./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:52:19,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:52:19,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:52:19,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:52:19,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:52:19,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:52:19,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:52:19,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:52:19,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:52:19,345 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:52:19,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:52:19,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:52:19,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:52:19,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:52:19,348 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:52:19,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:52:19,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:52:19,349 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:52:19,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:52:19,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:52:19,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:52:19,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:52:19,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:52:19,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:52:19,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:52:19,353 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:52:19,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:52:19,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:52:19,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:52:19,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:52:19,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:52:19,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:52:19,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:52:19,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:52:19,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:52:19,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:52:19,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:52:19,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:52:19,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:52:19,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:52:19,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:52:19,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:52:19,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 [2024-11-19 22:52:19,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:52:19,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:52:19,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:52:19,582 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:52:19,583 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:52:19,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-19 22:52:20,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:52:21,152 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:52:21,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-19 22:52:21,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa626058/bf9ac93c136b4aa5bce0d773c63b8e43/FLAGde2fd51c7 [2024-11-19 22:52:21,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa626058/bf9ac93c136b4aa5bce0d773c63b8e43 [2024-11-19 22:52:21,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:52:21,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:52:21,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:52:21,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:52:21,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:52:21,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64df7af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21, skipping insertion in model container [2024-11-19 22:52:21,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:52:21,733 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2024-11-19 22:52:21,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:52:21,773 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:52:21,799 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2024-11-19 22:52:21,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:52:21,834 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:52:21,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21 WrapperNode [2024-11-19 22:52:21,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:52:21,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:52:21,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:52:21,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:52:21,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,866 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 375 [2024-11-19 22:52:21,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:52:21,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:52:21,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:52:21,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:52:21,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,913 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 22:52:21,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:52:21,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:52:21,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:52:21,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:52:21,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (1/1) ... [2024-11-19 22:52:21,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:52:21,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:21,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 22:52:21,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 22:52:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:52:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:52:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:52:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:52:22,147 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:52:22,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:52:22,567 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-19 22:52:22,568 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:52:22,584 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:52:22,585 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 22:52:22,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:52:22 BoogieIcfgContainer [2024-11-19 22:52:22,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:52:22,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:52:22,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:52:22,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:52:22,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:52:21" (1/3) ... [2024-11-19 22:52:22,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3518bcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:52:22, skipping insertion in model container [2024-11-19 22:52:22,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:52:21" (2/3) ... [2024-11-19 22:52:22,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3518bcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:52:22, skipping insertion in model container [2024-11-19 22:52:22,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:52:22" (3/3) ... [2024-11-19 22:52:22,596 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-19 22:52:22,607 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:52:22,608 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:52:22,655 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:52:22,660 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;@4471d2b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:52:22,662 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:52:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 22:52:22,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:22,674 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:22,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:22,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash -347547403, now seen corresponding path program 1 times [2024-11-19 22:52:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505882452] [2024-11-19 22:52:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:22,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505882452] [2024-11-19 22:52:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505882452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:22,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:22,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419306561] [2024-11-19 22:52:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:22,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:22,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:22,975 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:23,010 INFO L93 Difference]: Finished difference Result 177 states and 286 transitions. [2024-11-19 22:52:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:23,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-19 22:52:23,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:23,019 INFO L225 Difference]: With dead ends: 177 [2024-11-19 22:52:23,019 INFO L226 Difference]: Without dead ends: 118 [2024-11-19 22:52:23,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,025 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:23,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-19 22:52:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-11-19 22:52:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 115 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 169 transitions. [2024-11-19 22:52:23,054 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 169 transitions. Word has length 47 [2024-11-19 22:52:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:23,054 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 169 transitions. [2024-11-19 22:52:23,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 169 transitions. [2024-11-19 22:52:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 22:52:23,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:23,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:23,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:52:23,056 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:23,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash -391185874, now seen corresponding path program 1 times [2024-11-19 22:52:23,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:23,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485212707] [2024-11-19 22:52:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:23,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:23,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:23,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485212707] [2024-11-19 22:52:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485212707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:23,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:23,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:23,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420738015] [2024-11-19 22:52:23,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:23,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:23,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:23,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,146 INFO L87 Difference]: Start difference. First operand 116 states and 169 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:23,165 INFO L93 Difference]: Finished difference Result 280 states and 429 transitions. [2024-11-19 22:52:23,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-19 22:52:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:23,167 INFO L225 Difference]: With dead ends: 280 [2024-11-19 22:52:23,167 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 22:52:23,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,168 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:23,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 22:52:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-11-19 22:52:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5133689839572193) internal successors, (283), 187 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 283 transitions. [2024-11-19 22:52:23,180 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 283 transitions. Word has length 48 [2024-11-19 22:52:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:23,180 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 283 transitions. [2024-11-19 22:52:23,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,181 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 283 transitions. [2024-11-19 22:52:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 22:52:23,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:23,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:23,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:52:23,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:23,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:23,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2047730124, now seen corresponding path program 1 times [2024-11-19 22:52:23,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:23,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336902858] [2024-11-19 22:52:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:23,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336902858] [2024-11-19 22:52:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336902858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:23,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:23,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520786013] [2024-11-19 22:52:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:23,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,252 INFO L87 Difference]: Start difference. First operand 188 states and 283 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:23,269 INFO L93 Difference]: Finished difference Result 480 states and 745 transitions. [2024-11-19 22:52:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-19 22:52:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:23,274 INFO L225 Difference]: With dead ends: 480 [2024-11-19 22:52:23,274 INFO L226 Difference]: Without dead ends: 318 [2024-11-19 22:52:23,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,289 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:23,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-19 22:52:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2024-11-19 22:52:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.5333333333333334) internal successors, (483), 315 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 483 transitions. [2024-11-19 22:52:23,305 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 483 transitions. Word has length 49 [2024-11-19 22:52:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:23,305 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 483 transitions. [2024-11-19 22:52:23,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 483 transitions. [2024-11-19 22:52:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 22:52:23,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:23,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:23,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:52:23,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:23,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash -415311335, now seen corresponding path program 1 times [2024-11-19 22:52:23,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:23,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602534692] [2024-11-19 22:52:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602534692] [2024-11-19 22:52:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602534692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149337482] [2024-11-19 22:52:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:23,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,396 INFO L87 Difference]: Start difference. First operand 316 states and 483 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:23,420 INFO L93 Difference]: Finished difference Result 832 states and 1293 transitions. [2024-11-19 22:52:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:23,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-19 22:52:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:23,425 INFO L225 Difference]: With dead ends: 832 [2024-11-19 22:52:23,425 INFO L226 Difference]: Without dead ends: 542 [2024-11-19 22:52:23,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,428 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:23,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 229 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-19 22:52:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2024-11-19 22:52:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.5343228200371057) internal successors, (827), 539 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 827 transitions. [2024-11-19 22:52:23,463 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 827 transitions. Word has length 50 [2024-11-19 22:52:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:23,463 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 827 transitions. [2024-11-19 22:52:23,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 827 transitions. [2024-11-19 22:52:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 22:52:23,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:23,464 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:23,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:52:23,465 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:23,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash -103942672, now seen corresponding path program 1 times [2024-11-19 22:52:23,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730751843] [2024-11-19 22:52:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730751843] [2024-11-19 22:52:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730751843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:23,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:23,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:52:23,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122758665] [2024-11-19 22:52:23,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:23,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:52:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:52:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:52:23,633 INFO L87 Difference]: Start difference. First operand 540 states and 827 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:23,772 INFO L93 Difference]: Finished difference Result 4652 states and 7235 transitions. [2024-11-19 22:52:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 22:52:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-19 22:52:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:23,783 INFO L225 Difference]: With dead ends: 4652 [2024-11-19 22:52:23,783 INFO L226 Difference]: Without dead ends: 4138 [2024-11-19 22:52:23,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:52:23,785 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 784 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:23,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 993 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:52:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2024-11-19 22:52:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 1052. [2024-11-19 22:52:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.5176022835394862) internal successors, (1595), 1051 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1595 transitions. [2024-11-19 22:52:23,834 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1595 transitions. Word has length 51 [2024-11-19 22:52:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:23,835 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1595 transitions. [2024-11-19 22:52:23,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1595 transitions. [2024-11-19 22:52:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 22:52:23,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:23,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:23,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:52:23,837 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:23,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2026482100, now seen corresponding path program 1 times [2024-11-19 22:52:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502591768] [2024-11-19 22:52:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:23,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:23,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502591768] [2024-11-19 22:52:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502591768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:23,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310089403] [2024-11-19 22:52:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:23,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:23,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:23,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:23,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,946 INFO L87 Difference]: Start difference. First operand 1052 states and 1595 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:23,980 INFO L93 Difference]: Finished difference Result 2570 states and 3911 transitions. [2024-11-19 22:52:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:23,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-19 22:52:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:23,988 INFO L225 Difference]: With dead ends: 2570 [2024-11-19 22:52:23,988 INFO L226 Difference]: Without dead ends: 1544 [2024-11-19 22:52:23,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:23,990 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:23,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 201 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-19 22:52:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2024-11-19 22:52:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.5035691109669047) internal successors, (2317), 1541 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2317 transitions. [2024-11-19 22:52:24,011 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2317 transitions. Word has length 53 [2024-11-19 22:52:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:24,013 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2317 transitions. [2024-11-19 22:52:24,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2317 transitions. [2024-11-19 22:52:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 22:52:24,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:24,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:24,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:52:24,014 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2005479445, now seen corresponding path program 1 times [2024-11-19 22:52:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024643963] [2024-11-19 22:52:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:24,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:24,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024643963] [2024-11-19 22:52:24,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024643963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:24,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:52:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971003299] [2024-11-19 22:52:24,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:24,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:52:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:52:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:52:24,245 INFO L87 Difference]: Start difference. First operand 1542 states and 2317 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:24,335 INFO L93 Difference]: Finished difference Result 3058 states and 4607 transitions. [2024-11-19 22:52:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:52:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-19 22:52:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:24,339 INFO L225 Difference]: With dead ends: 3058 [2024-11-19 22:52:24,339 INFO L226 Difference]: Without dead ends: 1544 [2024-11-19 22:52:24,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:52:24,341 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 208 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:24,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 324 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-19 22:52:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2024-11-19 22:52:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4879948085658663) internal successors, (2293), 1541 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2293 transitions. [2024-11-19 22:52:24,359 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2293 transitions. Word has length 53 [2024-11-19 22:52:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:24,360 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2293 transitions. [2024-11-19 22:52:24,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2293 transitions. [2024-11-19 22:52:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 22:52:24,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:24,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:24,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:52:24,362 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:24,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2042230043, now seen corresponding path program 1 times [2024-11-19 22:52:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:24,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676358889] [2024-11-19 22:52:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:24,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676358889] [2024-11-19 22:52:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676358889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:24,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:24,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:52:24,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209389468] [2024-11-19 22:52:24,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:24,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:52:24,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:52:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:52:24,502 INFO L87 Difference]: Start difference. First operand 1542 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:24,601 INFO L93 Difference]: Finished difference Result 4082 states and 6111 transitions. [2024-11-19 22:52:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:52:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-19 22:52:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:24,606 INFO L225 Difference]: With dead ends: 4082 [2024-11-19 22:52:24,607 INFO L226 Difference]: Without dead ends: 2568 [2024-11-19 22:52:24,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:52:24,610 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 432 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:24,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 109 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:52:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2024-11-19 22:52:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2024-11-19 22:52:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4865497076023393) internal successors, (3813), 2565 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3813 transitions. [2024-11-19 22:52:24,656 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3813 transitions. Word has length 54 [2024-11-19 22:52:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:24,657 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3813 transitions. [2024-11-19 22:52:24,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3813 transitions. [2024-11-19 22:52:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 22:52:24,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:24,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:24,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:52:24,658 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:24,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1489873546, now seen corresponding path program 1 times [2024-11-19 22:52:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:24,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740822675] [2024-11-19 22:52:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740822675] [2024-11-19 22:52:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740822675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:52:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537452343] [2024-11-19 22:52:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:24,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:52:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:52:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:52:24,739 INFO L87 Difference]: Start difference. First operand 2566 states and 3813 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:24,801 INFO L93 Difference]: Finished difference Result 5104 states and 7598 transitions. [2024-11-19 22:52:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:52:24,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-19 22:52:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:24,807 INFO L225 Difference]: With dead ends: 5104 [2024-11-19 22:52:24,807 INFO L226 Difference]: Without dead ends: 2566 [2024-11-19 22:52:24,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:52:24,810 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 262 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:24,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 75 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-11-19 22:52:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2024-11-19 22:52:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.470955165692008) internal successors, (3773), 2565 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3773 transitions. [2024-11-19 22:52:24,841 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3773 transitions. Word has length 54 [2024-11-19 22:52:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:24,841 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3773 transitions. [2024-11-19 22:52:24,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3773 transitions. [2024-11-19 22:52:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 22:52:24,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:24,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:24,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:52:24,842 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:24,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1617958853, now seen corresponding path program 1 times [2024-11-19 22:52:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803459136] [2024-11-19 22:52:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803459136] [2024-11-19 22:52:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803459136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:24,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:24,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:52:24,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890220304] [2024-11-19 22:52:24,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:24,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:52:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:52:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:52:24,903 INFO L87 Difference]: Start difference. First operand 2566 states and 3773 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:24,963 INFO L93 Difference]: Finished difference Result 5104 states and 7518 transitions. [2024-11-19 22:52:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:52:24,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-19 22:52:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:24,969 INFO L225 Difference]: With dead ends: 5104 [2024-11-19 22:52:24,969 INFO L226 Difference]: Without dead ends: 2566 [2024-11-19 22:52:24,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:52:24,971 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 246 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:24,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 83 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-11-19 22:52:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2024-11-19 22:52:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4553606237816765) internal successors, (3733), 2565 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3733 transitions. [2024-11-19 22:52:25,003 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3733 transitions. Word has length 54 [2024-11-19 22:52:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:25,003 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3733 transitions. [2024-11-19 22:52:25,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3733 transitions. [2024-11-19 22:52:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 22:52:25,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:25,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:25,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 22:52:25,005 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:25,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1811476054, now seen corresponding path program 1 times [2024-11-19 22:52:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:25,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753876197] [2024-11-19 22:52:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753876197] [2024-11-19 22:52:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753876197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:25,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:25,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:52:25,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110439875] [2024-11-19 22:52:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:25,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:52:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:25,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:52:25,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:52:25,164 INFO L87 Difference]: Start difference. First operand 2566 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:25,185 INFO L93 Difference]: Finished difference Result 2696 states and 3926 transitions. [2024-11-19 22:52:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:52:25,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-19 22:52:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:25,191 INFO L225 Difference]: With dead ends: 2696 [2024-11-19 22:52:25,191 INFO L226 Difference]: Without dead ends: 2694 [2024-11-19 22:52:25,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:52:25,192 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:25,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 388 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2024-11-19 22:52:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2694. [2024-11-19 22:52:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 1.4307463795024136) internal successors, (3853), 2693 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3853 transitions. [2024-11-19 22:52:25,222 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3853 transitions. Word has length 54 [2024-11-19 22:52:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:25,222 INFO L471 AbstractCegarLoop]: Abstraction has 2694 states and 3853 transitions. [2024-11-19 22:52:25,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3853 transitions. [2024-11-19 22:52:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:52:25,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:25,223 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:25,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 22:52:25,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:25,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1690284398, now seen corresponding path program 1 times [2024-11-19 22:52:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:25,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73024388] [2024-11-19 22:52:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:25,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:52:25,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:25,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73024388] [2024-11-19 22:52:25,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73024388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:25,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:25,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:52:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817101617] [2024-11-19 22:52:25,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:25,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:52:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:52:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:52:25,334 INFO L87 Difference]: Start difference. First operand 2694 states and 3853 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:25,440 INFO L93 Difference]: Finished difference Result 13720 states and 19666 transitions. [2024-11-19 22:52:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:52:25,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-19 22:52:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:25,473 INFO L225 Difference]: With dead ends: 13720 [2024-11-19 22:52:25,473 INFO L226 Difference]: Without dead ends: 11542 [2024-11-19 22:52:25,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:52:25,479 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 478 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:25,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 524 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2024-11-19 22:52:25,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 5118. [2024-11-19 22:52:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5117 states have (on average 1.426812585499316) internal successors, (7301), 5117 states have internal predecessors, (7301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7301 transitions. [2024-11-19 22:52:25,578 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7301 transitions. Word has length 76 [2024-11-19 22:52:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:25,579 INFO L471 AbstractCegarLoop]: Abstraction has 5118 states and 7301 transitions. [2024-11-19 22:52:25,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7301 transitions. [2024-11-19 22:52:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:52:25,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:25,581 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:25,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 22:52:25,581 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:25,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash -34257664, now seen corresponding path program 1 times [2024-11-19 22:52:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135813740] [2024-11-19 22:52:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:25,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 22:52:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135813740] [2024-11-19 22:52:25,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135813740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:25,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:25,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:52:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786025005] [2024-11-19 22:52:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:25,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:52:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:52:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:52:25,694 INFO L87 Difference]: Start difference. First operand 5118 states and 7301 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:25,781 INFO L93 Difference]: Finished difference Result 16384 states and 23458 transitions. [2024-11-19 22:52:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:52:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-19 22:52:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:25,801 INFO L225 Difference]: With dead ends: 16384 [2024-11-19 22:52:25,801 INFO L226 Difference]: Without dead ends: 13718 [2024-11-19 22:52:25,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:52:25,808 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 492 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:25,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 588 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2024-11-19 22:52:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 8870. [2024-11-19 22:52:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8869 states have (on average 1.4221445484271056) internal successors, (12613), 8869 states have internal predecessors, (12613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 12613 transitions. [2024-11-19 22:52:25,931 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 12613 transitions. Word has length 76 [2024-11-19 22:52:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:25,931 INFO L471 AbstractCegarLoop]: Abstraction has 8870 states and 12613 transitions. [2024-11-19 22:52:25,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 12613 transitions. [2024-11-19 22:52:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:52:25,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:25,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:25,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 22:52:25,933 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:25,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1119688442, now seen corresponding path program 1 times [2024-11-19 22:52:25,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:25,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867932131] [2024-11-19 22:52:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:25,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 22:52:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867932131] [2024-11-19 22:52:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867932131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:52:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241579483] [2024-11-19 22:52:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:26,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:52:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:52:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:52:26,024 INFO L87 Difference]: Start difference. First operand 8870 states and 12613 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:26,120 INFO L93 Difference]: Finished difference Result 19048 states and 27242 transitions. [2024-11-19 22:52:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:52:26,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-19 22:52:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:26,141 INFO L225 Difference]: With dead ends: 19048 [2024-11-19 22:52:26,141 INFO L226 Difference]: Without dead ends: 16382 [2024-11-19 22:52:26,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:52:26,147 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 442 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:26,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 631 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16382 states. [2024-11-19 22:52:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16382 to 11534. [2024-11-19 22:52:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 11533 states have (on average 1.4217462932454694) internal successors, (16397), 11533 states have internal predecessors, (16397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 16397 transitions. [2024-11-19 22:52:26,320 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 16397 transitions. Word has length 76 [2024-11-19 22:52:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:26,320 INFO L471 AbstractCegarLoop]: Abstraction has 11534 states and 16397 transitions. [2024-11-19 22:52:26,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 16397 transitions. [2024-11-19 22:52:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:52:26,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:26,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:26,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 22:52:26,322 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:26,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 261787764, now seen corresponding path program 1 times [2024-11-19 22:52:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:26,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768693304] [2024-11-19 22:52:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 22:52:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768693304] [2024-11-19 22:52:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768693304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:52:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107892391] [2024-11-19 22:52:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:26,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:52:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:52:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:52:26,407 INFO L87 Difference]: Start difference. First operand 11534 states and 16397 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:26,511 INFO L93 Difference]: Finished difference Result 21712 states and 31026 transitions. [2024-11-19 22:52:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:52:26,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-19 22:52:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:26,539 INFO L225 Difference]: With dead ends: 21712 [2024-11-19 22:52:26,539 INFO L226 Difference]: Without dead ends: 19046 [2024-11-19 22:52:26,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:52:26,546 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 480 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:26,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 615 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2024-11-19 22:52:26,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 14198. [2024-11-19 22:52:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14198 states, 14197 states have (on average 1.4214974994717193) internal successors, (20181), 14197 states have internal predecessors, (20181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 20181 transitions. [2024-11-19 22:52:26,741 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 20181 transitions. Word has length 76 [2024-11-19 22:52:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:26,741 INFO L471 AbstractCegarLoop]: Abstraction has 14198 states and 20181 transitions. [2024-11-19 22:52:26,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 20181 transitions. [2024-11-19 22:52:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-19 22:52:26,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:26,743 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:26,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 22:52:26,744 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:26,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1414120063, now seen corresponding path program 1 times [2024-11-19 22:52:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025449203] [2024-11-19 22:52:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:52:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025449203] [2024-11-19 22:52:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025449203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:52:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552100756] [2024-11-19 22:52:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:26,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:26,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:26,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:52:26,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:52:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:26,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 22:52:26,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:27,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:28,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552100756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:28,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:28,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-19 22:52:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795435733] [2024-11-19 22:52:28,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:28,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 22:52:28,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 22:52:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-19 22:52:28,078 INFO L87 Difference]: Start difference. First operand 14198 states and 20181 transitions. Second operand has 20 states, 20 states have (on average 10.6) internal successors, (212), 20 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:29,739 INFO L93 Difference]: Finished difference Result 89148 states and 126670 transitions. [2024-11-19 22:52:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-19 22:52:29,740 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.6) internal successors, (212), 20 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-19 22:52:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:29,840 INFO L225 Difference]: With dead ends: 89148 [2024-11-19 22:52:29,840 INFO L226 Difference]: Without dead ends: 74978 [2024-11-19 22:52:29,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1035, Invalid=3935, Unknown=0, NotChecked=0, Total=4970 [2024-11-19 22:52:29,870 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 2549 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:29,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 1048 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 22:52:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74978 states. [2024-11-19 22:52:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74978 to 56760. [2024-11-19 22:52:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56760 states, 56759 states have (on average 1.3923959195898448) internal successors, (79031), 56759 states have internal predecessors, (79031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56760 states to 56760 states and 79031 transitions. [2024-11-19 22:52:30,575 INFO L78 Accepts]: Start accepts. Automaton has 56760 states and 79031 transitions. Word has length 77 [2024-11-19 22:52:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:30,575 INFO L471 AbstractCegarLoop]: Abstraction has 56760 states and 79031 transitions. [2024-11-19 22:52:30,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.6) internal successors, (212), 20 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 56760 states and 79031 transitions. [2024-11-19 22:52:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:52:30,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:30,578 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:30,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 22:52:30,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 22:52:30,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:30,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash -968717224, now seen corresponding path program 1 times [2024-11-19 22:52:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767925553] [2024-11-19 22:52:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:31,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:31,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767925553] [2024-11-19 22:52:31,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767925553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:52:31,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353408607] [2024-11-19 22:52:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:31,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:31,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:52:31,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 22:52:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:31,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 22:52:31,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:31,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353408607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:32,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:32,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 22:52:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118755204] [2024-11-19 22:52:32,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:32,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 22:52:32,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 22:52:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-19 22:52:32,134 INFO L87 Difference]: Start difference. First operand 56760 states and 79031 transitions. Second operand has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:33,331 INFO L93 Difference]: Finished difference Result 213026 states and 296751 transitions. [2024-11-19 22:52:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 22:52:33,331 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:52:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:33,668 INFO L225 Difference]: With dead ends: 213026 [2024-11-19 22:52:33,669 INFO L226 Difference]: Without dead ends: 156294 [2024-11-19 22:52:33,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 22:52:33,742 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 1720 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:33,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 761 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 22:52:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156294 states. [2024-11-19 22:52:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156294 to 97742. [2024-11-19 22:52:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97742 states, 97741 states have (on average 1.381027409173223) internal successors, (134983), 97741 states have internal predecessors, (134983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97742 states to 97742 states and 134983 transitions. [2024-11-19 22:52:35,261 INFO L78 Accepts]: Start accepts. Automaton has 97742 states and 134983 transitions. Word has length 78 [2024-11-19 22:52:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:35,261 INFO L471 AbstractCegarLoop]: Abstraction has 97742 states and 134983 transitions. [2024-11-19 22:52:35,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 97742 states and 134983 transitions. [2024-11-19 22:52:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:52:35,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:35,266 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:35,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 22:52:35,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 22:52:35,470 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:35,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash 635552222, now seen corresponding path program 1 times [2024-11-19 22:52:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:35,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248729229] [2024-11-19 22:52:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:35,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248729229] [2024-11-19 22:52:36,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248729229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:52:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253655670] [2024-11-19 22:52:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:36,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:36,044 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) [2024-11-19 22:52:36,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 22:52:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:36,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 22:52:36,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:36,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:37,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253655670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:37,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 22:52:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700737889] [2024-11-19 22:52:37,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:37,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 22:52:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 22:52:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-19 22:52:37,011 INFO L87 Difference]: Start difference. First operand 97742 states and 134983 transitions. Second operand has 21 states, 21 states have (on average 8.476190476190476) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:38,865 INFO L93 Difference]: Finished difference Result 440122 states and 605025 transitions. [2024-11-19 22:52:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 22:52:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.476190476190476) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:52:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:39,327 INFO L225 Difference]: With dead ends: 440122 [2024-11-19 22:52:39,328 INFO L226 Difference]: Without dead ends: 342408 [2024-11-19 22:52:39,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 22:52:39,426 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 860 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:39,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 843 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 22:52:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342408 states. [2024-11-19 22:52:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342408 to 204730. [2024-11-19 22:52:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204730 states, 204729 states have (on average 1.3701722765216457) internal successors, (280514), 204729 states have internal predecessors, (280514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204730 states to 204730 states and 280514 transitions. [2024-11-19 22:52:43,491 INFO L78 Accepts]: Start accepts. Automaton has 204730 states and 280514 transitions. Word has length 78 [2024-11-19 22:52:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:43,491 INFO L471 AbstractCegarLoop]: Abstraction has 204730 states and 280514 transitions. [2024-11-19 22:52:43,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.476190476190476) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 204730 states and 280514 transitions. [2024-11-19 22:52:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-19 22:52:43,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:43,500 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:43,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 22:52:43,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 22:52:43,701 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:43,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1417022205, now seen corresponding path program 1 times [2024-11-19 22:52:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:43,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023287297] [2024-11-19 22:52:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:43,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:43,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023287297] [2024-11-19 22:52:43,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023287297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:43,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:43,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:43,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360816288] [2024-11-19 22:52:43,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:43,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:43,763 INFO L87 Difference]: Start difference. First operand 204730 states and 280514 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:45,397 INFO L93 Difference]: Finished difference Result 402914 states and 552525 transitions. [2024-11-19 22:52:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-19 22:52:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:45,686 INFO L225 Difference]: With dead ends: 402914 [2024-11-19 22:52:45,686 INFO L226 Difference]: Without dead ends: 198212 [2024-11-19 22:52:45,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:45,775 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 46 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:45,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 225 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198212 states. [2024-11-19 22:52:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198212 to 194490. [2024-11-19 22:52:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194490 states, 194489 states have (on average 1.3501946125487816) internal successors, (262598), 194489 states have internal predecessors, (262598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194490 states to 194490 states and 262598 transitions. [2024-11-19 22:52:49,137 INFO L78 Accepts]: Start accepts. Automaton has 194490 states and 262598 transitions. Word has length 79 [2024-11-19 22:52:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:49,138 INFO L471 AbstractCegarLoop]: Abstraction has 194490 states and 262598 transitions. [2024-11-19 22:52:49,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:52:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 194490 states and 262598 transitions. [2024-11-19 22:52:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-19 22:52:49,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:49,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:49,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 22:52:49,144 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:49,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1571427843, now seen corresponding path program 1 times [2024-11-19 22:52:49,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:49,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908247418] [2024-11-19 22:52:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:49,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:49,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908247418] [2024-11-19 22:52:49,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908247418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:52:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348827706] [2024-11-19 22:52:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:49,584 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) [2024-11-19 22:52:49,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 22:52:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:49,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 22:52:49,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:54,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348827706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:55,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:55,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 17] total 43 [2024-11-19 22:52:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877085335] [2024-11-19 22:52:55,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:55,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 22:52:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 22:52:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 22:52:55,624 INFO L87 Difference]: Start difference. First operand 194490 states and 262598 transitions. Second operand has 43 states, 43 states have (on average 5.116279069767442) internal successors, (220), 43 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:53:14,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]