./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label40.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/eca-rers2012/Problem12_label40.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 73a01bf72501a4d4fd9191e765f3d0f74ec404c518d5b8b0854b5c8a20d6daee --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:08:08,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:08:08,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:08:08,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:08:08,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:08:08,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:08:08,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:08:08,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:08:08,914 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:08:08,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:08:08,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:08:08,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:08:08,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:08:08,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:08:08,919 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:08:08,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:08:08,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:08:08,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:08:08,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:08:08,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:08:08,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:08:08,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:08:08,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:08:08,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:08:08,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:08:08,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:08:08,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:08:08,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:08:08,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:08:08,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:08:08,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:08:08,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:08:08,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:08:08,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:08:08,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:08:08,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:08:08,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:08:08,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:08:08,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:08:08,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:08:08,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:08:08,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:08:08,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73a01bf72501a4d4fd9191e765f3d0f74ec404c518d5b8b0854b5c8a20d6daee [2024-10-23 21:08:09,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:08:09,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:08:09,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:08:09,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:08:09,213 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:08:09,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label40.c [2024-10-23 21:08:10,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:08:11,060 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:08:11,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label40.c [2024-10-23 21:08:11,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a7259b9/4dacd2bdadc945bb82017c5e8dd5276a/FLAG65fa04c38 [2024-10-23 21:08:11,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a7259b9/4dacd2bdadc945bb82017c5e8dd5276a [2024-10-23 21:08:11,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:08:11,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:08:11,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:08:11,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:08:11,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:08:11,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:08:11" (1/1) ... [2024-10-23 21:08:11,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3860c75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:11, skipping insertion in model container [2024-10-23 21:08:11,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:08:11" (1/1) ... [2024-10-23 21:08:11,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:08:11,577 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/eca-rers2012/Problem12_label40.c[1561,1574] [2024-10-23 21:08:12,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:08:12,343 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:08:12,355 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/eca-rers2012/Problem12_label40.c[1561,1574] [2024-10-23 21:08:12,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:08:12,776 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:08:12,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12 WrapperNode [2024-10-23 21:08:12,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:08:12,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:08:12,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:08:12,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:08:12,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:12,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,171 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-23 21:08:13,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:08:13,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:08:13,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:08:13,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:08:13,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,353 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]. [2024-10-23 21:08:13,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:08:13,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:08:13,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:08:13,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:08:13,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (1/1) ... [2024-10-23 21:08:13,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:08:13,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:08:13,665 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) [2024-10-23 21:08:13,668 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 [2024-10-23 21:08:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:08:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:08:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:08:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:08:13,778 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:08:13,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:08:17,796 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-23 21:08:17,796 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:08:17,856 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:08:17,857 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:08:17,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:08:17 BoogieIcfgContainer [2024-10-23 21:08:17,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:08:17,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:08:17,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:08:17,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:08:17,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:08:11" (1/3) ... [2024-10-23 21:08:17,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638410e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:08:17, skipping insertion in model container [2024-10-23 21:08:17,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:12" (2/3) ... [2024-10-23 21:08:17,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638410e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:08:17, skipping insertion in model container [2024-10-23 21:08:17,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:08:17" (3/3) ... [2024-10-23 21:08:17,868 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label40.c [2024-10-23 21:08:17,884 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:08:17,885 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:08:17,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:08:17,987 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;@40ba7b74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:08:17,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:08:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-23 21:08:18,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:18,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:18,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:18,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash 860289824, now seen corresponding path program 1 times [2024-10-23 21:08:18,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:18,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825235530] [2024-10-23 21:08:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:18,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:18,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825235530] [2024-10-23 21:08:18,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825235530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:18,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:18,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245851714] [2024-10-23 21:08:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:18,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:08:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:08:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:08:18,208 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:18,306 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-23 21:08:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:08:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-10-23 21:08:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:18,331 INFO L225 Difference]: With dead ends: 1511 [2024-10-23 21:08:18,332 INFO L226 Difference]: Without dead ends: 754 [2024-10-23 21:08:18,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:08:18,341 INFO L432 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:18,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:08:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-23 21:08:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-23 21:08:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-23 21:08:18,424 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 8 [2024-10-23 21:08:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:18,425 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-23 21:08:18,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-23 21:08:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-23 21:08:18,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:18,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:18,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:08:18,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:18,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1417591770, now seen corresponding path program 1 times [2024-10-23 21:08:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102799575] [2024-10-23 21:08:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:18,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102799575] [2024-10-23 21:08:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102799575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266573107] [2024-10-23 21:08:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:18,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:18,536 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:21,764 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-23 21:08:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-10-23 21:08:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:21,771 INFO L225 Difference]: With dead ends: 2258 [2024-10-23 21:08:21,772 INFO L226 Difference]: Without dead ends: 1505 [2024-10-23 21:08:21,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:21,774 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 792 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:21,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 473 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:08:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-23 21:08:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-23 21:08:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6070478723404256) internal successors, (2417), 1504 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2417 transitions. [2024-10-23 21:08:21,834 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2417 transitions. Word has length 8 [2024-10-23 21:08:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:21,835 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2417 transitions. [2024-10-23 21:08:21,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2417 transitions. [2024-10-23 21:08:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-23 21:08:21,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:21,838 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:21,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:08:21,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:21,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1771050932, now seen corresponding path program 1 times [2024-10-23 21:08:21,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:21,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741912289] [2024-10-23 21:08:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741912289] [2024-10-23 21:08:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741912289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:22,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751949987] [2024-10-23 21:08:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:22,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:22,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:22,105 INFO L87 Difference]: Start difference. First operand 1505 states and 2417 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:25,310 INFO L93 Difference]: Finished difference Result 4511 states and 7248 transitions. [2024-10-23 21:08:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:25,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-10-23 21:08:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:25,322 INFO L225 Difference]: With dead ends: 4511 [2024-10-23 21:08:25,322 INFO L226 Difference]: Without dead ends: 3007 [2024-10-23 21:08:25,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:25,328 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:25,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 447 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:08:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2024-10-23 21:08:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2024-10-23 21:08:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.4158349966733201) internal successors, (4256), 3006 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4256 transitions. [2024-10-23 21:08:25,384 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4256 transitions. Word has length 83 [2024-10-23 21:08:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:25,385 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4256 transitions. [2024-10-23 21:08:25,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4256 transitions. [2024-10-23 21:08:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-23 21:08:25,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:25,389 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:25,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:08:25,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:25,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -42942567, now seen corresponding path program 1 times [2024-10-23 21:08:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209260392] [2024-10-23 21:08:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209260392] [2024-10-23 21:08:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209260392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:25,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432507269] [2024-10-23 21:08:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:25,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:08:25,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:08:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:08:25,713 INFO L87 Difference]: Start difference. First operand 3007 states and 4256 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:29,941 INFO L93 Difference]: Finished difference Result 9768 states and 13600 transitions. [2024-10-23 21:08:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:08:29,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-23 21:08:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:29,966 INFO L225 Difference]: With dead ends: 9768 [2024-10-23 21:08:29,966 INFO L226 Difference]: Without dead ends: 6762 [2024-10-23 21:08:29,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:08:29,974 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 2181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:29,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 162 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4713 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-10-23 21:08:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-10-23 21:08:30,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2024-10-23 21:08:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.3511314894246413) internal successors, (9135), 6761 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 9135 transitions. [2024-10-23 21:08:30,093 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 9135 transitions. Word has length 85 [2024-10-23 21:08:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:30,094 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 9135 transitions. [2024-10-23 21:08:30,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 9135 transitions. [2024-10-23 21:08:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-23 21:08:30,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:30,097 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:30,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:08:30,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:30,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1928102855, now seen corresponding path program 1 times [2024-10-23 21:08:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968753978] [2024-10-23 21:08:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:30,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968753978] [2024-10-23 21:08:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968753978] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:08:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412231180] [2024-10-23 21:08:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:30,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:08:30,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:08:30,521 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) [2024-10-23 21:08:30,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:08:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:30,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-23 21:08:30,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:08:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:31,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:08:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412231180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:08:32,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:08:32,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 5 [2024-10-23 21:08:32,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328042836] [2024-10-23 21:08:32,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:08:32,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 21:08:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 21:08:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:08:32,006 INFO L87 Difference]: Start difference. First operand 6762 states and 9135 transitions. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:40,316 INFO L93 Difference]: Finished difference Result 28543 states and 38681 transitions. [2024-10-23 21:08:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-23 21:08:40,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 149 [2024-10-23 21:08:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:40,387 INFO L225 Difference]: With dead ends: 28543 [2024-10-23 21:08:40,387 INFO L226 Difference]: Without dead ends: 22533 [2024-10-23 21:08:40,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:08:40,401 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 5642 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9509 mSolverCounterSat, 2484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5642 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 11993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2484 IncrementalHoareTripleChecker+Valid, 9509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:40,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5642 Valid, 147 Invalid, 11993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2484 Valid, 9509 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-10-23 21:08:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2024-10-23 21:08:40,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 16525. [2024-10-23 21:08:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16525 states, 16524 states have (on average 1.3093076736867586) internal successors, (21635), 16524 states have internal predecessors, (21635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16525 states to 16525 states and 21635 transitions. [2024-10-23 21:08:40,729 INFO L78 Accepts]: Start accepts. Automaton has 16525 states and 21635 transitions. Word has length 149 [2024-10-23 21:08:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:40,729 INFO L471 AbstractCegarLoop]: Abstraction has 16525 states and 21635 transitions. [2024-10-23 21:08:40,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 16525 states and 21635 transitions. [2024-10-23 21:08:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-23 21:08:40,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:40,732 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:40,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:08:40,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:08:40,933 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:40,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1445354157, now seen corresponding path program 1 times [2024-10-23 21:08:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:40,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098900458] [2024-10-23 21:08:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:40,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:41,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:41,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098900458] [2024-10-23 21:08:41,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098900458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:41,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:41,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:41,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821795611] [2024-10-23 21:08:41,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:41,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:08:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:08:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:08:41,293 INFO L87 Difference]: Start difference. First operand 16525 states and 21635 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:44,141 INFO L93 Difference]: Finished difference Result 37592 states and 48694 transitions. [2024-10-23 21:08:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:08:44,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2024-10-23 21:08:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:44,186 INFO L225 Difference]: With dead ends: 37592 [2024-10-23 21:08:44,186 INFO L226 Difference]: Without dead ends: 21031 [2024-10-23 21:08:44,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:08:44,209 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:44,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 631 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3704 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:08:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2024-10-23 21:08:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 20280. [2024-10-23 21:08:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 20279 states have (on average 1.2513930667192663) internal successors, (25377), 20279 states have internal predecessors, (25377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 25377 transitions. [2024-10-23 21:08:44,617 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 25377 transitions. Word has length 160 [2024-10-23 21:08:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:44,617 INFO L471 AbstractCegarLoop]: Abstraction has 20280 states and 25377 transitions. [2024-10-23 21:08:44,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 25377 transitions. [2024-10-23 21:08:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-23 21:08:44,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:44,623 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:44,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:08:44,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:44,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2071476907, now seen corresponding path program 1 times [2024-10-23 21:08:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:44,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055349756] [2024-10-23 21:08:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:08:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055349756] [2024-10-23 21:08:44,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055349756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:44,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:44,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:44,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375053156] [2024-10-23 21:08:44,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:44,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:44,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:44,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:44,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:44,766 INFO L87 Difference]: Start difference. First operand 20280 states and 25377 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:47,535 INFO L93 Difference]: Finished difference Result 48069 states and 61249 transitions. [2024-10-23 21:08:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:47,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 220 [2024-10-23 21:08:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:47,705 INFO L225 Difference]: With dead ends: 48069 [2024-10-23 21:08:47,706 INFO L226 Difference]: Without dead ends: 27790 [2024-10-23 21:08:47,726 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 [2024-10-23 21:08:47,727 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 774 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:47,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 540 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:08:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27790 states. [2024-10-23 21:08:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27790 to 20280. [2024-10-23 21:08:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 20279 states have (on average 1.2513930667192663) internal successors, (25377), 20279 states have internal predecessors, (25377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 25377 transitions. [2024-10-23 21:08:48,123 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 25377 transitions. Word has length 220 [2024-10-23 21:08:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:48,125 INFO L471 AbstractCegarLoop]: Abstraction has 20280 states and 25377 transitions. [2024-10-23 21:08:48,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 25377 transitions. [2024-10-23 21:08:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-23 21:08:48,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:48,129 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:08:48,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:08:48,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:48,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -590873744, now seen corresponding path program 1 times [2024-10-23 21:08:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237626516] [2024-10-23 21:08:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 21:08:48,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237626516] [2024-10-23 21:08:48,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237626516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:48,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:48,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963245406] [2024-10-23 21:08:48,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:48,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:48,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:48,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:48,357 INFO L87 Difference]: Start difference. First operand 20280 states and 25377 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:50,989 INFO L93 Difference]: Finished difference Result 54079 states and 68818 transitions. [2024-10-23 21:08:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:50,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 221 [2024-10-23 21:08:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:51,048 INFO L225 Difference]: With dead ends: 54079 [2024-10-23 21:08:51,156 INFO L226 Difference]: Without dead ends: 33800 [2024-10-23 21:08:51,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:51,180 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:51,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 308 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:08:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33800 states. [2024-10-23 21:08:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33800 to 31545. [2024-10-23 21:08:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31545 states, 31544 states have (on average 1.2279672837940654) internal successors, (38735), 31544 states have internal predecessors, (38735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31545 states to 31545 states and 38735 transitions. [2024-10-23 21:08:51,529 INFO L78 Accepts]: Start accepts. Automaton has 31545 states and 38735 transitions. Word has length 221 [2024-10-23 21:08:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:51,530 INFO L471 AbstractCegarLoop]: Abstraction has 31545 states and 38735 transitions. [2024-10-23 21:08:51,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 31545 states and 38735 transitions. [2024-10-23 21:08:51,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-23 21:08:51,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:51,533 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:51,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:08:51,533 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:51,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1706819236, now seen corresponding path program 1 times [2024-10-23 21:08:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104614255] [2024-10-23 21:08:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:08:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104614255] [2024-10-23 21:08:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104614255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:51,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:51,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578513550] [2024-10-23 21:08:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:51,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:51,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:51,726 INFO L87 Difference]: Start difference. First operand 31545 states and 38735 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:54,519 INFO L93 Difference]: Finished difference Result 74354 states and 92807 transitions. [2024-10-23 21:08:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-10-23 21:08:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:54,573 INFO L225 Difference]: With dead ends: 74354 [2024-10-23 21:08:54,573 INFO L226 Difference]: Without dead ends: 42810 [2024-10-23 21:08:54,595 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 [2024-10-23 21:08:54,596 INFO L432 NwaCegarLoop]: 1206 mSDtfsCounter, 766 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:54,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1213 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:08:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42810 states. [2024-10-23 21:08:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42810 to 40557. [2024-10-23 21:08:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40557 states, 40556 states have (on average 1.2051730939934904) internal successors, (48877), 40556 states have internal predecessors, (48877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40557 states to 40557 states and 48877 transitions. [2024-10-23 21:08:55,044 INFO L78 Accepts]: Start accepts. Automaton has 40557 states and 48877 transitions. Word has length 238 [2024-10-23 21:08:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:55,045 INFO L471 AbstractCegarLoop]: Abstraction has 40557 states and 48877 transitions. [2024-10-23 21:08:55,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 40557 states and 48877 transitions. [2024-10-23 21:08:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-10-23 21:08:55,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:55,049 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:55,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:08:55,049 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:55,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:55,050 INFO L85 PathProgramCache]: Analyzing trace with hash 299502206, now seen corresponding path program 1 times [2024-10-23 21:08:55,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:55,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979762565] [2024-10-23 21:08:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:55,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:55,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979762565] [2024-10-23 21:08:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979762565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393338726] [2024-10-23 21:08:55,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:55,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:55,264 INFO L87 Difference]: Start difference. First operand 40557 states and 48877 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:58,032 INFO L93 Difference]: Finished difference Result 98386 states and 118291 transitions. [2024-10-23 21:08:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:58,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2024-10-23 21:08:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:58,104 INFO L225 Difference]: With dead ends: 98386 [2024-10-23 21:08:58,104 INFO L226 Difference]: Without dead ends: 57830 [2024-10-23 21:08:58,139 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 [2024-10-23 21:08:58,140 INFO L432 NwaCegarLoop]: 1178 mSDtfsCounter, 637 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:58,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1184 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:08:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57830 states. [2024-10-23 21:08:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57830 to 57079. [2024-10-23 21:08:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57079 states, 57078 states have (on average 1.1905988296716774) internal successors, (67957), 57078 states have internal predecessors, (67957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57079 states to 57079 states and 67957 transitions. [2024-10-23 21:08:58,930 INFO L78 Accepts]: Start accepts. Automaton has 57079 states and 67957 transitions. Word has length 266 [2024-10-23 21:08:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:58,931 INFO L471 AbstractCegarLoop]: Abstraction has 57079 states and 67957 transitions. [2024-10-23 21:08:58,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57079 states and 67957 transitions. [2024-10-23 21:08:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-10-23 21:08:58,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:58,936 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:58,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:08:58,936 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:58,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 23249140, now seen corresponding path program 1 times [2024-10-23 21:08:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:58,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752137494] [2024-10-23 21:08:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:58,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:08:59,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752137494] [2024-10-23 21:08:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752137494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:59,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990550883] [2024-10-23 21:08:59,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:59,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:59,193 INFO L87 Difference]: Start difference. First operand 57079 states and 67957 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:02,108 INFO L93 Difference]: Finished difference Result 129928 states and 156971 transitions. [2024-10-23 21:09:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2024-10-23 21:09:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:02,183 INFO L225 Difference]: With dead ends: 129928 [2024-10-23 21:09:02,183 INFO L226 Difference]: Without dead ends: 72850 [2024-10-23 21:09:02,210 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 [2024-10-23 21:09:02,210 INFO L432 NwaCegarLoop]: 1280 mSDtfsCounter, 759 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:02,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1287 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:09:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72850 states. [2024-10-23 21:09:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72850 to 72850. [2024-10-23 21:09:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72850 states, 72849 states have (on average 1.1519032519320787) internal successors, (83915), 72849 states have internal predecessors, (83915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72850 states to 72850 states and 83915 transitions. [2024-10-23 21:09:03,057 INFO L78 Accepts]: Start accepts. Automaton has 72850 states and 83915 transitions. Word has length 270 [2024-10-23 21:09:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:03,058 INFO L471 AbstractCegarLoop]: Abstraction has 72850 states and 83915 transitions. [2024-10-23 21:09:03,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 72850 states and 83915 transitions. [2024-10-23 21:09:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-10-23 21:09:03,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:03,065 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:03,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:09:03,065 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:03,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2031117237, now seen corresponding path program 1 times [2024-10-23 21:09:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:03,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873000806] [2024-10-23 21:09:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:03,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:09:03,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873000806] [2024-10-23 21:09:03,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873000806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:03,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:03,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:03,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362513357] [2024-10-23 21:09:03,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:03,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:03,631 INFO L87 Difference]: Start difference. First operand 72850 states and 83915 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:06,391 INFO L93 Difference]: Finished difference Result 147952 states and 170126 transitions. [2024-10-23 21:09:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 346 [2024-10-23 21:09:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:06,466 INFO L225 Difference]: With dead ends: 147952 [2024-10-23 21:09:06,466 INFO L226 Difference]: Without dead ends: 74352 [2024-10-23 21:09:06,498 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 [2024-10-23 21:09:06,499 INFO L432 NwaCegarLoop]: 1189 mSDtfsCounter, 738 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:06,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1195 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:09:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74352 states. [2024-10-23 21:09:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74352 to 69095. [2024-10-23 21:09:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69095 states, 69094 states have (on average 1.1024546270298434) internal successors, (76173), 69094 states have internal predecessors, (76173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69095 states to 69095 states and 76173 transitions. [2024-10-23 21:09:07,546 INFO L78 Accepts]: Start accepts. Automaton has 69095 states and 76173 transitions. Word has length 346 [2024-10-23 21:09:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:07,546 INFO L471 AbstractCegarLoop]: Abstraction has 69095 states and 76173 transitions. [2024-10-23 21:09:07,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 69095 states and 76173 transitions. [2024-10-23 21:09:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-10-23 21:09:07,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:07,550 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:07,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:09:07,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:07,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash 588146865, now seen corresponding path program 1 times [2024-10-23 21:09:07,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:07,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262456213] [2024-10-23 21:09:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-10-23 21:09:07,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:07,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262456213] [2024-10-23 21:09:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262456213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:07,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:07,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:07,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143201216] [2024-10-23 21:09:07,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:07,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:07,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:07,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:07,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:07,964 INFO L87 Difference]: Start difference. First operand 69095 states and 76173 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:10,376 INFO L93 Difference]: Finished difference Result 147201 states and 162024 transitions. [2024-10-23 21:09:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:10,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2024-10-23 21:09:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:10,451 INFO L225 Difference]: With dead ends: 147201 [2024-10-23 21:09:10,451 INFO L226 Difference]: Without dead ends: 72850 [2024-10-23 21:09:10,477 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 [2024-10-23 21:09:10,477 INFO L432 NwaCegarLoop]: 1325 mSDtfsCounter, 785 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:10,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1332 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:09:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72850 states. [2024-10-23 21:09:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72850 to 63087. [2024-10-23 21:09:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63087 states, 63086 states have (on average 1.0905272168151412) internal successors, (68797), 63086 states have internal predecessors, (68797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63087 states to 63087 states and 68797 transitions. [2024-10-23 21:09:11,248 INFO L78 Accepts]: Start accepts. Automaton has 63087 states and 68797 transitions. Word has length 367 [2024-10-23 21:09:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:11,249 INFO L471 AbstractCegarLoop]: Abstraction has 63087 states and 68797 transitions. [2024-10-23 21:09:11,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 63087 states and 68797 transitions. [2024-10-23 21:09:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-10-23 21:09:11,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:11,255 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:11,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:09:11,256 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:11,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1144699687, now seen corresponding path program 1 times [2024-10-23 21:09:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211408561] [2024-10-23 21:09:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-23 21:09:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211408561] [2024-10-23 21:09:11,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211408561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:11,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:11,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339273448] [2024-10-23 21:09:11,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:11,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:11,830 INFO L87 Difference]: Start difference. First operand 63087 states and 68797 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:14,633 INFO L93 Difference]: Finished difference Result 132181 states and 143860 transitions. [2024-10-23 21:09:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:14,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 422 [2024-10-23 21:09:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:14,719 INFO L225 Difference]: With dead ends: 132181 [2024-10-23 21:09:14,719 INFO L226 Difference]: Without dead ends: 69095 [2024-10-23 21:09:14,753 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 [2024-10-23 21:09:14,754 INFO L432 NwaCegarLoop]: 1179 mSDtfsCounter, 775 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:14,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1186 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:09:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69095 states. [2024-10-23 21:09:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69095 to 66842. [2024-10-23 21:09:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66842 states, 66841 states have (on average 1.078963510420251) internal successors, (72119), 66841 states have internal predecessors, (72119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66842 states to 66842 states and 72119 transitions. [2024-10-23 21:09:15,638 INFO L78 Accepts]: Start accepts. Automaton has 66842 states and 72119 transitions. Word has length 422 [2024-10-23 21:09:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:15,639 INFO L471 AbstractCegarLoop]: Abstraction has 66842 states and 72119 transitions. [2024-10-23 21:09:15,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 66842 states and 72119 transitions. [2024-10-23 21:09:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-10-23 21:09:15,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:15,648 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:09:15,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:09:15,648 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:15,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1885247053, now seen corresponding path program 1 times [2024-10-23 21:09:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:15,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422689822] [2024-10-23 21:09:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-10-23 21:09:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422689822] [2024-10-23 21:09:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422689822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:15,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:15,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349287874] [2024-10-23 21:09:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:15,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:15,943 INFO L87 Difference]: Start difference. First operand 66842 states and 72119 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:19,074 INFO L93 Difference]: Finished difference Result 165978 states and 179835 transitions. [2024-10-23 21:09:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 444 [2024-10-23 21:09:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:19,205 INFO L225 Difference]: With dead ends: 165978 [2024-10-23 21:09:19,205 INFO L226 Difference]: Without dead ends: 99137 [2024-10-23 21:09:19,238 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 [2024-10-23 21:09:19,239 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 713 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:19,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 543 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:09:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99137 states. [2024-10-23 21:09:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99137 to 96882. [2024-10-23 21:09:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96882 states, 96881 states have (on average 1.0762172149337847) internal successors, (104265), 96881 states have internal predecessors, (104265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96882 states to 96882 states and 104265 transitions. [2024-10-23 21:09:20,408 INFO L78 Accepts]: Start accepts. Automaton has 96882 states and 104265 transitions. Word has length 444 [2024-10-23 21:09:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:20,409 INFO L471 AbstractCegarLoop]: Abstraction has 96882 states and 104265 transitions. [2024-10-23 21:09:20,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 96882 states and 104265 transitions. [2024-10-23 21:09:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-10-23 21:09:20,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:20,420 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:09:20,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:09:20,420 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:20,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -368657422, now seen corresponding path program 1 times [2024-10-23 21:09:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746138387] [2024-10-23 21:09:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 68 proven. 333 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-10-23 21:09:21,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746138387] [2024-10-23 21:09:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746138387] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:09:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573670017] [2024-10-23 21:09:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:21,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:09:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:09:21,409 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) [2024-10-23 21:09:21,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:09:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:21,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:09:21,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:09:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-23 21:09:21,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:09:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573670017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:21,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:09:21,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:09:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048838923] [2024-10-23 21:09:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:21,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:09:21,620 INFO L87 Difference]: Start difference. First operand 96882 states and 104265 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:24,285 INFO L93 Difference]: Finished difference Result 211787 states and 227858 transitions. [2024-10-23 21:09:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 446 [2024-10-23 21:09:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:24,410 INFO L225 Difference]: With dead ends: 211787 [2024-10-23 21:09:24,410 INFO L226 Difference]: Without dead ends: 114906 [2024-10-23 21:09:24,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:09:24,470 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 865 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:24,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1114 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:09:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114906 states. [2024-10-23 21:09:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114906 to 110400. [2024-10-23 21:09:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110400 states, 110399 states have (on average 1.0707343363617423) internal successors, (118208), 110399 states have internal predecessors, (118208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110400 states to 110400 states and 118208 transitions. [2024-10-23 21:09:26,077 INFO L78 Accepts]: Start accepts. Automaton has 110400 states and 118208 transitions. Word has length 446 [2024-10-23 21:09:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:26,078 INFO L471 AbstractCegarLoop]: Abstraction has 110400 states and 118208 transitions. [2024-10-23 21:09:26,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 110400 states and 118208 transitions. [2024-10-23 21:09:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-10-23 21:09:26,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:26,093 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:26,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:09:26,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 21:09:26,294 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:26,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1435989692, now seen corresponding path program 1 times [2024-10-23 21:09:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035061674] [2024-10-23 21:09:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-10-23 21:09:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035061674] [2024-10-23 21:09:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035061674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:26,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617999630] [2024-10-23 21:09:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:26,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:26,763 INFO L87 Difference]: Start difference. First operand 110400 states and 118208 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)