./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.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 b86eed5380d57cac13df908fa4bd28a3c3af485a2a70f27e08920aaaec0ccb21 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:50:39,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:50:39,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:50:39,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:50:39,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:50:39,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:50:39,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:50:39,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:50:39,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:50:39,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:50:39,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:50:39,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:50:39,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:50:39,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:50:39,808 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:50:39,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:50:39,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:50:39,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:50:39,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:50:39,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:50:39,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:50:39,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:50:39,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:50:39,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:50:39,812 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:50:39,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:50:39,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:50:39,812 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:50:39,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:50:39,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:50:39,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:50:39,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:50:39,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:50:39,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:50:39,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:50:39,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:50:39,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:50:39,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:50:39,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:50:39,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:50:39,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:50:39,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:50:39,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b86eed5380d57cac13df908fa4bd28a3c3af485a2a70f27e08920aaaec0ccb21 [2024-10-24 01:50:40,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:50:40,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:50:40,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:50:40,035 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:50:40,036 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:50:40,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2024-10-24 01:50:41,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:50:41,675 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:50:41,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2024-10-24 01:50:41,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffbb5ba1a/8d958b8043524dd98bfdaf42ff8bf492/FLAGcb84fc278 [2024-10-24 01:50:41,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffbb5ba1a/8d958b8043524dd98bfdaf42ff8bf492 [2024-10-24 01:50:41,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:50:41,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:50:41,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:50:41,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:50:41,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:50:41,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:50:41" (1/1) ... [2024-10-24 01:50:41,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22212b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:41, skipping insertion in model container [2024-10-24 01:50:41,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:50:41" (1/1) ... [2024-10-24 01:50:41,753 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:50:41,943 WARN L248 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.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6696,6709] [2024-10-24 01:50:41,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:50:41,995 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:50:42,033 WARN L248 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.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6696,6709] [2024-10-24 01:50:42,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:50:42,081 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:50:42,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42 WrapperNode [2024-10-24 01:50:42,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:50:42,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:50:42,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:50:42,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:50:42,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,145 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 542 [2024-10-24 01:50:42,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:50:42,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:50:42,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:50:42,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:50:42,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,182 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]. [2024-10-24 01:50:42,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:50:42,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:50:42,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:50:42,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:50:42,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (1/1) ... [2024-10-24 01:50:42,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:50:42,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:50:42,252 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) [2024-10-24 01:50:42,259 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 [2024-10-24 01:50:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:50:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:50:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:50:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:50:42,394 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:50:42,397 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:50:42,756 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-10-24 01:50:42,757 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:50:42,786 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:50:42,787 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:50:42,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:50:42 BoogieIcfgContainer [2024-10-24 01:50:42,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:50:42,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:50:42,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:50:42,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:50:42,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:50:41" (1/3) ... [2024-10-24 01:50:42,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6ff07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:50:42, skipping insertion in model container [2024-10-24 01:50:42,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:50:42" (2/3) ... [2024-10-24 01:50:42,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6ff07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:50:42, skipping insertion in model container [2024-10-24 01:50:42,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:50:42" (3/3) ... [2024-10-24 01:50:42,794 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2024-10-24 01:50:42,808 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:50:42,809 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:50:42,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:50:42,877 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;@5dd70014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:50:42,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:50:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 113 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:50:42,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:42,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:42,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:42,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1771872812, now seen corresponding path program 1 times [2024-10-24 01:50:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213598955] [2024-10-24 01:50:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:43,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213598955] [2024-10-24 01:50:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213598955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:43,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:43,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:43,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348365501] [2024-10-24 01:50:43,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:43,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:43,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:43,458 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 113 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:43,557 INFO L93 Difference]: Finished difference Result 250 states and 412 transitions. [2024-10-24 01:50:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:43,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2024-10-24 01:50:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:43,576 INFO L225 Difference]: With dead ends: 250 [2024-10-24 01:50:43,576 INFO L226 Difference]: Without dead ends: 174 [2024-10-24 01:50:43,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:43,583 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 139 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:43,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 399 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-24 01:50:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-10-24 01:50:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.456140350877193) internal successors, (249), 171 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 249 transitions. [2024-10-24 01:50:43,628 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 249 transitions. Word has length 71 [2024-10-24 01:50:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:43,629 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 249 transitions. [2024-10-24 01:50:43,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 249 transitions. [2024-10-24 01:50:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:50:43,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:43,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:43,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:50:43,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:43,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1420191842, now seen corresponding path program 1 times [2024-10-24 01:50:43,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:43,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132492576] [2024-10-24 01:50:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:43,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:43,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132492576] [2024-10-24 01:50:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132492576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:43,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:43,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104203793] [2024-10-24 01:50:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:43,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:43,752 INFO L87 Difference]: Start difference. First operand 172 states and 249 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:43,785 INFO L93 Difference]: Finished difference Result 416 states and 637 transitions. [2024-10-24 01:50:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:43,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-24 01:50:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:43,791 INFO L225 Difference]: With dead ends: 416 [2024-10-24 01:50:43,791 INFO L226 Difference]: Without dead ends: 286 [2024-10-24 01:50:43,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:43,795 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 96 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:43,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-10-24 01:50:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2024-10-24 01:50:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.5088339222614842) internal successors, (427), 283 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 427 transitions. [2024-10-24 01:50:43,811 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 427 transitions. Word has length 72 [2024-10-24 01:50:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:43,811 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 427 transitions. [2024-10-24 01:50:43,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 427 transitions. [2024-10-24 01:50:43,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 01:50:43,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:43,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:43,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:50:43,813 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:43,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 703444096, now seen corresponding path program 1 times [2024-10-24 01:50:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532066623] [2024-10-24 01:50:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532066623] [2024-10-24 01:50:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532066623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:43,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:43,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:43,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577633266] [2024-10-24 01:50:43,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:43,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:43,883 INFO L87 Difference]: Start difference. First operand 284 states and 427 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:43,906 INFO L93 Difference]: Finished difference Result 736 states and 1145 transitions. [2024-10-24 01:50:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-24 01:50:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:43,911 INFO L225 Difference]: With dead ends: 736 [2024-10-24 01:50:43,912 INFO L226 Difference]: Without dead ends: 494 [2024-10-24 01:50:43,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:43,915 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 91 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:43,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-10-24 01:50:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 492. [2024-10-24 01:50:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.5376782077393076) internal successors, (755), 491 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 755 transitions. [2024-10-24 01:50:43,947 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 755 transitions. Word has length 73 [2024-10-24 01:50:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:43,950 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 755 transitions. [2024-10-24 01:50:43,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 755 transitions. [2024-10-24 01:50:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:50:43,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:43,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:43,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:50:43,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:43,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2124779600, now seen corresponding path program 1 times [2024-10-24 01:50:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703414012] [2024-10-24 01:50:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703414012] [2024-10-24 01:50:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703414012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:44,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297968249] [2024-10-24 01:50:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:44,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:44,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:44,065 INFO L87 Difference]: Start difference. First operand 492 states and 755 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:44,086 INFO L93 Difference]: Finished difference Result 1328 states and 2077 transitions. [2024-10-24 01:50:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:50:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:44,090 INFO L225 Difference]: With dead ends: 1328 [2024-10-24 01:50:44,091 INFO L226 Difference]: Without dead ends: 878 [2024-10-24 01:50:44,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:44,092 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:44,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 340 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-10-24 01:50:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 876. [2024-10-24 01:50:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 1.5485714285714285) internal successors, (1355), 875 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1355 transitions. [2024-10-24 01:50:44,108 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1355 transitions. Word has length 74 [2024-10-24 01:50:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:44,109 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1355 transitions. [2024-10-24 01:50:44,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1355 transitions. [2024-10-24 01:50:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 01:50:44,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:44,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:44,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:50:44,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:44,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash -496679292, now seen corresponding path program 1 times [2024-10-24 01:50:44,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:44,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75316811] [2024-10-24 01:50:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:44,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:44,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:44,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75316811] [2024-10-24 01:50:44,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75316811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:44,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:44,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:44,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344635498] [2024-10-24 01:50:44,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:44,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:44,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:44,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:44,307 INFO L87 Difference]: Start difference. First operand 876 states and 1355 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:44,342 INFO L93 Difference]: Finished difference Result 2416 states and 3773 transitions. [2024-10-24 01:50:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:44,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 01:50:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:44,355 INFO L225 Difference]: With dead ends: 2416 [2024-10-24 01:50:44,355 INFO L226 Difference]: Without dead ends: 1582 [2024-10-24 01:50:44,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:44,361 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:44,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:44,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2024-10-24 01:50:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1580. [2024-10-24 01:50:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1579 states have (on average 1.5471817606079796) internal successors, (2443), 1579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2443 transitions. [2024-10-24 01:50:44,414 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2443 transitions. Word has length 75 [2024-10-24 01:50:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:44,415 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2443 transitions. [2024-10-24 01:50:44,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2443 transitions. [2024-10-24 01:50:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:50:44,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:44,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:44,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:50:44,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:44,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 422624278, now seen corresponding path program 1 times [2024-10-24 01:50:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103097651] [2024-10-24 01:50:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:44,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103097651] [2024-10-24 01:50:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103097651] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:44,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644878815] [2024-10-24 01:50:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:44,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:44,578 INFO L87 Difference]: Start difference. First operand 1580 states and 2443 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:44,630 INFO L93 Difference]: Finished difference Result 4400 states and 6829 transitions. [2024-10-24 01:50:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 01:50:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:44,647 INFO L225 Difference]: With dead ends: 4400 [2024-10-24 01:50:44,648 INFO L226 Difference]: Without dead ends: 2862 [2024-10-24 01:50:44,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:44,655 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:44,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2024-10-24 01:50:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2860. [2024-10-24 01:50:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.5372507869884575) internal successors, (4395), 2859 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4395 transitions. [2024-10-24 01:50:44,743 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4395 transitions. Word has length 76 [2024-10-24 01:50:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:44,747 INFO L471 AbstractCegarLoop]: Abstraction has 2860 states and 4395 transitions. [2024-10-24 01:50:44,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4395 transitions. [2024-10-24 01:50:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:50:44,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:44,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:44,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:50:44,748 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:44,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash 102257632, now seen corresponding path program 1 times [2024-10-24 01:50:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298097263] [2024-10-24 01:50:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:45,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298097263] [2024-10-24 01:50:45,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298097263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:45,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:45,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:50:45,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928364011] [2024-10-24 01:50:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:45,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:50:45,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:50:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:50:45,081 INFO L87 Difference]: Start difference. First operand 2860 states and 4395 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:45,785 INFO L93 Difference]: Finished difference Result 36676 states and 56631 transitions. [2024-10-24 01:50:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 01:50:45,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-24 01:50:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:45,881 INFO L225 Difference]: With dead ends: 36676 [2024-10-24 01:50:45,881 INFO L226 Difference]: Without dead ends: 33858 [2024-10-24 01:50:45,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:50:45,895 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 1642 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:45,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 3266 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:50:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33858 states. [2024-10-24 01:50:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33858 to 5676. [2024-10-24 01:50:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.5187665198237885) internal successors, (8619), 5675 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 8619 transitions. [2024-10-24 01:50:46,245 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 8619 transitions. Word has length 77 [2024-10-24 01:50:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:46,245 INFO L471 AbstractCegarLoop]: Abstraction has 5676 states and 8619 transitions. [2024-10-24 01:50:46,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 8619 transitions. [2024-10-24 01:50:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 01:50:46,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:46,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:46,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:50:46,246 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:46,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1436483108, now seen corresponding path program 1 times [2024-10-24 01:50:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709788101] [2024-10-24 01:50:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:46,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:46,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709788101] [2024-10-24 01:50:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709788101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:46,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:46,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:50:46,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962798604] [2024-10-24 01:50:46,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:46,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:50:46,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:50:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:46,329 INFO L87 Difference]: Start difference. First operand 5676 states and 8619 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:46,399 INFO L93 Difference]: Finished difference Result 14034 states and 21327 transitions. [2024-10-24 01:50:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:50:46,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-24 01:50:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:46,423 INFO L225 Difference]: With dead ends: 14034 [2024-10-24 01:50:46,424 INFO L226 Difference]: Without dead ends: 8400 [2024-10-24 01:50:46,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:50:46,442 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:46,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 296 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2024-10-24 01:50:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8398. [2024-10-24 01:50:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.5068476836965583) internal successors, (12653), 8397 states have internal predecessors, (12653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12653 transitions. [2024-10-24 01:50:46,710 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12653 transitions. Word has length 79 [2024-10-24 01:50:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:46,710 INFO L471 AbstractCegarLoop]: Abstraction has 8398 states and 12653 transitions. [2024-10-24 01:50:46,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12653 transitions. [2024-10-24 01:50:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 01:50:46,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:46,711 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:46,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:50:46,712 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:46,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1415480453, now seen corresponding path program 1 times [2024-10-24 01:50:46,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:46,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125472761] [2024-10-24 01:50:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:46,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125472761] [2024-10-24 01:50:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125472761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:47,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:50:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328617397] [2024-10-24 01:50:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:47,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:50:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:50:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:50:47,029 INFO L87 Difference]: Start difference. First operand 8398 states and 12653 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:47,291 INFO L93 Difference]: Finished difference Result 16754 states and 25263 transitions. [2024-10-24 01:50:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:50:47,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-24 01:50:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:47,303 INFO L225 Difference]: With dead ends: 16754 [2024-10-24 01:50:47,303 INFO L226 Difference]: Without dead ends: 8400 [2024-10-24 01:50:47,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:50:47,312 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 247 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:47,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 682 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2024-10-24 01:50:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8398. [2024-10-24 01:50:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.4954150291770871) internal successors, (12557), 8397 states have internal predecessors, (12557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12557 transitions. [2024-10-24 01:50:47,508 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12557 transitions. Word has length 79 [2024-10-24 01:50:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:47,509 INFO L471 AbstractCegarLoop]: Abstraction has 8398 states and 12557 transitions. [2024-10-24 01:50:47,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12557 transitions. [2024-10-24 01:50:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 01:50:47,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:47,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:47,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:50:47,513 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:47,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash -932130398, now seen corresponding path program 1 times [2024-10-24 01:50:47,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:47,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895573234] [2024-10-24 01:50:47,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:47,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:47,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895573234] [2024-10-24 01:50:47,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895573234] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:47,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:47,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:50:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655407203] [2024-10-24 01:50:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:47,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:50:47,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:50:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:50:47,699 INFO L87 Difference]: Start difference. First operand 8398 states and 12557 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:47,823 INFO L93 Difference]: Finished difference Result 16752 states and 25070 transitions. [2024-10-24 01:50:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:50:47,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-24 01:50:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:47,836 INFO L225 Difference]: With dead ends: 16752 [2024-10-24 01:50:47,836 INFO L226 Difference]: Without dead ends: 8398 [2024-10-24 01:50:47,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:50:47,850 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 379 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:47,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 112 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2024-10-24 01:50:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8398. [2024-10-24 01:50:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8397 states have (on average 1.4839823746576157) internal successors, (12461), 8397 states have internal predecessors, (12461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 12461 transitions. [2024-10-24 01:50:48,118 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 12461 transitions. Word has length 80 [2024-10-24 01:50:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:48,118 INFO L471 AbstractCegarLoop]: Abstraction has 8398 states and 12461 transitions. [2024-10-24 01:50:48,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 12461 transitions. [2024-10-24 01:50:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 01:50:48,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:48,120 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:48,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:50:48,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:48,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1694994105, now seen corresponding path program 1 times [2024-10-24 01:50:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:48,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488070132] [2024-10-24 01:50:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:48,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:48,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488070132] [2024-10-24 01:50:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488070132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:48,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:48,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:50:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633896456] [2024-10-24 01:50:48,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:48,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:50:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:50:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:50:48,208 INFO L87 Difference]: Start difference. First operand 8398 states and 12461 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:48,367 INFO L93 Difference]: Finished difference Result 22386 states and 33327 transitions. [2024-10-24 01:50:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:50:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-24 01:50:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:48,389 INFO L225 Difference]: With dead ends: 22386 [2024-10-24 01:50:48,389 INFO L226 Difference]: Without dead ends: 14032 [2024-10-24 01:50:48,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:50:48,400 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 621 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:48,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 154 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:48,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2024-10-24 01:50:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 14030. [2024-10-24 01:50:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14030 states, 14029 states have (on average 1.4812887589992159) internal successors, (20781), 14029 states have internal predecessors, (20781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14030 states to 14030 states and 20781 transitions. [2024-10-24 01:50:48,638 INFO L78 Accepts]: Start accepts. Automaton has 14030 states and 20781 transitions. Word has length 80 [2024-10-24 01:50:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:48,638 INFO L471 AbstractCegarLoop]: Abstraction has 14030 states and 20781 transitions. [2024-10-24 01:50:48,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 14030 states and 20781 transitions. [2024-10-24 01:50:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 01:50:48,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:48,639 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:48,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:50:48,639 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:48,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 858556076, now seen corresponding path program 1 times [2024-10-24 01:50:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361112555] [2024-10-24 01:50:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:48,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361112555] [2024-10-24 01:50:48,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361112555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:48,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:48,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:50:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440984655] [2024-10-24 01:50:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:48,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:50:48,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:50:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:50:48,730 INFO L87 Difference]: Start difference. First operand 14030 states and 20781 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:48,857 INFO L93 Difference]: Finished difference Result 28016 states and 41518 transitions. [2024-10-24 01:50:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:50:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-24 01:50:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:48,879 INFO L225 Difference]: With dead ends: 28016 [2024-10-24 01:50:48,879 INFO L226 Difference]: Without dead ends: 14030 [2024-10-24 01:50:48,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:50:48,893 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 350 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:48,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 128 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2024-10-24 01:50:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 14030. [2024-10-24 01:50:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14030 states, 14029 states have (on average 1.4698838121034998) internal successors, (20621), 14029 states have internal predecessors, (20621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14030 states to 14030 states and 20621 transitions. [2024-10-24 01:50:49,148 INFO L78 Accepts]: Start accepts. Automaton has 14030 states and 20621 transitions. Word has length 80 [2024-10-24 01:50:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:49,149 INFO L471 AbstractCegarLoop]: Abstraction has 14030 states and 20621 transitions. [2024-10-24 01:50:49,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 14030 states and 20621 transitions. [2024-10-24 01:50:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 01:50:49,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:49,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:49,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:50:49,150 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:49,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1724088465, now seen corresponding path program 1 times [2024-10-24 01:50:49,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:49,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435799248] [2024-10-24 01:50:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:49,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:50:49,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435799248] [2024-10-24 01:50:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435799248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:49,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:50:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084342488] [2024-10-24 01:50:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:50:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:50:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:50:49,475 INFO L87 Difference]: Start difference. First operand 14030 states and 20621 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:49,543 INFO L93 Difference]: Finished difference Result 14544 states and 21390 transitions. [2024-10-24 01:50:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:50:49,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-24 01:50:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:49,567 INFO L225 Difference]: With dead ends: 14544 [2024-10-24 01:50:49,567 INFO L226 Difference]: Without dead ends: 14542 [2024-10-24 01:50:49,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:50:49,575 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:49,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:50:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14542 states. [2024-10-24 01:50:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14542 to 14542. [2024-10-24 01:50:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14542 states, 14541 states have (on average 1.4511381610618252) internal successors, (21101), 14541 states have internal predecessors, (21101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 21101 transitions. [2024-10-24 01:50:49,862 INFO L78 Accepts]: Start accepts. Automaton has 14542 states and 21101 transitions. Word has length 80 [2024-10-24 01:50:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:49,863 INFO L471 AbstractCegarLoop]: Abstraction has 14542 states and 21101 transitions. [2024-10-24 01:50:49,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 14542 states and 21101 transitions. [2024-10-24 01:50:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:50:49,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:49,867 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:49,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:50:49,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:49,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2063763669, now seen corresponding path program 1 times [2024-10-24 01:50:49,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482209858] [2024-10-24 01:50:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:50:50,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482209858] [2024-10-24 01:50:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482209858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:50,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:50:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439978785] [2024-10-24 01:50:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:50,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:50:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:50:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:50:50,033 INFO L87 Difference]: Start difference. First operand 14542 states and 21101 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:50,360 INFO L93 Difference]: Finished difference Result 103356 states and 150068 transitions. [2024-10-24 01:50:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:50:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 110 [2024-10-24 01:50:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:50,637 INFO L225 Difference]: With dead ends: 103356 [2024-10-24 01:50:50,637 INFO L226 Difference]: Without dead ends: 91578 [2024-10-24 01:50:50,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:50:50,669 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 1357 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:50,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 1628 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91578 states. [2024-10-24 01:50:51,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91578 to 27694. [2024-10-24 01:50:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27694 states, 27693 states have (on average 1.447188820279493) internal successors, (40077), 27693 states have internal predecessors, (40077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27694 states to 27694 states and 40077 transitions. [2024-10-24 01:50:51,685 INFO L78 Accepts]: Start accepts. Automaton has 27694 states and 40077 transitions. Word has length 110 [2024-10-24 01:50:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:51,685 INFO L471 AbstractCegarLoop]: Abstraction has 27694 states and 40077 transitions. [2024-10-24 01:50:51,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 27694 states and 40077 transitions. [2024-10-24 01:50:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:50:51,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:51,696 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:51,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:50:51,696 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:51,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1412962523, now seen corresponding path program 1 times [2024-10-24 01:50:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:51,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497060672] [2024-10-24 01:50:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:51,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:50:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497060672] [2024-10-24 01:50:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497060672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:52,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:50:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360915315] [2024-10-24 01:50:52,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:52,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:50:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:50:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:50:52,101 INFO L87 Difference]: Start difference. First operand 27694 states and 40077 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:52,660 INFO L93 Difference]: Finished difference Result 117852 states and 170996 transitions. [2024-10-24 01:50:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:50:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 110 [2024-10-24 01:50:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:52,822 INFO L225 Difference]: With dead ends: 117852 [2024-10-24 01:50:52,822 INFO L226 Difference]: Without dead ends: 103354 [2024-10-24 01:50:52,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:50:52,859 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 1358 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:52,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1574 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103354 states. [2024-10-24 01:50:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103354 to 48078. [2024-10-24 01:50:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48078 states, 48077 states have (on average 1.4432888907377748) internal successors, (69389), 48077 states have internal predecessors, (69389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48078 states to 48078 states and 69389 transitions. [2024-10-24 01:50:54,283 INFO L78 Accepts]: Start accepts. Automaton has 48078 states and 69389 transitions. Word has length 110 [2024-10-24 01:50:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:54,283 INFO L471 AbstractCegarLoop]: Abstraction has 48078 states and 69389 transitions. [2024-10-24 01:50:54,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 48078 states and 69389 transitions. [2024-10-24 01:50:54,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:50:54,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:54,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:54,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:50:54,291 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:54,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash -562474911, now seen corresponding path program 1 times [2024-10-24 01:50:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094746605] [2024-10-24 01:50:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:50:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094746605] [2024-10-24 01:50:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094746605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:54,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:54,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:50:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562979820] [2024-10-24 01:50:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:54,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:50:54,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:50:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:50:54,543 INFO L87 Difference]: Start difference. First operand 48078 states and 69389 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:55,338 INFO L93 Difference]: Finished difference Result 132348 states and 191892 transitions. [2024-10-24 01:50:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:50:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 110 [2024-10-24 01:50:55,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:55,635 INFO L225 Difference]: With dead ends: 132348 [2024-10-24 01:50:55,635 INFO L226 Difference]: Without dead ends: 117850 [2024-10-24 01:50:55,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:50:55,662 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 1445 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:55,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 1497 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117850 states. [2024-10-24 01:50:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117850 to 62574. [2024-10-24 01:50:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62574 states, 62573 states have (on average 1.4428747223243252) internal successors, (90285), 62573 states have internal predecessors, (90285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62574 states to 62574 states and 90285 transitions. [2024-10-24 01:50:56,982 INFO L78 Accepts]: Start accepts. Automaton has 62574 states and 90285 transitions. Word has length 110 [2024-10-24 01:50:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:56,982 INFO L471 AbstractCegarLoop]: Abstraction has 62574 states and 90285 transitions. [2024-10-24 01:50:56,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 62574 states and 90285 transitions. [2024-10-24 01:50:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:50:56,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:56,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:56,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:50:56,992 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:56,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2007950323, now seen corresponding path program 1 times [2024-10-24 01:50:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:56,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697541361] [2024-10-24 01:50:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:56,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:50:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:50:57,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:50:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697541361] [2024-10-24 01:50:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697541361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:50:57,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:50:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:50:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369761464] [2024-10-24 01:50:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:50:57,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:50:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:50:57,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:50:57,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:50:57,189 INFO L87 Difference]: Start difference. First operand 62574 states and 90285 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:50:57,747 INFO L93 Difference]: Finished difference Result 146844 states and 212788 transitions. [2024-10-24 01:50:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:50:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 110 [2024-10-24 01:50:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:50:57,922 INFO L225 Difference]: With dead ends: 146844 [2024-10-24 01:50:57,922 INFO L226 Difference]: Without dead ends: 132346 [2024-10-24 01:50:57,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:50:57,978 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 1365 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:50:57,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 1599 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:50:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132346 states. [2024-10-24 01:50:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132346 to 77070. [2024-10-24 01:50:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77070 states, 77069 states have (on average 1.442616356771205) internal successors, (111181), 77069 states have internal predecessors, (111181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77070 states to 77070 states and 111181 transitions. [2024-10-24 01:50:59,878 INFO L78 Accepts]: Start accepts. Automaton has 77070 states and 111181 transitions. Word has length 110 [2024-10-24 01:50:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:50:59,878 INFO L471 AbstractCegarLoop]: Abstraction has 77070 states and 111181 transitions. [2024-10-24 01:50:59,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:50:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 77070 states and 111181 transitions. [2024-10-24 01:50:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:50:59,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:50:59,891 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:50:59,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:50:59,892 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:50:59,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:50:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1133070867, now seen corresponding path program 1 times [2024-10-24 01:50:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:50:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128844922] [2024-10-24 01:50:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:50:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:50:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:51:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:51:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:51:00,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128844922] [2024-10-24 01:51:00,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128844922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:51:00,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:51:00,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:51:00,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216572762] [2024-10-24 01:51:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:51:00,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:51:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:51:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:51:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:51:00,039 INFO L87 Difference]: Start difference. First operand 77070 states and 111181 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:51:00,794 INFO L93 Difference]: Finished difference Result 161340 states and 233684 transitions. [2024-10-24 01:51:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:51:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2024-10-24 01:51:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:51:00,975 INFO L225 Difference]: With dead ends: 161340 [2024-10-24 01:51:00,975 INFO L226 Difference]: Without dead ends: 146842 [2024-10-24 01:51:01,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:51:01,024 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 1199 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:51:01,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1691 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:51:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146842 states. [2024-10-24 01:51:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146842 to 91566. [2024-10-24 01:51:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91566 states, 91565 states have (on average 1.4424397968656146) internal successors, (132077), 91565 states have internal predecessors, (132077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91566 states to 91566 states and 132077 transitions. [2024-10-24 01:51:03,580 INFO L78 Accepts]: Start accepts. Automaton has 91566 states and 132077 transitions. Word has length 110 [2024-10-24 01:51:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:51:03,580 INFO L471 AbstractCegarLoop]: Abstraction has 91566 states and 132077 transitions. [2024-10-24 01:51:03,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 91566 states and 132077 transitions. [2024-10-24 01:51:03,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:51:03,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:51:03,587 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:51:03,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:51:03,588 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:51:03,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:51:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1990971545, now seen corresponding path program 1 times [2024-10-24 01:51:03,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:51:03,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586987048] [2024-10-24 01:51:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:51:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:51:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:51:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:51:03,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:51:03,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586987048] [2024-10-24 01:51:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586987048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:51:03,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:51:03,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:51:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459999895] [2024-10-24 01:51:03,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:51:03,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:51:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:51:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:51:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:51:03,744 INFO L87 Difference]: Start difference. First operand 91566 states and 132077 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:51:04,276 INFO L93 Difference]: Finished difference Result 175836 states and 254580 transitions. [2024-10-24 01:51:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:51:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 110 [2024-10-24 01:51:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:51:04,493 INFO L225 Difference]: With dead ends: 175836 [2024-10-24 01:51:04,494 INFO L226 Difference]: Without dead ends: 161338 [2024-10-24 01:51:04,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:51:04,557 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 1203 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:51:04,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 1762 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:51:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161338 states. [2024-10-24 01:51:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161338 to 106062. [2024-10-24 01:51:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106062 states, 106061 states have (on average 1.4423114999858573) internal successors, (152973), 106061 states have internal predecessors, (152973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106062 states to 106062 states and 152973 transitions. [2024-10-24 01:51:06,535 INFO L78 Accepts]: Start accepts. Automaton has 106062 states and 152973 transitions. Word has length 110 [2024-10-24 01:51:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:51:06,535 INFO L471 AbstractCegarLoop]: Abstraction has 106062 states and 152973 transitions. [2024-10-24 01:51:06,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 106062 states and 152973 transitions. [2024-10-24 01:51:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-24 01:51:06,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:51:06,545 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:51:06,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:51:06,546 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:51:06,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:51:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1764785467, now seen corresponding path program 1 times [2024-10-24 01:51:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:51:06,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687990326] [2024-10-24 01:51:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:51:06,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:51:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:51:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:51:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:51:07,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687990326] [2024-10-24 01:51:07,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687990326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:51:07,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729222221] [2024-10-24 01:51:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:51:07,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:51:07,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:51:07,034 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) [2024-10-24 01:51:07,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:51:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:51:07,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 01:51:07,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:51:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:51:07,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:51:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:51:09,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729222221] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:51:09,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:51:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2024-10-24 01:51:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009433052] [2024-10-24 01:51:09,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:51:09,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-24 01:51:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:51:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-24 01:51:09,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2024-10-24 01:51:09,405 INFO L87 Difference]: Start difference. First operand 106062 states and 152973 transitions. Second operand has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:51:19,152 INFO L93 Difference]: Finished difference Result 1113240 states and 1583866 transitions. [2024-10-24 01:51:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-10-24 01:51:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 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 111 [2024-10-24 01:51:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:51:20,889 INFO L225 Difference]: With dead ends: 1113240 [2024-10-24 01:51:20,889 INFO L226 Difference]: Without dead ends: 1007222 [2024-10-24 01:51:21,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11954 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4491, Invalid=27015, Unknown=0, NotChecked=0, Total=31506 [2024-10-24 01:51:21,139 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 5663 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5663 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:51:21,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5663 Valid, 1944 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 01:51:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007222 states. [2024-10-24 01:51:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007222 to 591940. [2024-10-24 01:51:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591940 states, 591939 states have (on average 1.4234084931048638) internal successors, (842571), 591939 states have internal predecessors, (842571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591940 states to 591940 states and 842571 transitions. [2024-10-24 01:51:35,231 INFO L78 Accepts]: Start accepts. Automaton has 591940 states and 842571 transitions. Word has length 111 [2024-10-24 01:51:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:51:35,231 INFO L471 AbstractCegarLoop]: Abstraction has 591940 states and 842571 transitions. [2024-10-24 01:51:35,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:51:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 591940 states and 842571 transitions. [2024-10-24 01:51:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-24 01:51:35,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:51:35,279 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:51:35,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:51:35,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:51:35,480 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:51:35,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:51:35,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1934127665, now seen corresponding path program 1 times [2024-10-24 01:51:35,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:51:35,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516381002] [2024-10-24 01:51:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:51:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:51:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:51:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:51:35,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:51:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516381002] [2024-10-24 01:51:35,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516381002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:51:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021519751] [2024-10-24 01:51:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:51:35,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:51:35,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:51:35,948 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) [2024-10-24 01:51:35,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:51:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:51:36,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 01:51:36,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:51:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:51:36,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:51:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:51:37,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021519751] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:51:37,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:51:37,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 23 [2024-10-24 01:51:37,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441570735] [2024-10-24 01:51:37,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:51:37,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 01:51:37,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:51:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 01:51:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2024-10-24 01:51:37,426 INFO L87 Difference]: Start difference. First operand 591940 states and 842571 transitions. Second operand has 24 states, 24 states have (on average 12.666666666666666) internal successors, (304), 23 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)