./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.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 3da1085986a33686aa7ffc74caa759bc9bd987d241f97554ff5ad69a436a7e40 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 21:32:16,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 21:32:16,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 21:32:16,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 21:32:16,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 21:32:16,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 21:32:16,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 21:32:16,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 21:32:16,602 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 21:32:16,602 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 21:32:16,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 21:32:16,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 21:32:16,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 21:32:16,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 21:32:16,607 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 21:32:16,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 21:32:16,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 21:32:16,608 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 21:32:16,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 21:32:16,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 21:32:16,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 21:32:16,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 21:32:16,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 21:32:16,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 21:32:16,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 21:32:16,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 21:32:16,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 21:32:16,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 21:32:16,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 21:32:16,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 21:32:16,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 21:32:16,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 21:32:16,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 21:32:16,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 21:32:16,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 21:32:16,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 21:32:16,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 21:32:16,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 21:32:16,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 21:32:16,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 21:32:16,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 21:32:16,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 21:32:16,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3da1085986a33686aa7ffc74caa759bc9bd987d241f97554ff5ad69a436a7e40 [2024-11-11 21:32:16,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 21:32:16,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 21:32:16,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 21:32:16,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 21:32:16,940 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 21:32:16,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-11 21:32:18,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 21:32:18,676 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 21:32:18,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-11 21:32:18,692 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb0d063a/ba45f0910ee44c52869c467a6c8a39bc/FLAGa49f90070 [2024-11-11 21:32:18,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb0d063a/ba45f0910ee44c52869c467a6c8a39bc [2024-11-11 21:32:18,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 21:32:18,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 21:32:18,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 21:32:18,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 21:32:18,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 21:32:18,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:32:18" (1/1) ... [2024-11-11 21:32:18,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d855229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:18, skipping insertion in model container [2024-11-11 21:32:18,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:32:18" (1/1) ... [2024-11-11 21:32:18,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 21:32:18,994 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2024-11-11 21:32:19,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 21:32:19,038 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 21:32:19,068 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2024-11-11 21:32:19,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 21:32:19,103 INFO L204 MainTranslator]: Completed translation [2024-11-11 21:32:19,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19 WrapperNode [2024-11-11 21:32:19,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 21:32:19,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 21:32:19,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 21:32:19,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 21:32:19,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,158 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 367 [2024-11-11 21:32:19,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 21:32:19,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 21:32:19,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 21:32:19,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 21:32:19,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,204 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]. [2024-11-11 21:32:19,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 21:32:19,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 21:32:19,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 21:32:19,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 21:32:19,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (1/1) ... [2024-11-11 21:32:19,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 21:32:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:19,260 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) [2024-11-11 21:32:19,262 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 [2024-11-11 21:32:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 21:32:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 21:32:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 21:32:19,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 21:32:19,404 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 21:32:19,406 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 21:32:19,825 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-11 21:32:19,825 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 21:32:19,849 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 21:32:19,849 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-11 21:32:19,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:32:19 BoogieIcfgContainer [2024-11-11 21:32:19,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 21:32:19,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 21:32:19,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 21:32:19,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 21:32:19,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 09:32:18" (1/3) ... [2024-11-11 21:32:19,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc36965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:32:19, skipping insertion in model container [2024-11-11 21:32:19,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:32:19" (2/3) ... [2024-11-11 21:32:19,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc36965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:32:19, skipping insertion in model container [2024-11-11 21:32:19,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:32:19" (3/3) ... [2024-11-11 21:32:19,860 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-11 21:32:19,876 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 21:32:19,876 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 21:32:19,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 21:32:19,948 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;@178b505d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 21:32:19,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 21:32:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-11 21:32:19,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:19,965 INFO L218 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] [2024-11-11 21:32:19,966 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:19,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1258202004, now seen corresponding path program 1 times [2024-11-11 21:32:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:19,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218707217] [2024-11-11 21:32:19,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218707217] [2024-11-11 21:32:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218707217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:20,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188550662] [2024-11-11 21:32:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:20,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:20,418 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:20,481 INFO L93 Difference]: Finished difference Result 199 states and 318 transitions. [2024-11-11 21:32:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-11 21:32:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:20,498 INFO L225 Difference]: With dead ends: 199 [2024-11-11 21:32:20,498 INFO L226 Difference]: Without dead ends: 128 [2024-11-11 21:32:20,502 INFO L434 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 [2024-11-11 21:32:20,508 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 101 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 300 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 [2024-11-11 21:32:20,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 300 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-11 21:32:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2024-11-11 21:32:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.504) internal successors, (188), 125 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2024-11-11 21:32:20,568 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 37 [2024-11-11 21:32:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:20,570 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2024-11-11 21:32:20,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,570 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2024-11-11 21:32:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-11 21:32:20,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:20,574 INFO L218 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] [2024-11-11 21:32:20,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 21:32:20,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:20,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2004783502, now seen corresponding path program 1 times [2024-11-11 21:32:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803827709] [2024-11-11 21:32:20,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:20,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:20,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803827709] [2024-11-11 21:32:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803827709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:20,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:20,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:20,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422821811] [2024-11-11 21:32:20,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:20,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:20,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:20,769 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:20,816 INFO L93 Difference]: Finished difference Result 306 states and 472 transitions. [2024-11-11 21:32:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:20,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-11 21:32:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:20,819 INFO L225 Difference]: With dead ends: 306 [2024-11-11 21:32:20,820 INFO L226 Difference]: Without dead ends: 200 [2024-11-11 21:32:20,821 INFO L434 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 [2024-11-11 21:32:20,822 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 254 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 [2024-11-11 21:32:20,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-11 21:32:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-11-11 21:32:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 197 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 301 transitions. [2024-11-11 21:32:20,840 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 301 transitions. Word has length 38 [2024-11-11 21:32:20,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:20,841 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 301 transitions. [2024-11-11 21:32:20,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 301 transitions. [2024-11-11 21:32:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-11 21:32:20,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:20,844 INFO L218 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] [2024-11-11 21:32:20,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 21:32:20,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:20,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 337157617, now seen corresponding path program 1 times [2024-11-11 21:32:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320625657] [2024-11-11 21:32:20,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:20,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320625657] [2024-11-11 21:32:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320625657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484505804] [2024-11-11 21:32:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:20,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:20,967 INFO L87 Difference]: Start difference. First operand 198 states and 301 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:20,994 INFO L93 Difference]: Finished difference Result 490 states and 759 transitions. [2024-11-11 21:32:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-11 21:32:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:20,996 INFO L225 Difference]: With dead ends: 490 [2024-11-11 21:32:20,997 INFO L226 Difference]: Without dead ends: 312 [2024-11-11 21:32:20,998 INFO L434 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 [2024-11-11 21:32:20,999 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 239 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 [2024-11-11 21:32:21,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 239 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-11 21:32:21,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2024-11-11 21:32:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.5307443365695792) internal successors, (473), 309 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 473 transitions. [2024-11-11 21:32:21,019 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 473 transitions. Word has length 39 [2024-11-11 21:32:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:21,020 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 473 transitions. [2024-11-11 21:32:21,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 473 transitions. [2024-11-11 21:32:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-11 21:32:21,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:21,023 INFO L218 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] [2024-11-11 21:32:21,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 21:32:21,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:21,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:21,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1621587317, now seen corresponding path program 1 times [2024-11-11 21:32:21,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:21,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482998433] [2024-11-11 21:32:21,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:21,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:21,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482998433] [2024-11-11 21:32:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482998433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:21,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:21,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:32:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17481146] [2024-11-11 21:32:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:21,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:21,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:21,205 INFO L87 Difference]: Start difference. First operand 310 states and 473 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:21,312 INFO L93 Difference]: Finished difference Result 1470 states and 2285 transitions. [2024-11-11 21:32:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:21,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-11 21:32:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:21,318 INFO L225 Difference]: With dead ends: 1470 [2024-11-11 21:32:21,318 INFO L226 Difference]: Without dead ends: 1180 [2024-11-11 21:32:21,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:32:21,322 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 486 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:21,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 660 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:32:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2024-11-11 21:32:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 598. [2024-11-11 21:32:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5226130653266332) internal successors, (909), 597 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 909 transitions. [2024-11-11 21:32:21,382 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 909 transitions. Word has length 40 [2024-11-11 21:32:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:21,383 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 909 transitions. [2024-11-11 21:32:21,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 909 transitions. [2024-11-11 21:32:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-11 21:32:21,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:21,385 INFO L218 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] [2024-11-11 21:32:21,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 21:32:21,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:21,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1289857042, now seen corresponding path program 1 times [2024-11-11 21:32:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233362751] [2024-11-11 21:32:21,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233362751] [2024-11-11 21:32:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233362751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:21,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:21,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:32:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835545833] [2024-11-11 21:32:21,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:21,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:21,570 INFO L87 Difference]: Start difference. First operand 598 states and 909 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:21,650 INFO L93 Difference]: Finished difference Result 2068 states and 3144 transitions. [2024-11-11 21:32:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:21,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-11 21:32:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:21,666 INFO L225 Difference]: With dead ends: 2068 [2024-11-11 21:32:21,667 INFO L226 Difference]: Without dead ends: 1490 [2024-11-11 21:32:21,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:21,671 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 323 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:21,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 330 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:32:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-11-11 21:32:21,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1486. [2024-11-11 21:32:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 1.5063973063973064) internal successors, (2237), 1485 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2237 transitions. [2024-11-11 21:32:21,727 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2237 transitions. Word has length 41 [2024-11-11 21:32:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:21,728 INFO L471 AbstractCegarLoop]: Abstraction has 1486 states and 2237 transitions. [2024-11-11 21:32:21,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2237 transitions. [2024-11-11 21:32:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 21:32:21,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:21,733 INFO L218 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] [2024-11-11 21:32:21,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 21:32:21,733 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:21,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:21,734 INFO L85 PathProgramCache]: Analyzing trace with hash 97793413, now seen corresponding path program 1 times [2024-11-11 21:32:21,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:21,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785121295] [2024-11-11 21:32:21,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:21,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785121295] [2024-11-11 21:32:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785121295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:21,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:21,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 21:32:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863870159] [2024-11-11 21:32:21,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:21,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:21,881 INFO L87 Difference]: Start difference. First operand 1486 states and 2237 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:22,056 INFO L93 Difference]: Finished difference Result 4418 states and 6671 transitions. [2024-11-11 21:32:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:22,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-11 21:32:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:22,069 INFO L225 Difference]: With dead ends: 4418 [2024-11-11 21:32:22,069 INFO L226 Difference]: Without dead ends: 2952 [2024-11-11 21:32:22,072 INFO L434 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 [2024-11-11 21:32:22,073 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:22,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 139 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:32:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2024-11-11 21:32:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2950. [2024-11-11 21:32:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2949 states have (on average 1.4991522550016956) internal successors, (4421), 2949 states have internal predecessors, (4421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4421 transitions. [2024-11-11 21:32:22,146 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4421 transitions. Word has length 43 [2024-11-11 21:32:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:22,146 INFO L471 AbstractCegarLoop]: Abstraction has 2950 states and 4421 transitions. [2024-11-11 21:32:22,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4421 transitions. [2024-11-11 21:32:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 21:32:22,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:22,148 INFO L218 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] [2024-11-11 21:32:22,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 21:32:22,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:22,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1723958080, now seen corresponding path program 1 times [2024-11-11 21:32:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265461086] [2024-11-11 21:32:22,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265461086] [2024-11-11 21:32:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265461086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:22,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:22,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:32:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028175488] [2024-11-11 21:32:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:22,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:22,473 INFO L87 Difference]: Start difference. First operand 2950 states and 4421 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:22,516 INFO L93 Difference]: Finished difference Result 3144 states and 4710 transitions. [2024-11-11 21:32:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:22,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-11 21:32:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:22,528 INFO L225 Difference]: With dead ends: 3144 [2024-11-11 21:32:22,529 INFO L226 Difference]: Without dead ends: 3142 [2024-11-11 21:32:22,530 INFO L434 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 [2024-11-11 21:32:22,531 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:22,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2024-11-11 21:32:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 3142. [2024-11-11 21:32:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.4686405603311048) internal successors, (4613), 3141 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4613 transitions. [2024-11-11 21:32:22,614 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4613 transitions. Word has length 43 [2024-11-11 21:32:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:22,614 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4613 transitions. [2024-11-11 21:32:22,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4613 transitions. [2024-11-11 21:32:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-11 21:32:22,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:22,619 INFO L218 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] [2024-11-11 21:32:22,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 21:32:22,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:22,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1913665939, now seen corresponding path program 1 times [2024-11-11 21:32:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827398558] [2024-11-11 21:32:22,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:22,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:22,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827398558] [2024-11-11 21:32:22,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827398558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:22,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:22,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:22,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356963742] [2024-11-11 21:32:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:22,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:22,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:22,704 INFO L87 Difference]: Start difference. First operand 3142 states and 4613 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:22,745 INFO L93 Difference]: Finished difference Result 7604 states and 11171 transitions. [2024-11-11 21:32:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-11 21:32:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:22,762 INFO L225 Difference]: With dead ends: 7604 [2024-11-11 21:32:22,762 INFO L226 Difference]: Without dead ends: 4482 [2024-11-11 21:32:22,770 INFO L434 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 [2024-11-11 21:32:22,772 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:22,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2024-11-11 21:32:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4480. [2024-11-11 21:32:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.4594775619557938) internal successors, (6537), 4479 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6537 transitions. [2024-11-11 21:32:22,896 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6537 transitions. Word has length 44 [2024-11-11 21:32:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:22,897 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 6537 transitions. [2024-11-11 21:32:22,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6537 transitions. [2024-11-11 21:32:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-11 21:32:22,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:22,900 INFO L218 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] [2024-11-11 21:32:22,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 21:32:22,900 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:22,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1827424966, now seen corresponding path program 1 times [2024-11-11 21:32:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606902692] [2024-11-11 21:32:22,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 21:32:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606902692] [2024-11-11 21:32:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606902692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:32:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601503223] [2024-11-11 21:32:23,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:23,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:23,097 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) [2024-11-11 21:32:23,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 21:32:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:23,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-11 21:32:23,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:32:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:23,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:32:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601503223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:32:24,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:32:24,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-11 21:32:24,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545955371] [2024-11-11 21:32:24,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:32:24,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 21:32:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:24,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 21:32:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-11 21:32:24,632 INFO L87 Difference]: Start difference. First operand 4480 states and 6537 transitions. Second operand has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:27,238 INFO L93 Difference]: Finished difference Result 25984 states and 37635 transitions. [2024-11-11 21:32:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-11 21:32:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 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 61 [2024-11-11 21:32:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:27,321 INFO L225 Difference]: With dead ends: 25984 [2024-11-11 21:32:27,321 INFO L226 Difference]: Without dead ends: 22010 [2024-11-11 21:32:27,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1239, Invalid=4923, Unknown=0, NotChecked=0, Total=6162 [2024-11-11 21:32:27,339 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 2750 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:27,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 1218 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-11 21:32:27,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22010 states. [2024-11-11 21:32:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22010 to 12320. [2024-11-11 21:32:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12320 states, 12319 states have (on average 1.4385096192872797) internal successors, (17721), 12319 states have internal predecessors, (17721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12320 states to 12320 states and 17721 transitions. [2024-11-11 21:32:27,678 INFO L78 Accepts]: Start accepts. Automaton has 12320 states and 17721 transitions. Word has length 61 [2024-11-11 21:32:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:27,678 INFO L471 AbstractCegarLoop]: Abstraction has 12320 states and 17721 transitions. [2024-11-11 21:32:27,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 12320 states and 17721 transitions. [2024-11-11 21:32:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 21:32:27,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:27,682 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:27,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 21:32:27,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:27,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:27,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash 621000165, now seen corresponding path program 1 times [2024-11-11 21:32:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:27,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156494694] [2024-11-11 21:32:27,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:27,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:27,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:27,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156494694] [2024-11-11 21:32:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156494694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:27,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:27,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031746965] [2024-11-11 21:32:27,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:27,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:27,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:27,962 INFO L87 Difference]: Start difference. First operand 12320 states and 17721 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:28,017 INFO L93 Difference]: Finished difference Result 19232 states and 27527 transitions. [2024-11-11 21:32:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:28,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-11 21:32:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:28,042 INFO L225 Difference]: With dead ends: 19232 [2024-11-11 21:32:28,042 INFO L226 Difference]: Without dead ends: 12751 [2024-11-11 21:32:28,053 INFO L434 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 [2024-11-11 21:32:28,054 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 67 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:28,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2024-11-11 21:32:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 12409. [2024-11-11 21:32:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12409 states, 12408 states have (on average 1.4104609929078014) internal successors, (17501), 12408 states have internal predecessors, (17501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12409 states to 12409 states and 17501 transitions. [2024-11-11 21:32:28,318 INFO L78 Accepts]: Start accepts. Automaton has 12409 states and 17501 transitions. Word has length 62 [2024-11-11 21:32:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:28,319 INFO L471 AbstractCegarLoop]: Abstraction has 12409 states and 17501 transitions. [2024-11-11 21:32:28,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12409 states and 17501 transitions. [2024-11-11 21:32:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 21:32:28,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:28,323 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:28,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 21:32:28,324 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:28,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2941002, now seen corresponding path program 1 times [2024-11-11 21:32:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:28,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202574669] [2024-11-11 21:32:28,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:28,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202574669] [2024-11-11 21:32:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202574669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:28,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:28,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406534704] [2024-11-11 21:32:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:28,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:28,389 INFO L87 Difference]: Start difference. First operand 12409 states and 17501 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:28,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:28,577 INFO L93 Difference]: Finished difference Result 29480 states and 41367 transitions. [2024-11-11 21:32:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:28,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-11 21:32:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:28,642 INFO L225 Difference]: With dead ends: 29480 [2024-11-11 21:32:28,642 INFO L226 Difference]: Without dead ends: 20145 [2024-11-11 21:32:28,665 INFO L434 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 [2024-11-11 21:32:28,666 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 63 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:28,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 222 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2024-11-11 21:32:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 20094. [2024-11-11 21:32:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20094 states, 20093 states have (on average 1.3845120191111333) internal successors, (27819), 20093 states have internal predecessors, (27819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20094 states to 20094 states and 27819 transitions. [2024-11-11 21:32:29,118 INFO L78 Accepts]: Start accepts. Automaton has 20094 states and 27819 transitions. Word has length 62 [2024-11-11 21:32:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:29,119 INFO L471 AbstractCegarLoop]: Abstraction has 20094 states and 27819 transitions. [2024-11-11 21:32:29,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 20094 states and 27819 transitions. [2024-11-11 21:32:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 21:32:29,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:29,123 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:29,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-11 21:32:29,124 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:29,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash 954450183, now seen corresponding path program 1 times [2024-11-11 21:32:29,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:29,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069212189] [2024-11-11 21:32:29,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:29,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069212189] [2024-11-11 21:32:29,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069212189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:29,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:29,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:29,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667496102] [2024-11-11 21:32:29,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:29,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:29,193 INFO L87 Difference]: Start difference. First operand 20094 states and 27819 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:29,294 INFO L93 Difference]: Finished difference Result 40449 states and 55859 transitions. [2024-11-11 21:32:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:29,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-11 21:32:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:29,474 INFO L225 Difference]: With dead ends: 40449 [2024-11-11 21:32:29,474 INFO L226 Difference]: Without dead ends: 22776 [2024-11-11 21:32:29,504 INFO L434 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 [2024-11-11 21:32:29,506 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:29,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22776 states. [2024-11-11 21:32:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22776 to 18973. [2024-11-11 21:32:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18973 states, 18972 states have (on average 1.3664874551971327) internal successors, (25925), 18972 states have internal predecessors, (25925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18973 states to 18973 states and 25925 transitions. [2024-11-11 21:32:29,798 INFO L78 Accepts]: Start accepts. Automaton has 18973 states and 25925 transitions. Word has length 62 [2024-11-11 21:32:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:29,798 INFO L471 AbstractCegarLoop]: Abstraction has 18973 states and 25925 transitions. [2024-11-11 21:32:29,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18973 states and 25925 transitions. [2024-11-11 21:32:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 21:32:29,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:29,804 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:29,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 21:32:29,804 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:29,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash -922232594, now seen corresponding path program 1 times [2024-11-11 21:32:29,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:29,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955209872] [2024-11-11 21:32:29,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:29,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 21:32:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:30,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955209872] [2024-11-11 21:32:30,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955209872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:30,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:30,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:32:30,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041622870] [2024-11-11 21:32:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:30,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:30,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:30,076 INFO L87 Difference]: Start difference. First operand 18973 states and 25925 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:30,258 INFO L93 Difference]: Finished difference Result 35411 states and 48911 transitions. [2024-11-11 21:32:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 62 [2024-11-11 21:32:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:30,319 INFO L225 Difference]: With dead ends: 35411 [2024-11-11 21:32:30,319 INFO L226 Difference]: Without dead ends: 29996 [2024-11-11 21:32:30,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:32:30,339 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 341 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:30,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 538 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:32:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29996 states. [2024-11-11 21:32:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29996 to 24182. [2024-11-11 21:32:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24182 states, 24181 states have (on average 1.3661966006368635) internal successors, (33036), 24181 states have internal predecessors, (33036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24182 states to 24182 states and 33036 transitions. [2024-11-11 21:32:30,900 INFO L78 Accepts]: Start accepts. Automaton has 24182 states and 33036 transitions. Word has length 62 [2024-11-11 21:32:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:30,901 INFO L471 AbstractCegarLoop]: Abstraction has 24182 states and 33036 transitions. [2024-11-11 21:32:30,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 24182 states and 33036 transitions. [2024-11-11 21:32:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 21:32:30,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:30,907 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:30,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 21:32:30,907 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:30,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2024-11-11 21:32:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054707048] [2024-11-11 21:32:30,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 21:32:31,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054707048] [2024-11-11 21:32:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054707048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:31,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:31,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:32:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165857774] [2024-11-11 21:32:31,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:31,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:31,012 INFO L87 Difference]: Start difference. First operand 24182 states and 33036 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:31,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:31,240 INFO L93 Difference]: Finished difference Result 39768 states and 54850 transitions. [2024-11-11 21:32:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:31,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 62 [2024-11-11 21:32:31,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:31,283 INFO L225 Difference]: With dead ends: 39768 [2024-11-11 21:32:31,283 INFO L226 Difference]: Without dead ends: 33516 [2024-11-11 21:32:31,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:32:31,303 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 334 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:31,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 590 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33516 states. [2024-11-11 21:32:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33516 to 29608. [2024-11-11 21:32:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29608 states, 29607 states have (on average 1.3639004289526127) internal successors, (40381), 29607 states have internal predecessors, (40381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29608 states to 29608 states and 40381 transitions. [2024-11-11 21:32:31,851 INFO L78 Accepts]: Start accepts. Automaton has 29608 states and 40381 transitions. Word has length 62 [2024-11-11 21:32:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:31,851 INFO L471 AbstractCegarLoop]: Abstraction has 29608 states and 40381 transitions. [2024-11-11 21:32:31,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 29608 states and 40381 transitions. [2024-11-11 21:32:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-11 21:32:31,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:31,860 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:32:31,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 21:32:31,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:31,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash 901849755, now seen corresponding path program 1 times [2024-11-11 21:32:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639061420] [2024-11-11 21:32:31,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 21:32:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639061420] [2024-11-11 21:32:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639061420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062127804] [2024-11-11 21:32:32,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:32,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:32,080 INFO L87 Difference]: Start difference. First operand 29608 states and 40381 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:32,210 INFO L93 Difference]: Finished difference Result 57010 states and 77803 transitions. [2024-11-11 21:32:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 63 [2024-11-11 21:32:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:32,351 INFO L225 Difference]: With dead ends: 57010 [2024-11-11 21:32:32,351 INFO L226 Difference]: Without dead ends: 27459 [2024-11-11 21:32:32,369 INFO L434 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 [2024-11-11 21:32:32,370 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:32,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 126 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27459 states. [2024-11-11 21:32:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27459 to 26424. [2024-11-11 21:32:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 26423 states have (on average 1.3475381296597662) internal successors, (35606), 26423 states have internal predecessors, (35606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 35606 transitions. [2024-11-11 21:32:32,706 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 35606 transitions. Word has length 63 [2024-11-11 21:32:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:32,706 INFO L471 AbstractCegarLoop]: Abstraction has 26424 states and 35606 transitions. [2024-11-11 21:32:32,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 35606 transitions. [2024-11-11 21:32:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-11 21:32:32,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:32,710 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:32,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-11 21:32:32,711 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:32,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash -121604344, now seen corresponding path program 1 times [2024-11-11 21:32:32,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:32,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704978783] [2024-11-11 21:32:32,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 21:32:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704978783] [2024-11-11 21:32:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704978783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:32:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437274483] [2024-11-11 21:32:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:32,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:32,944 INFO L87 Difference]: Start difference. First operand 26424 states and 35606 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:33,109 INFO L93 Difference]: Finished difference Result 43644 states and 59363 transitions. [2024-11-11 21:32:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 63 [2024-11-11 21:32:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:33,153 INFO L225 Difference]: With dead ends: 43644 [2024-11-11 21:32:33,153 INFO L226 Difference]: Without dead ends: 36266 [2024-11-11 21:32:33,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:32:33,170 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 323 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:33,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 534 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36266 states. [2024-11-11 21:32:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36266 to 32000. [2024-11-11 21:32:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32000 states, 31999 states have (on average 1.345760805025157) internal successors, (43063), 31999 states have internal predecessors, (43063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32000 states to 32000 states and 43063 transitions. [2024-11-11 21:32:33,683 INFO L78 Accepts]: Start accepts. Automaton has 32000 states and 43063 transitions. Word has length 63 [2024-11-11 21:32:33,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:33,683 INFO L471 AbstractCegarLoop]: Abstraction has 32000 states and 43063 transitions. [2024-11-11 21:32:33,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 32000 states and 43063 transitions. [2024-11-11 21:32:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-11 21:32:33,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:33,687 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:33,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-11 21:32:33,688 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:33,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash 746654310, now seen corresponding path program 1 times [2024-11-11 21:32:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38892471] [2024-11-11 21:32:33,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 21:32:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38892471] [2024-11-11 21:32:33,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38892471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:33,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:33,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 21:32:33,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123433370] [2024-11-11 21:32:33,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:33,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:32:33,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:33,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:32:33,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:32:33,780 INFO L87 Difference]: Start difference. First operand 32000 states and 43063 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:34,133 INFO L93 Difference]: Finished difference Result 73686 states and 98989 transitions. [2024-11-11 21:32:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:32:34,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-11-11 21:32:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:34,177 INFO L225 Difference]: With dead ends: 73686 [2024-11-11 21:32:34,177 INFO L226 Difference]: Without dead ends: 41748 [2024-11-11 21:32:34,196 INFO L434 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 [2024-11-11 21:32:34,197 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 437 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:34,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 141 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:32:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41748 states. [2024-11-11 21:32:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41748 to 41290. [2024-11-11 21:32:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41290 states, 41289 states have (on average 1.3309598198067283) internal successors, (54954), 41289 states have internal predecessors, (54954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41290 states to 41290 states and 54954 transitions. [2024-11-11 21:32:34,677 INFO L78 Accepts]: Start accepts. Automaton has 41290 states and 54954 transitions. Word has length 67 [2024-11-11 21:32:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:34,677 INFO L471 AbstractCegarLoop]: Abstraction has 41290 states and 54954 transitions. [2024-11-11 21:32:34,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 41290 states and 54954 transitions. [2024-11-11 21:32:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-11 21:32:34,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:34,682 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:34,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-11 21:32:34,683 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:34,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1698199029, now seen corresponding path program 1 times [2024-11-11 21:32:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888078427] [2024-11-11 21:32:34,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:35,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:35,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888078427] [2024-11-11 21:32:35,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888078427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:32:35,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794178758] [2024-11-11 21:32:35,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:35,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:35,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:35,072 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) [2024-11-11 21:32:35,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 21:32:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:35,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 21:32:35,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:32:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:35,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:32:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794178758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:32:35,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:32:35,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-11 21:32:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950413465] [2024-11-11 21:32:35,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:32:35,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 21:32:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 21:32:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-11 21:32:35,550 INFO L87 Difference]: Start difference. First operand 41290 states and 54954 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:36,094 INFO L93 Difference]: Finished difference Result 95797 states and 127788 transitions. [2024-11-11 21:32:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 21:32:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-11 21:32:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:36,192 INFO L225 Difference]: With dead ends: 95797 [2024-11-11 21:32:36,192 INFO L226 Difference]: Without dead ends: 71523 [2024-11-11 21:32:36,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-11 21:32:36,235 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 836 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:36,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 349 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:32:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71523 states. [2024-11-11 21:32:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71523 to 49309. [2024-11-11 21:32:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49309 states, 49308 states have (on average 1.3309604932262513) internal successors, (65627), 49308 states have internal predecessors, (65627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49309 states to 49309 states and 65627 transitions. [2024-11-11 21:32:37,080 INFO L78 Accepts]: Start accepts. Automaton has 49309 states and 65627 transitions. Word has length 67 [2024-11-11 21:32:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:37,080 INFO L471 AbstractCegarLoop]: Abstraction has 49309 states and 65627 transitions. [2024-11-11 21:32:37,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 49309 states and 65627 transitions. [2024-11-11 21:32:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-11 21:32:37,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:37,086 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:37,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 21:32:37,286 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,SelfDestructingSolverStorable17 [2024-11-11 21:32:37,287 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:37,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2024-11-11 21:32:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711617930] [2024-11-11 21:32:37,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:37,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:37,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711617930] [2024-11-11 21:32:37,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711617930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:32:37,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541018377] [2024-11-11 21:32:37,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:37,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:37,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:37,431 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) [2024-11-11 21:32:37,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 21:32:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:37,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 21:32:37,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:32:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:37,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:32:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:37,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541018377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:32:37,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:32:37,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-11 21:32:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755430697] [2024-11-11 21:32:37,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:32:37,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 21:32:37,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 21:32:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-11 21:32:37,849 INFO L87 Difference]: Start difference. First operand 49309 states and 65627 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:38,625 INFO L93 Difference]: Finished difference Result 90142 states and 119455 transitions. [2024-11-11 21:32:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 21:32:38,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 67 [2024-11-11 21:32:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:38,716 INFO L225 Difference]: With dead ends: 90142 [2024-11-11 21:32:38,716 INFO L226 Difference]: Without dead ends: 65208 [2024-11-11 21:32:38,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-11 21:32:38,732 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 421 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:38,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 428 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:32:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65208 states. [2024-11-11 21:32:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65208 to 53463. [2024-11-11 21:32:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53463 states, 53462 states have (on average 1.3266806329729528) internal successors, (70927), 53462 states have internal predecessors, (70927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53463 states to 53463 states and 70927 transitions. [2024-11-11 21:32:39,550 INFO L78 Accepts]: Start accepts. Automaton has 53463 states and 70927 transitions. Word has length 67 [2024-11-11 21:32:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:39,551 INFO L471 AbstractCegarLoop]: Abstraction has 53463 states and 70927 transitions. [2024-11-11 21:32:39,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 53463 states and 70927 transitions. [2024-11-11 21:32:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-11 21:32:39,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:39,558 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:32:39,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 21:32:39,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:39,758 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:39,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003109, now seen corresponding path program 1 times [2024-11-11 21:32:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:39,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942588952] [2024-11-11 21:32:39,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:39,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:39,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:39,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942588952] [2024-11-11 21:32:39,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942588952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:32:39,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641161144] [2024-11-11 21:32:39,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:39,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:39,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:39,950 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) [2024-11-11 21:32:39,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 21:32:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:40,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 21:32:40,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:32:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:40,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:32:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:40,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641161144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:32:40,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:32:40,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-11 21:32:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629584154] [2024-11-11 21:32:40,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:32:40,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 21:32:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 21:32:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-11 21:32:40,354 INFO L87 Difference]: Start difference. First operand 53463 states and 70927 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:40,759 INFO L93 Difference]: Finished difference Result 102816 states and 135980 transitions. [2024-11-11 21:32:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 21:32:40,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 68 [2024-11-11 21:32:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:40,832 INFO L225 Difference]: With dead ends: 102816 [2024-11-11 21:32:40,832 INFO L226 Difference]: Without dead ends: 62867 [2024-11-11 21:32:40,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-11 21:32:40,867 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 651 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:40,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 276 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:32:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62867 states. [2024-11-11 21:32:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62867 to 53856. [2024-11-11 21:32:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53856 states, 53855 states have (on average 1.3217528548881254) internal successors, (71183), 53855 states have internal predecessors, (71183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53856 states to 53856 states and 71183 transitions. [2024-11-11 21:32:41,894 INFO L78 Accepts]: Start accepts. Automaton has 53856 states and 71183 transitions. Word has length 68 [2024-11-11 21:32:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:41,895 INFO L471 AbstractCegarLoop]: Abstraction has 53856 states and 71183 transitions. [2024-11-11 21:32:41,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 53856 states and 71183 transitions. [2024-11-11 21:32:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-11 21:32:41,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:41,900 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:41,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 21:32:42,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:42,101 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:42,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:42,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1497418122, now seen corresponding path program 1 times [2024-11-11 21:32:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254191708] [2024-11-11 21:32:42,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:42,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:42,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:42,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254191708] [2024-11-11 21:32:42,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254191708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:32:42,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201635578] [2024-11-11 21:32:42,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:42,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:42,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:42,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:32:42,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 21:32:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:42,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 21:32:42,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:32:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:43,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:32:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:43,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201635578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:32:43,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:32:43,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-11 21:32:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402001708] [2024-11-11 21:32:43,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:32:43,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-11 21:32:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-11 21:32:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-11 21:32:43,930 INFO L87 Difference]: Start difference. First operand 53856 states and 71183 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:45,384 INFO L93 Difference]: Finished difference Result 230774 states and 304555 transitions. [2024-11-11 21:32:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-11 21:32:45,385 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 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 69 [2024-11-11 21:32:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:45,633 INFO L225 Difference]: With dead ends: 230774 [2024-11-11 21:32:45,633 INFO L226 Difference]: Without dead ends: 176805 [2024-11-11 21:32:45,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2024-11-11 21:32:45,712 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 1228 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:45,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1002 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 21:32:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176805 states. [2024-11-11 21:32:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176805 to 105934. [2024-11-11 21:32:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105934 states, 105933 states have (on average 1.3084119207423561) internal successors, (138604), 105933 states have internal predecessors, (138604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105934 states to 105934 states and 138604 transitions. [2024-11-11 21:32:47,761 INFO L78 Accepts]: Start accepts. Automaton has 105934 states and 138604 transitions. Word has length 69 [2024-11-11 21:32:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:47,761 INFO L471 AbstractCegarLoop]: Abstraction has 105934 states and 138604 transitions. [2024-11-11 21:32:47,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 105934 states and 138604 transitions. [2024-11-11 21:32:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-11 21:32:47,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:47,768 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-11 21:32:47,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-11 21:32:47,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:47,969 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:47,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1871560551, now seen corresponding path program 1 times [2024-11-11 21:32:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:47,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269728469] [2024-11-11 21:32:47,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:48,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269728469] [2024-11-11 21:32:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269728469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:32:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997465544] [2024-11-11 21:32:48,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:48,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:48,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:32:48,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:32:48,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 21:32:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:48,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 21:32:48,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:32:49,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:49,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:32:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997465544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:32:50,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:32:50,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-11 21:32:50,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746461155] [2024-11-11 21:32:50,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:32:50,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-11 21:32:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-11 21:32:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-11 21:32:50,021 INFO L87 Difference]: Start difference. First operand 105934 states and 138604 transitions. Second operand has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:51,197 INFO L93 Difference]: Finished difference Result 238028 states and 310649 transitions. [2024-11-11 21:32:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-11 21:32:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 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 69 [2024-11-11 21:32:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:51,529 INFO L225 Difference]: With dead ends: 238028 [2024-11-11 21:32:51,530 INFO L226 Difference]: Without dead ends: 199694 [2024-11-11 21:32:51,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 21:32:51,618 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 627 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:51,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 951 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 21:32:51,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199694 states. [2024-11-11 21:32:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199694 to 169469. [2024-11-11 21:32:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169469 states, 169468 states have (on average 1.3076273986829372) internal successors, (221601), 169468 states have internal predecessors, (221601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169469 states to 169469 states and 221601 transitions. [2024-11-11 21:32:54,856 INFO L78 Accepts]: Start accepts. Automaton has 169469 states and 221601 transitions. Word has length 69 [2024-11-11 21:32:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:54,857 INFO L471 AbstractCegarLoop]: Abstraction has 169469 states and 221601 transitions. [2024-11-11 21:32:54,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 169469 states and 221601 transitions. [2024-11-11 21:32:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-11 21:32:54,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:54,874 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:32:54,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 21:32:55,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:32:55,076 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:55,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1988307597, now seen corresponding path program 1 times [2024-11-11 21:32:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455989258] [2024-11-11 21:32:55,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 21:32:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455989258] [2024-11-11 21:32:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455989258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:55,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643893572] [2024-11-11 21:32:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:55,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:55,122 INFO L87 Difference]: Start difference. First operand 169469 states and 221601 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:55,894 INFO L93 Difference]: Finished difference Result 327334 states and 428600 transitions. [2024-11-11 21:32:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:55,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 70 [2024-11-11 21:32:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:32:56,125 INFO L225 Difference]: With dead ends: 327334 [2024-11-11 21:32:56,125 INFO L226 Difference]: Without dead ends: 157966 [2024-11-11 21:32:56,237 INFO L434 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 [2024-11-11 21:32:56,237 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 69 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:32:56,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 97 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:32:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157966 states. [2024-11-11 21:32:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157966 to 157506. [2024-11-11 21:32:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157506 states, 157505 states have (on average 1.2972286594076379) internal successors, (204320), 157505 states have internal predecessors, (204320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157506 states to 157506 states and 204320 transitions. [2024-11-11 21:32:59,259 INFO L78 Accepts]: Start accepts. Automaton has 157506 states and 204320 transitions. Word has length 70 [2024-11-11 21:32:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:32:59,259 INFO L471 AbstractCegarLoop]: Abstraction has 157506 states and 204320 transitions. [2024-11-11 21:32:59,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 157506 states and 204320 transitions. [2024-11-11 21:32:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-11 21:32:59,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:32:59,265 INFO L218 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] [2024-11-11 21:32:59,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-11 21:32:59,266 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:32:59,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:32:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash -65493609, now seen corresponding path program 1 times [2024-11-11 21:32:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:32:59,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413126570] [2024-11-11 21:32:59,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:32:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:32:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:32:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:32:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:32:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413126570] [2024-11-11 21:32:59,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413126570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:32:59,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:32:59,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:32:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139962840] [2024-11-11 21:32:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:32:59,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:32:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:32:59,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:32:59,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:32:59,321 INFO L87 Difference]: Start difference. First operand 157506 states and 204320 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:32:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:32:59,925 INFO L93 Difference]: Finished difference Result 211828 states and 274237 transitions. [2024-11-11 21:32:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:32:59,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-11 21:32:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:33:00,980 INFO L225 Difference]: With dead ends: 211828 [2024-11-11 21:33:00,980 INFO L226 Difference]: Without dead ends: 142737 [2024-11-11 21:33:01,060 INFO L434 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 [2024-11-11 21:33:01,061 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 54 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:33:01,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 264 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:33:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142737 states. [2024-11-11 21:33:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142737 to 142719. [2024-11-11 21:33:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142719 states, 142718 states have (on average 1.2773931809582533) internal successors, (182307), 142718 states have internal predecessors, (182307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142719 states to 142719 states and 182307 transitions. [2024-11-11 21:33:03,051 INFO L78 Accepts]: Start accepts. Automaton has 142719 states and 182307 transitions. Word has length 70 [2024-11-11 21:33:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:33:03,051 INFO L471 AbstractCegarLoop]: Abstraction has 142719 states and 182307 transitions. [2024-11-11 21:33:03,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:03,052 INFO L276 IsEmpty]: Start isEmpty. Operand 142719 states and 182307 transitions. [2024-11-11 21:33:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-11 21:33:03,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:33:03,057 INFO L218 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] [2024-11-11 21:33:03,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-11 21:33:03,058 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:33:03,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:33:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -303813183, now seen corresponding path program 1 times [2024-11-11 21:33:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:33:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907991023] [2024-11-11 21:33:03,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:33:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:33:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:33:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:33:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:33:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907991023] [2024-11-11 21:33:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907991023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:33:03,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:33:03,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:33:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067527411] [2024-11-11 21:33:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:33:03,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:33:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:33:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:33:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:33:03,106 INFO L87 Difference]: Start difference. First operand 142719 states and 182307 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:33:03,480 INFO L93 Difference]: Finished difference Result 174209 states and 222077 transitions. [2024-11-11 21:33:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:33:03,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-11 21:33:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:33:03,641 INFO L225 Difference]: With dead ends: 174209 [2024-11-11 21:33:03,641 INFO L226 Difference]: Without dead ends: 121563 [2024-11-11 21:33:03,694 INFO L434 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 [2024-11-11 21:33:03,695 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:33:03,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:33:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121563 states. [2024-11-11 21:33:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121563 to 121561. [2024-11-11 21:33:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121561 states, 121560 states have (on average 1.258390918065153) internal successors, (152970), 121560 states have internal predecessors, (152970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121561 states to 121561 states and 152970 transitions. [2024-11-11 21:33:06,470 INFO L78 Accepts]: Start accepts. Automaton has 121561 states and 152970 transitions. Word has length 70 [2024-11-11 21:33:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:33:06,471 INFO L471 AbstractCegarLoop]: Abstraction has 121561 states and 152970 transitions. [2024-11-11 21:33:06,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 121561 states and 152970 transitions. [2024-11-11 21:33:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-11 21:33:06,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:33:06,477 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:33:06,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-11 21:33:06,477 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:33:06,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:33:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 30251444, now seen corresponding path program 1 times [2024-11-11 21:33:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:33:06,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293000265] [2024-11-11 21:33:06,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:33:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:33:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:33:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-11 21:33:06,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:33:06,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293000265] [2024-11-11 21:33:06,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293000265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:33:06,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:33:06,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:33:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862991435] [2024-11-11 21:33:06,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:33:06,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:33:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:33:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:33:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:33:06,517 INFO L87 Difference]: Start difference. First operand 121561 states and 152970 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:33:07,082 INFO L93 Difference]: Finished difference Result 228207 states and 287768 transitions. [2024-11-11 21:33:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:33:07,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 70 [2024-11-11 21:33:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:33:07,224 INFO L225 Difference]: With dead ends: 228207 [2024-11-11 21:33:07,225 INFO L226 Difference]: Without dead ends: 106709 [2024-11-11 21:33:07,294 INFO L434 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 [2024-11-11 21:33:07,294 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 81 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:33:07,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:33:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106709 states. [2024-11-11 21:33:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106709 to 101969. [2024-11-11 21:33:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101969 states, 101968 states have (on average 1.2403891416915112) internal successors, (126480), 101968 states have internal predecessors, (126480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101969 states to 101969 states and 126480 transitions. [2024-11-11 21:33:09,036 INFO L78 Accepts]: Start accepts. Automaton has 101969 states and 126480 transitions. Word has length 70 [2024-11-11 21:33:09,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:33:09,036 INFO L471 AbstractCegarLoop]: Abstraction has 101969 states and 126480 transitions. [2024-11-11 21:33:09,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 101969 states and 126480 transitions. [2024-11-11 21:33:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-11 21:33:09,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:33:09,041 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:33:09,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-11 21:33:09,041 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:33:09,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:33:09,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1497444211, now seen corresponding path program 1 times [2024-11-11 21:33:09,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:33:09,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672796028] [2024-11-11 21:33:09,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:33:09,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:33:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:33:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 21:33:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:33:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672796028] [2024-11-11 21:33:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672796028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:33:09,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:33:09,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:33:09,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250975683] [2024-11-11 21:33:09,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:33:09,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:33:09,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:33:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:33:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:33:09,082 INFO L87 Difference]: Start difference. First operand 101969 states and 126480 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:33:09,980 INFO L93 Difference]: Finished difference Result 131402 states and 163420 transitions. [2024-11-11 21:33:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:33:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 71 [2024-11-11 21:33:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:33:10,087 INFO L225 Difference]: With dead ends: 131402 [2024-11-11 21:33:10,087 INFO L226 Difference]: Without dead ends: 88436 [2024-11-11 21:33:10,122 INFO L434 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 [2024-11-11 21:33:10,122 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 74 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:33:10,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 177 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:33:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88436 states. [2024-11-11 21:33:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88436 to 88130. [2024-11-11 21:33:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88130 states, 88129 states have (on average 1.240772050062976) internal successors, (109348), 88129 states have internal predecessors, (109348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88130 states to 88130 states and 109348 transitions. [2024-11-11 21:33:11,491 INFO L78 Accepts]: Start accepts. Automaton has 88130 states and 109348 transitions. Word has length 71 [2024-11-11 21:33:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:33:11,491 INFO L471 AbstractCegarLoop]: Abstraction has 88130 states and 109348 transitions. [2024-11-11 21:33:11,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:33:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 88130 states and 109348 transitions. [2024-11-11 21:33:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-11 21:33:11,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:33:11,497 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:33:11,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-11 21:33:11,498 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:33:11,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:33:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash -570785947, now seen corresponding path program 1 times [2024-11-11 21:33:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:33:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920701500] [2024-11-11 21:33:11,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:33:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:33:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:33:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:33:12,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:33:12,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920701500] [2024-11-11 21:33:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920701500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:33:12,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359303506] [2024-11-11 21:33:12,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:33:12,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:33:12,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:33:12,313 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:33:12,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 21:33:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:33:12,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-11 21:33:12,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:33:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:33:14,076 INFO L312 TraceCheckSpWp]: Computing backward predicates...