: Finished difference Result 270944 states and 291762 transitions. [2024-11-18 10:51:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:39,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 592 [2024-11-18 10:51:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:39,907 INFO L225 Difference]: With dead ends: 270944 [2024-11-18 10:51:39,907 INFO L226 Difference]: Without dead ends: 140160 [2024-11-18 10:51:39,998 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 10:51:39,999 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 326 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:39,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 267 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:51:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140160 states.