./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6cb8ee599d957b44e84b6deda03837f10d12ce4870b06e5310d491ec68c724f7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 04:48:40,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 04:48:40,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 04:48:40,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 04:48:40,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 04:48:40,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 04:48:40,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 04:48:40,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 04:48:40,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 04:48:40,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 04:48:40,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 04:48:40,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 04:48:40,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 04:48:40,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 04:48:40,886 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 04:48:40,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 04:48:40,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 04:48:40,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 04:48:40,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 04:48:40,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 04:48:40,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 04:48:40,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 04:48:40,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 04:48:40,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 04:48:40,892 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 04:48:40,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 04:48:40,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 04:48:40,892 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 04:48:40,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 04:48:40,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 04:48:40,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 04:48:40,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 04:48:40,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:48:40,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 04:48:40,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 04:48:40,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 04:48:40,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 04:48:40,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 04:48:40,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 04:48:40,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 04:48:40,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 04:48:40,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 04:48:40,896 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb8ee599d957b44e84b6deda03837f10d12ce4870b06e5310d491ec68c724f7 [2024-10-11 04:48:41,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 04:48:41,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 04:48:41,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 04:48:41,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 04:48:41,180 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 04:48:41,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c [2024-10-11 04:48:42,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 04:48:43,096 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 04:48:43,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c [2024-10-11 04:48:43,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6d3bd4861/c796c9a887d74f16a111fcfa3d721900/FLAGb0a6b65ee [2024-10-11 04:48:43,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6d3bd4861/c796c9a887d74f16a111fcfa3d721900 [2024-10-11 04:48:43,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 04:48:43,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 04:48:43,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 04:48:43,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 04:48:43,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 04:48:43,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:48:43" (1/1) ... [2024-10-11 04:48:43,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a348ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:43, skipping insertion in model container [2024-10-11 04:48:43,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:48:43" (1/1) ... [2024-10-11 04:48:43,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 04:48:43,706 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c[11640,11653] [2024-10-11 04:48:43,743 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c[13977,13990] [2024-10-11 04:48:44,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:48:44,466 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 04:48:44,506 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c[11640,11653] [2024-10-11 04:48:44,514 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c[13977,13990] [2024-10-11 04:48:44,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:48:45,000 INFO L204 MainTranslator]: Completed translation [2024-10-11 04:48:45,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45 WrapperNode [2024-10-11 04:48:45,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 04:48:45,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 04:48:45,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 04:48:45,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 04:48:45,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,412 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5099 [2024-10-11 04:48:45,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 04:48:45,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 04:48:45,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 04:48:45,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 04:48:45,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,744 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]. [2024-10-11 04:48:45,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:45,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:46,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:46,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 04:48:46,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 04:48:46,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 04:48:46,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 04:48:46,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (1/1) ... [2024-10-11 04:48:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:48:46,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:48:46,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 04:48:46,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 04:48:46,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 04:48:46,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 04:48:46,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 04:48:46,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 04:48:46,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 04:48:46,251 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 04:48:50,554 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-10-11 04:48:50,555 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 04:48:50,635 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 04:48:50,636 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 04:48:50,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:48:50 BoogieIcfgContainer [2024-10-11 04:48:50,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 04:48:50,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 04:48:50,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 04:48:50,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 04:48:50,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:48:43" (1/3) ... [2024-10-11 04:48:50,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692caa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:48:50, skipping insertion in model container [2024-10-11 04:48:50,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:48:45" (2/3) ... [2024-10-11 04:48:50,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692caa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:48:50, skipping insertion in model container [2024-10-11 04:48:50,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:48:50" (3/3) ... [2024-10-11 04:48:50,646 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c [2024-10-11 04:48:50,663 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 04:48:50,664 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 04:48:50,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 04:48:50,768 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;@228916ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 04:48:50,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 04:48:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:48:50,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:50,788 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:50,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:50,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 59447333, now seen corresponding path program 1 times [2024-10-11 04:48:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635244476] [2024-10-11 04:48:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:51,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:51,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635244476] [2024-10-11 04:48:51,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635244476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:51,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:51,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:48:51,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365188648] [2024-10-11 04:48:51,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:51,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 04:48:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 04:48:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 04:48:51,071 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:51,214 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2024-10-11 04:48:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 04:48:51,216 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:48:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:51,242 INFO L225 Difference]: With dead ends: 1633 [2024-10-11 04:48:51,242 INFO L226 Difference]: Without dead ends: 830 [2024-10-11 04:48:51,251 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 [2024-10-11 04:48:51,257 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:51,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-10-11 04:48:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2024-10-11 04:48:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2024-10-11 04:48:51,346 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 19 [2024-10-11 04:48:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:51,347 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2024-10-11 04:48:51,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2024-10-11 04:48:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:48:51,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:51,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:51,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 04:48:51,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash -778166733, now seen corresponding path program 1 times [2024-10-11 04:48:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787951599] [2024-10-11 04:48:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:51,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:51,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:51,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787951599] [2024-10-11 04:48:51,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787951599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:51,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:51,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:48:51,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049527455] [2024-10-11 04:48:51,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:51,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:51,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:51,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:51,519 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:54,806 INFO L93 Difference]: Finished difference Result 2334 states and 4444 transitions. [2024-10-11 04:48:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:48:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:54,815 INFO L225 Difference]: With dead ends: 2334 [2024-10-11 04:48:54,816 INFO L226 Difference]: Without dead ends: 1581 [2024-10-11 04:48:54,818 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 [2024-10-11 04:48:54,819 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 914 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:54,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 604 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-11 04:48:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2024-10-11 04:48:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2024-10-11 04:48:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.6149461684610513) internal successors, (2550), 1580 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2550 transitions. [2024-10-11 04:48:54,868 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2550 transitions. Word has length 19 [2024-10-11 04:48:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:54,869 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2550 transitions. [2024-10-11 04:48:54,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2550 transitions. [2024-10-11 04:48:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 04:48:54,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:54,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:54,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 04:48:54,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:54,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash 891911913, now seen corresponding path program 1 times [2024-10-11 04:48:54,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:54,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513006325] [2024-10-11 04:48:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:55,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513006325] [2024-10-11 04:48:55,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513006325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:55,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:55,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:48:55,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129809844] [2024-10-11 04:48:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:55,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:48:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:48:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:48:55,079 INFO L87 Difference]: Start difference. First operand 1581 states and 2550 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:55,157 INFO L93 Difference]: Finished difference Result 1625 states and 2619 transitions. [2024-10-11 04:48:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:48:55,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-10-11 04:48:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:55,164 INFO L225 Difference]: With dead ends: 1625 [2024-10-11 04:48:55,164 INFO L226 Difference]: Without dead ends: 1581 [2024-10-11 04:48:55,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:48:55,166 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:55,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2024-10-11 04:48:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2024-10-11 04:48:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.5953134895503482) internal successors, (2519), 1580 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2519 transitions. [2024-10-11 04:48:55,199 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2519 transitions. Word has length 21 [2024-10-11 04:48:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:55,202 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2519 transitions. [2024-10-11 04:48:55,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2519 transitions. [2024-10-11 04:48:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 04:48:55,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:55,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:55,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 04:48:55,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:55,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1081643968, now seen corresponding path program 1 times [2024-10-11 04:48:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463014059] [2024-10-11 04:48:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463014059] [2024-10-11 04:48:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463014059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:55,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:48:55,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75422275] [2024-10-11 04:48:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:55,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:48:55,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:48:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:48:55,480 INFO L87 Difference]: Start difference. First operand 1581 states and 2519 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:55,739 INFO L93 Difference]: Finished difference Result 1991 states and 3179 transitions. [2024-10-11 04:48:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 04:48:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-11 04:48:55,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:55,747 INFO L225 Difference]: With dead ends: 1991 [2024-10-11 04:48:55,747 INFO L226 Difference]: Without dead ends: 1950 [2024-10-11 04:48:55,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-11 04:48:55,752 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:55,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:48:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2024-10-11 04:48:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1620. [2024-10-11 04:48:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.5957972805933252) internal successors, (2582), 1619 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2582 transitions. [2024-10-11 04:48:55,787 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2582 transitions. Word has length 51 [2024-10-11 04:48:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:55,788 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2582 transitions. [2024-10-11 04:48:55,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2582 transitions. [2024-10-11 04:48:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 04:48:55,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:55,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:55,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 04:48:55,790 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:55,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash -223517424, now seen corresponding path program 1 times [2024-10-11 04:48:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648358843] [2024-10-11 04:48:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648358843] [2024-10-11 04:48:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648358843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:55,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:55,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:48:55,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138646305] [2024-10-11 04:48:55,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:55,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:55,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:55,888 INFO L87 Difference]: Start difference. First operand 1620 states and 2582 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:55,929 INFO L93 Difference]: Finished difference Result 1769 states and 2821 transitions. [2024-10-11 04:48:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-11 04:48:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:55,936 INFO L225 Difference]: With dead ends: 1769 [2024-10-11 04:48:55,937 INFO L226 Difference]: Without dead ends: 1689 [2024-10-11 04:48:55,937 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 [2024-10-11 04:48:55,938 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:55,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-10-11 04:48:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2024-10-11 04:48:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.5952522255192878) internal successors, (2688), 1686 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2688 transitions. [2024-10-11 04:48:55,971 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2688 transitions. Word has length 53 [2024-10-11 04:48:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:55,971 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2688 transitions. [2024-10-11 04:48:55,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2688 transitions. [2024-10-11 04:48:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 04:48:55,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:55,973 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:55,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 04:48:55,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:55,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash -221372472, now seen corresponding path program 1 times [2024-10-11 04:48:55,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:55,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60155094] [2024-10-11 04:48:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:55,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60155094] [2024-10-11 04:48:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60155094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:56,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:56,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:48:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761169904] [2024-10-11 04:48:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:56,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:48:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:48:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:48:56,269 INFO L87 Difference]: Start difference. First operand 1687 states and 2688 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:56,465 INFO L93 Difference]: Finished difference Result 1836 states and 2924 transitions. [2024-10-11 04:48:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:48:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-11 04:48:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:56,472 INFO L225 Difference]: With dead ends: 1836 [2024-10-11 04:48:56,472 INFO L226 Difference]: Without dead ends: 1689 [2024-10-11 04:48:56,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-11 04:48:56,474 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:56,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:48:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-10-11 04:48:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2024-10-11 04:48:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.59406528189911) internal successors, (2686), 1686 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2686 transitions. [2024-10-11 04:48:56,506 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2686 transitions. Word has length 53 [2024-10-11 04:48:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:56,507 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2686 transitions. [2024-10-11 04:48:56,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2686 transitions. [2024-10-11 04:48:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 04:48:56,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:56,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:56,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 04:48:56,509 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:56,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1598312521, now seen corresponding path program 1 times [2024-10-11 04:48:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258436194] [2024-10-11 04:48:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:56,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258436194] [2024-10-11 04:48:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258436194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:56,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:56,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:48:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839235169] [2024-10-11 04:48:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:48:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:56,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:48:56,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:48:56,720 INFO L87 Difference]: Start difference. First operand 1687 states and 2686 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:56,767 INFO L93 Difference]: Finished difference Result 1693 states and 2693 transitions. [2024-10-11 04:48:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:48:56,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-11 04:48:56,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:56,774 INFO L225 Difference]: With dead ends: 1693 [2024-10-11 04:48:56,775 INFO L226 Difference]: Without dead ends: 1691 [2024-10-11 04:48:56,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:48:56,776 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 0 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:56,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-10-11 04:48:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1691. [2024-10-11 04:48:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1689 states have (on average 1.5920663114268798) internal successors, (2689), 1690 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2689 transitions. [2024-10-11 04:48:56,814 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2689 transitions. Word has length 54 [2024-10-11 04:48:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:56,814 INFO L471 AbstractCegarLoop]: Abstraction has 1691 states and 2689 transitions. [2024-10-11 04:48:56,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2689 transitions. [2024-10-11 04:48:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 04:48:56,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:56,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:56,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 04:48:56,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:56,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:56,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1229565960, now seen corresponding path program 1 times [2024-10-11 04:48:56,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:56,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575074445] [2024-10-11 04:48:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:56,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:56,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:56,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575074445] [2024-10-11 04:48:56,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575074445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:56,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:56,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:48:56,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151326984] [2024-10-11 04:48:56,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:56,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:56,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:56,893 INFO L87 Difference]: Start difference. First operand 1691 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:56,932 INFO L93 Difference]: Finished difference Result 1853 states and 2942 transitions. [2024-10-11 04:48:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:56,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-11 04:48:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:56,939 INFO L225 Difference]: With dead ends: 1853 [2024-10-11 04:48:56,939 INFO L226 Difference]: Without dead ends: 1769 [2024-10-11 04:48:56,940 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 [2024-10-11 04:48:56,941 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:56,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2024-10-11 04:48:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1767. [2024-10-11 04:48:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1765 states have (on average 1.589801699716714) internal successors, (2806), 1766 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2806 transitions. [2024-10-11 04:48:56,983 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2806 transitions. Word has length 55 [2024-10-11 04:48:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:56,984 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 2806 transitions. [2024-10-11 04:48:56,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2806 transitions. [2024-10-11 04:48:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 04:48:56,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:56,985 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:56,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 04:48:56,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:56,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1000926728, now seen corresponding path program 1 times [2024-10-11 04:48:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:56,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201119839] [2024-10-11 04:48:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:57,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201119839] [2024-10-11 04:48:57,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201119839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:57,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:48:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060297500] [2024-10-11 04:48:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:57,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:57,052 INFO L87 Difference]: Start difference. First operand 1767 states and 2806 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:57,098 INFO L93 Difference]: Finished difference Result 2193 states and 3466 transitions. [2024-10-11 04:48:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:57,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-11 04:48:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:57,106 INFO L225 Difference]: With dead ends: 2193 [2024-10-11 04:48:57,107 INFO L226 Difference]: Without dead ends: 1968 [2024-10-11 04:48:57,108 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 [2024-10-11 04:48:57,108 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:57,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2024-10-11 04:48:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1966. [2024-10-11 04:48:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1964 states have (on average 1.5824847250509164) internal successors, (3108), 1965 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3108 transitions. [2024-10-11 04:48:57,164 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3108 transitions. Word has length 55 [2024-10-11 04:48:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:57,164 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 3108 transitions. [2024-10-11 04:48:57,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3108 transitions. [2024-10-11 04:48:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 04:48:57,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:57,166 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:57,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 04:48:57,166 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:57,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 375270664, now seen corresponding path program 1 times [2024-10-11 04:48:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:57,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023257026] [2024-10-11 04:48:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:57,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023257026] [2024-10-11 04:48:57,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023257026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:57,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:48:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199957156] [2024-10-11 04:48:57,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:57,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:57,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:57,253 INFO L87 Difference]: Start difference. First operand 1966 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:57,297 INFO L93 Difference]: Finished difference Result 2766 states and 4330 transitions. [2024-10-11 04:48:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-11 04:48:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:57,306 INFO L225 Difference]: With dead ends: 2766 [2024-10-11 04:48:57,306 INFO L226 Difference]: Without dead ends: 2342 [2024-10-11 04:48:57,307 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 [2024-10-11 04:48:57,308 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:57,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2024-10-11 04:48:57,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2340. [2024-10-11 04:48:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2338 states have (on average 1.5671514114627887) internal successors, (3664), 2339 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3664 transitions. [2024-10-11 04:48:57,361 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3664 transitions. Word has length 55 [2024-10-11 04:48:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:57,362 INFO L471 AbstractCegarLoop]: Abstraction has 2340 states and 3664 transitions. [2024-10-11 04:48:57,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3664 transitions. [2024-10-11 04:48:57,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 04:48:57,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:57,363 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:57,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 04:48:57,363 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:57,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1264004104, now seen corresponding path program 1 times [2024-10-11 04:48:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:57,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380128310] [2024-10-11 04:48:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380128310] [2024-10-11 04:48:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380128310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:57,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:57,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:48:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73275443] [2024-10-11 04:48:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:57,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:57,414 INFO L87 Difference]: Start difference. First operand 2340 states and 3664 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:57,469 INFO L93 Difference]: Finished difference Result 3840 states and 5914 transitions. [2024-10-11 04:48:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-11 04:48:57,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:57,480 INFO L225 Difference]: With dead ends: 3840 [2024-10-11 04:48:57,480 INFO L226 Difference]: Without dead ends: 3042 [2024-10-11 04:48:57,482 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 [2024-10-11 04:48:57,483 INFO L432 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:57,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2024-10-11 04:48:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3040. [2024-10-11 04:48:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3038 states have (on average 1.5404871626069783) internal successors, (4680), 3039 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 4680 transitions. [2024-10-11 04:48:57,557 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 4680 transitions. Word has length 55 [2024-10-11 04:48:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:57,557 INFO L471 AbstractCegarLoop]: Abstraction has 3040 states and 4680 transitions. [2024-10-11 04:48:57,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 4680 transitions. [2024-10-11 04:48:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 04:48:57,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:57,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:48:57,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 04:48:57,559 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:57,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash 960982792, now seen corresponding path program 1 times [2024-10-11 04:48:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147211258] [2024-10-11 04:48:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147211258] [2024-10-11 04:48:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147211258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:48:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522422340] [2024-10-11 04:48:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:57,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:48:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:57,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:48:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:48:57,612 INFO L87 Difference]: Start difference. First operand 3040 states and 4680 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:57,701 INFO L93 Difference]: Finished difference Result 5844 states and 8794 transitions. [2024-10-11 04:48:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:48:57,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-11 04:48:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:57,725 INFO L225 Difference]: With dead ends: 5844 [2024-10-11 04:48:57,726 INFO L226 Difference]: Without dead ends: 4346 [2024-10-11 04:48:57,733 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 [2024-10-11 04:48:57,734 INFO L432 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:57,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:48:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2024-10-11 04:48:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 4344. [2024-10-11 04:48:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.501612160294795) internal successors, (6520), 4343 states have internal predecessors, (6520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6520 transitions. [2024-10-11 04:48:57,855 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6520 transitions. Word has length 55 [2024-10-11 04:48:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:57,856 INFO L471 AbstractCegarLoop]: Abstraction has 4344 states and 6520 transitions. [2024-10-11 04:48:57,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6520 transitions. [2024-10-11 04:48:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:48:57,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:57,859 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:48:57,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 04:48:57,859 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:57,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1241399441, now seen corresponding path program 1 times [2024-10-11 04:48:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087359178] [2024-10-11 04:48:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:48:58,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:58,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087359178] [2024-10-11 04:48:58,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087359178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:58,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:58,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:48:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979689367] [2024-10-11 04:48:58,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:58,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:48:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:48:58,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:48:58,038 INFO L87 Difference]: Start difference. First operand 4344 states and 6520 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:58,584 INFO L93 Difference]: Finished difference Result 18132 states and 26510 transitions. [2024-10-11 04:48:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:48:58,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 04:48:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:58,620 INFO L225 Difference]: With dead ends: 18132 [2024-10-11 04:48:58,620 INFO L226 Difference]: Without dead ends: 16146 [2024-10-11 04:48:58,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:48:58,630 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 6291 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:58,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6291 Valid, 3561 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:48:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2024-10-11 04:48:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2024-10-11 04:48:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.4773064372589737) internal successors, (9960), 6743 states have internal predecessors, (9960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 9960 transitions. [2024-10-11 04:48:58,983 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 9960 transitions. Word has length 73 [2024-10-11 04:48:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:48:58,983 INFO L471 AbstractCegarLoop]: Abstraction has 6744 states and 9960 transitions. [2024-10-11 04:48:58,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 9960 transitions. [2024-10-11 04:48:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:48:58,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:48:58,986 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:48:58,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 04:48:58,987 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:48:58,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:48:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1012760209, now seen corresponding path program 1 times [2024-10-11 04:48:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:48:58,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058359703] [2024-10-11 04:48:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:48:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 04:48:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:59,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058359703] [2024-10-11 04:48:59,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058359703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:48:59,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:48:59,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:48:59,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843443098] [2024-10-11 04:48:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:48:59,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:48:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:48:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:48:59,156 INFO L87 Difference]: Start difference. First operand 6744 states and 9960 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:48:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:48:59,640 INFO L93 Difference]: Finished difference Result 20932 states and 30542 transitions. [2024-10-11 04:48:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:48:59,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 04:48:59,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:48:59,796 INFO L225 Difference]: With dead ends: 20932 [2024-10-11 04:48:59,796 INFO L226 Difference]: Without dead ends: 18130 [2024-10-11 04:48:59,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:48:59,805 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 6336 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:48:59,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:48:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2024-10-11 04:49:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2024-10-11 04:49:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.4604138978545662) internal successors, (15384), 10535 states have internal predecessors, (15384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15384 transitions. [2024-10-11 04:49:00,189 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15384 transitions. Word has length 73 [2024-10-11 04:49:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:00,189 INFO L471 AbstractCegarLoop]: Abstraction has 10536 states and 15384 transitions. [2024-10-11 04:49:00,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15384 transitions. [2024-10-11 04:49:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:49:00,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:00,192 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:49:00,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 04:49:00,193 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:00,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash 387104145, now seen corresponding path program 1 times [2024-10-11 04:49:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084512538] [2024-10-11 04:49:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 04:49:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084512538] [2024-10-11 04:49:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084512538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:00,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:00,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:49:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496153869] [2024-10-11 04:49:00,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:00,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:49:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:49:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:49:00,338 INFO L87 Difference]: Start difference. First operand 10536 states and 15384 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:00,920 INFO L93 Difference]: Finished difference Result 23732 states and 34558 transitions. [2024-10-11 04:49:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:49:00,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 04:49:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:00,962 INFO L225 Difference]: With dead ends: 23732 [2024-10-11 04:49:00,962 INFO L226 Difference]: Without dead ends: 20930 [2024-10-11 04:49:00,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:49:00,971 INFO L432 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:00,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:49:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2024-10-11 04:49:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2024-10-11 04:49:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4549272536373181) internal successors, (19400), 13335 states have internal predecessors, (19400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19400 transitions. [2024-10-11 04:49:01,441 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19400 transitions. Word has length 73 [2024-10-11 04:49:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:01,441 INFO L471 AbstractCegarLoop]: Abstraction has 13336 states and 19400 transitions. [2024-10-11 04:49:01,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:01,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19400 transitions. [2024-10-11 04:49:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:49:01,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:01,444 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:49:01,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 04:49:01,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:01,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:01,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1275837585, now seen corresponding path program 1 times [2024-10-11 04:49:01,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972063761] [2024-10-11 04:49:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:01,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 04:49:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972063761] [2024-10-11 04:49:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972063761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:49:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753916054] [2024-10-11 04:49:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:01,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:49:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:49:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:49:01,601 INFO L87 Difference]: Start difference. First operand 13336 states and 19400 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:02,226 INFO L93 Difference]: Finished difference Result 26532 states and 38574 transitions. [2024-10-11 04:49:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:49:02,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 04:49:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:02,278 INFO L225 Difference]: With dead ends: 26532 [2024-10-11 04:49:02,279 INFO L226 Difference]: Without dead ends: 23730 [2024-10-11 04:49:02,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:49:02,290 INFO L432 NwaCegarLoop]: 1594 mSDtfsCounter, 6339 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:02,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 3590 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:49:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2024-10-11 04:49:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2024-10-11 04:49:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4513449857443907) internal successors, (23416), 16135 states have internal predecessors, (23416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23416 transitions. [2024-10-11 04:49:02,792 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23416 transitions. Word has length 73 [2024-10-11 04:49:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:02,792 INFO L471 AbstractCegarLoop]: Abstraction has 16136 states and 23416 transitions. [2024-10-11 04:49:02,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23416 transitions. [2024-10-11 04:49:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 04:49:02,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:02,796 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:49:02,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 04:49:02,796 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:02,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 972816273, now seen corresponding path program 1 times [2024-10-11 04:49:02,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:02,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154859412] [2024-10-11 04:49:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:02,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 04:49:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154859412] [2024-10-11 04:49:02,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154859412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:02,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:02,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 04:49:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32770315] [2024-10-11 04:49:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:02,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 04:49:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 04:49:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 04:49:02,955 INFO L87 Difference]: Start difference. First operand 16136 states and 23416 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:03,861 INFO L93 Difference]: Finished difference Result 29332 states and 42590 transitions. [2024-10-11 04:49:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 04:49:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 04:49:03,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:03,911 INFO L225 Difference]: With dead ends: 29332 [2024-10-11 04:49:03,912 INFO L226 Difference]: Without dead ends: 26530 [2024-10-11 04:49:03,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:49:03,927 INFO L432 NwaCegarLoop]: 1593 mSDtfsCounter, 6293 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:03,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3665 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:49:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2024-10-11 04:49:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2024-10-11 04:49:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4488222245695574) internal successors, (27432), 18935 states have internal predecessors, (27432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27432 transitions. [2024-10-11 04:49:04,635 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27432 transitions. Word has length 73 [2024-10-11 04:49:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:04,636 INFO L471 AbstractCegarLoop]: Abstraction has 18936 states and 27432 transitions. [2024-10-11 04:49:04,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27432 transitions. [2024-10-11 04:49:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 04:49:04,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:04,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:04,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 04:49:04,639 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash 992660111, now seen corresponding path program 1 times [2024-10-11 04:49:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775755362] [2024-10-11 04:49:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:04,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775755362] [2024-10-11 04:49:04,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775755362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:04,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:04,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:49:04,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989692931] [2024-10-11 04:49:04,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:04,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:49:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:49:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:49:04,735 INFO L87 Difference]: Start difference. First operand 18936 states and 27432 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:05,127 INFO L93 Difference]: Finished difference Result 36332 states and 52410 transitions. [2024-10-11 04:49:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:49:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-11 04:49:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:05,169 INFO L225 Difference]: With dead ends: 36332 [2024-10-11 04:49:05,169 INFO L226 Difference]: Without dead ends: 18938 [2024-10-11 04:49:05,188 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 [2024-10-11 04:49:05,189 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:05,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:49:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2024-10-11 04:49:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2024-10-11 04:49:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.433188972219288) internal successors, (27136), 18935 states have internal predecessors, (27136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27136 transitions. [2024-10-11 04:49:05,634 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27136 transitions. Word has length 74 [2024-10-11 04:49:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:05,634 INFO L471 AbstractCegarLoop]: Abstraction has 18936 states and 27136 transitions. [2024-10-11 04:49:05,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:05,634 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27136 transitions. [2024-10-11 04:49:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 04:49:05,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:05,637 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:49:05,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 04:49:05,637 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1570037031, now seen corresponding path program 1 times [2024-10-11 04:49:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165614152] [2024-10-11 04:49:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165614152] [2024-10-11 04:49:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165614152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:49:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065747363] [2024-10-11 04:49:05,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:05,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:49:05,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:49:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:49:05,746 INFO L87 Difference]: Start difference. First operand 18936 states and 27136 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:05,933 INFO L93 Difference]: Finished difference Result 25406 states and 36413 transitions. [2024-10-11 04:49:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:49:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-11 04:49:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:05,947 INFO L225 Difference]: With dead ends: 25406 [2024-10-11 04:49:05,947 INFO L226 Difference]: Without dead ends: 8012 [2024-10-11 04:49:05,969 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 [2024-10-11 04:49:05,970 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:05,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:49:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2024-10-11 04:49:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2024-10-11 04:49:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.4520804698238161) internal successors, (11621), 8004 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 11621 transitions. [2024-10-11 04:49:06,266 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 11621 transitions. Word has length 75 [2024-10-11 04:49:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:06,267 INFO L471 AbstractCegarLoop]: Abstraction has 8005 states and 11621 transitions. [2024-10-11 04:49:06,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 11621 transitions. [2024-10-11 04:49:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 04:49:06,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:06,270 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:49:06,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 04:49:06,271 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:06,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 681687453, now seen corresponding path program 1 times [2024-10-11 04:49:06,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:06,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087662882] [2024-10-11 04:49:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:06,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087662882] [2024-10-11 04:49:06,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087662882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:06,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:06,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:49:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481256603] [2024-10-11 04:49:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:06,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:49:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:49:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:49:06,367 INFO L87 Difference]: Start difference. First operand 8005 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:06,464 INFO L93 Difference]: Finished difference Result 11233 states and 16199 transitions. [2024-10-11 04:49:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:49:06,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-11 04:49:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:06,472 INFO L225 Difference]: With dead ends: 11233 [2024-10-11 04:49:06,472 INFO L226 Difference]: Without dead ends: 4783 [2024-10-11 04:49:06,479 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 [2024-10-11 04:49:06,480 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:06,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:49:06,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2024-10-11 04:49:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2024-10-11 04:49:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.463276836158192) internal successors, (6993), 4780 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 6993 transitions. [2024-10-11 04:49:06,586 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 6993 transitions. Word has length 76 [2024-10-11 04:49:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:06,587 INFO L471 AbstractCegarLoop]: Abstraction has 4781 states and 6993 transitions. [2024-10-11 04:49:06,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 6993 transitions. [2024-10-11 04:49:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 04:49:06,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:06,588 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:06,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 04:49:06,588 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:06,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1046035925, now seen corresponding path program 1 times [2024-10-11 04:49:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:06,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643269499] [2024-10-11 04:49:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:06,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:06,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643269499] [2024-10-11 04:49:06,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643269499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:06,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:06,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:49:06,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878388475] [2024-10-11 04:49:06,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:06,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:49:06,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:49:06,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:49:06,684 INFO L87 Difference]: Start difference. First operand 4781 states and 6993 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:06,747 INFO L93 Difference]: Finished difference Result 6397 states and 9257 transitions. [2024-10-11 04:49:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:49:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-11 04:49:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:06,752 INFO L225 Difference]: With dead ends: 6397 [2024-10-11 04:49:06,753 INFO L226 Difference]: Without dead ends: 3171 [2024-10-11 04:49:06,758 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 [2024-10-11 04:49:06,759 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:06,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:49:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2024-10-11 04:49:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2024-10-11 04:49:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.4856330912535523) internal successors, (4705), 3168 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 4705 transitions. [2024-10-11 04:49:06,821 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 4705 transitions. Word has length 78 [2024-10-11 04:49:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:06,822 INFO L471 AbstractCegarLoop]: Abstraction has 3169 states and 4705 transitions. [2024-10-11 04:49:06,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 4705 transitions. [2024-10-11 04:49:06,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 04:49:06,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:06,823 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:06,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 04:49:06,824 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:06,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1010746425, now seen corresponding path program 1 times [2024-10-11 04:49:06,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808395511] [2024-10-11 04:49:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808395511] [2024-10-11 04:49:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808395511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:49:06,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:49:06,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:49:06,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418025969] [2024-10-11 04:49:06,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:49:06,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:49:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:06,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:49:06,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:49:06,917 INFO L87 Difference]: Start difference. First operand 3169 states and 4705 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:06,961 INFO L93 Difference]: Finished difference Result 3979 states and 5825 transitions. [2024-10-11 04:49:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:49:06,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-11 04:49:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:06,965 INFO L225 Difference]: With dead ends: 3979 [2024-10-11 04:49:06,966 INFO L226 Difference]: Without dead ends: 2365 [2024-10-11 04:49:06,967 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 [2024-10-11 04:49:06,969 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:06,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:49:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-10-11 04:49:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2024-10-11 04:49:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.513765353663702) internal successors, (3574), 2362 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3574 transitions. [2024-10-11 04:49:07,009 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3574 transitions. Word has length 80 [2024-10-11 04:49:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:07,010 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 3574 transitions. [2024-10-11 04:49:07,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3574 transitions. [2024-10-11 04:49:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-11 04:49:07,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:07,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:07,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 04:49:07,012 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:07,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash -385441849, now seen corresponding path program 1 times [2024-10-11 04:49:07,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:07,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710687020] [2024-10-11 04:49:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:07,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:08,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710687020] [2024-10-11 04:49:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710687020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856563541] [2024-10-11 04:49:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:08,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:08,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:08,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 04:49:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:08,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 04:49:08,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:49:08,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:49:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856563541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:09,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-11 04:49:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454158244] [2024-10-11 04:49:09,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:09,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 04:49:09,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 04:49:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-11 04:49:09,337 INFO L87 Difference]: Start difference. First operand 2363 states and 3574 transitions. Second operand has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:12,440 INFO L93 Difference]: Finished difference Result 6332 states and 8852 transitions. [2024-10-11 04:49:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 04:49:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 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 82 [2024-10-11 04:49:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:12,449 INFO L225 Difference]: With dead ends: 6332 [2024-10-11 04:49:12,449 INFO L226 Difference]: Without dead ends: 5524 [2024-10-11 04:49:12,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=717, Invalid=2705, Unknown=0, NotChecked=0, Total=3422 [2024-10-11 04:49:12,453 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 19006 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19006 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:12,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19006 Valid, 4922 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 04:49:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2024-10-11 04:49:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5318. [2024-10-11 04:49:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5316 states have (on average 1.3856282919488336) internal successors, (7366), 5317 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:12,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 7366 transitions. [2024-10-11 04:49:12,656 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 7366 transitions. Word has length 82 [2024-10-11 04:49:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:12,656 INFO L471 AbstractCegarLoop]: Abstraction has 5318 states and 7366 transitions. [2024-10-11 04:49:12,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 7366 transitions. [2024-10-11 04:49:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-11 04:49:12,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:12,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:12,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 04:49:12,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 04:49:12,859 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:12,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1282519057, now seen corresponding path program 1 times [2024-10-11 04:49:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315472205] [2024-10-11 04:49:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315472205] [2024-10-11 04:49:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315472205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938854082] [2024-10-11 04:49:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:13,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:13,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:13,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 04:49:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:13,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 04:49:13,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:14,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:16,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938854082] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:16,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:16,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 34 [2024-10-11 04:49:16,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049928798] [2024-10-11 04:49:16,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:16,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 04:49:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 04:49:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 04:49:16,649 INFO L87 Difference]: Start difference. First operand 5318 states and 7366 transitions. Second operand has 34 states, 34 states have (on average 6.264705882352941) internal successors, (213), 34 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:19,022 INFO L93 Difference]: Finished difference Result 15798 states and 21123 transitions. [2024-10-11 04:49:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 04:49:19,023 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.264705882352941) internal successors, (213), 34 states have internal predecessors, (213), 0 states have call successors, (0), 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 [2024-10-11 04:49:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:19,035 INFO L225 Difference]: With dead ends: 15798 [2024-10-11 04:49:19,035 INFO L226 Difference]: Without dead ends: 12301 [2024-10-11 04:49:19,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=968, Invalid=3192, Unknown=0, NotChecked=0, Total=4160 [2024-10-11 04:49:19,039 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 19016 mSDsluCounter, 6616 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19016 SdHoareTripleChecker+Valid, 8145 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:19,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19016 Valid, 8145 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 04:49:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2024-10-11 04:49:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 11999. [2024-10-11 04:49:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11999 states, 11997 states have (on average 1.3316662498958072) internal successors, (15976), 11998 states have internal predecessors, (15976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11999 states to 11999 states and 15976 transitions. [2024-10-11 04:49:19,373 INFO L78 Accepts]: Start accepts. Automaton has 11999 states and 15976 transitions. Word has length 83 [2024-10-11 04:49:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:19,373 INFO L471 AbstractCegarLoop]: Abstraction has 11999 states and 15976 transitions. [2024-10-11 04:49:19,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.264705882352941) internal successors, (213), 34 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11999 states and 15976 transitions. [2024-10-11 04:49:19,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-11 04:49:19,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:19,375 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:19,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 04:49:19,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:19,576 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:19,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -484723217, now seen corresponding path program 1 times [2024-10-11 04:49:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730462946] [2024-10-11 04:49:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:19,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:19,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730462946] [2024-10-11 04:49:19,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730462946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:19,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016412025] [2024-10-11 04:49:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:19,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:19,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:19,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:19,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 04:49:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:20,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:49:20,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:20,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016412025] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:21,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:21,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-11 04:49:21,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101658622] [2024-10-11 04:49:21,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:21,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 04:49:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 04:49:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-11 04:49:21,029 INFO L87 Difference]: Start difference. First operand 11999 states and 15976 transitions. Second operand has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 20 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:21,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:21,827 INFO L93 Difference]: Finished difference Result 30366 states and 39771 transitions. [2024-10-11 04:49:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 04:49:21,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 20 states have internal predecessors, (175), 0 states have call successors, (0), 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 [2024-10-11 04:49:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:21,851 INFO L225 Difference]: With dead ends: 30366 [2024-10-11 04:49:21,851 INFO L226 Difference]: Without dead ends: 20975 [2024-10-11 04:49:21,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-10-11 04:49:21,863 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 13669 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13669 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:21,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13669 Valid, 4753 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:49:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20975 states. [2024-10-11 04:49:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20975 to 20971. [2024-10-11 04:49:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20971 states, 20969 states have (on average 1.3096952644379798) internal successors, (27463), 20970 states have internal predecessors, (27463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20971 states to 20971 states and 27463 transitions. [2024-10-11 04:49:22,563 INFO L78 Accepts]: Start accepts. Automaton has 20971 states and 27463 transitions. Word has length 83 [2024-10-11 04:49:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:22,563 INFO L471 AbstractCegarLoop]: Abstraction has 20971 states and 27463 transitions. [2024-10-11 04:49:22,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.333333333333334) internal successors, (175), 20 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 20971 states and 27463 transitions. [2024-10-11 04:49:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-11 04:49:22,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:22,565 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:22,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 04:49:22,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:22,766 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:22,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash 584444143, now seen corresponding path program 1 times [2024-10-11 04:49:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399106879] [2024-10-11 04:49:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:23,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:23,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399106879] [2024-10-11 04:49:23,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399106879] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:23,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588346139] [2024-10-11 04:49:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:23,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:23,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:23,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:23,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 04:49:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:23,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 04:49:23,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:23,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588346139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:24,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 29 [2024-10-11 04:49:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293314489] [2024-10-11 04:49:24,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:24,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 04:49:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 04:49:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2024-10-11 04:49:24,530 INFO L87 Difference]: Start difference. First operand 20971 states and 27463 transitions. Second operand has 29 states, 29 states have (on average 7.0344827586206895) internal successors, (204), 29 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:25,801 INFO L93 Difference]: Finished difference Result 38121 states and 49654 transitions. [2024-10-11 04:49:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 04:49:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.0344827586206895) internal successors, (204), 29 states have internal predecessors, (204), 0 states have call successors, (0), 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 [2024-10-11 04:49:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:25,827 INFO L225 Difference]: With dead ends: 38121 [2024-10-11 04:49:25,828 INFO L226 Difference]: Without dead ends: 21683 [2024-10-11 04:49:25,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=421, Invalid=1385, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 04:49:25,838 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 11996 mSDsluCounter, 8048 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11996 SdHoareTripleChecker+Valid, 9577 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:25,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11996 Valid, 9577 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 04:49:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21683 states. [2024-10-11 04:49:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21683 to 21295. [2024-10-11 04:49:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21295 states, 21293 states have (on average 1.298924529187996) internal successors, (27658), 21294 states have internal predecessors, (27658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21295 states to 21295 states and 27658 transitions. [2024-10-11 04:49:26,443 INFO L78 Accepts]: Start accepts. Automaton has 21295 states and 27658 transitions. Word has length 83 [2024-10-11 04:49:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:26,444 INFO L471 AbstractCegarLoop]: Abstraction has 21295 states and 27658 transitions. [2024-10-11 04:49:26,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.0344827586206895) internal successors, (204), 29 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21295 states and 27658 transitions. [2024-10-11 04:49:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 04:49:26,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:26,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:26,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 04:49:26,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 04:49:26,647 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:26,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1856588261, now seen corresponding path program 1 times [2024-10-11 04:49:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:26,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213855896] [2024-10-11 04:49:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:27,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213855896] [2024-10-11 04:49:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213855896] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186683814] [2024-10-11 04:49:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:27,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:27,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:27,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:27,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 04:49:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:27,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:49:27,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:27,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:28,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186683814] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:28,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:28,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-11 04:49:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754749766] [2024-10-11 04:49:28,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:28,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 04:49:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 04:49:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-10-11 04:49:28,226 INFO L87 Difference]: Start difference. First operand 21295 states and 27658 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 20 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:29,757 INFO L93 Difference]: Finished difference Result 60205 states and 77680 transitions. [2024-10-11 04:49:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 04:49:29,758 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 20 states have internal predecessors, (193), 0 states have call successors, (0), 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 84 [2024-10-11 04:49:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:29,809 INFO L225 Difference]: With dead ends: 60205 [2024-10-11 04:49:29,809 INFO L226 Difference]: Without dead ends: 41690 [2024-10-11 04:49:29,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2024-10-11 04:49:29,827 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 15107 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15107 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:29,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15107 Valid, 4751 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 04:49:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41690 states. [2024-10-11 04:49:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41690 to 41126. [2024-10-11 04:49:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41126 states, 41124 states have (on average 1.2729306487695748) internal successors, (52348), 41125 states have internal predecessors, (52348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41126 states to 41126 states and 52348 transitions. [2024-10-11 04:49:31,239 INFO L78 Accepts]: Start accepts. Automaton has 41126 states and 52348 transitions. Word has length 84 [2024-10-11 04:49:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:31,239 INFO L471 AbstractCegarLoop]: Abstraction has 41126 states and 52348 transitions. [2024-10-11 04:49:31,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 20 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 41126 states and 52348 transitions. [2024-10-11 04:49:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-11 04:49:31,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:31,241 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:31,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 04:49:31,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 04:49:31,442 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:31,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:31,443 INFO L85 PathProgramCache]: Analyzing trace with hash 973270591, now seen corresponding path program 1 times [2024-10-11 04:49:31,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:31,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193447879] [2024-10-11 04:49:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:31,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193447879] [2024-10-11 04:49:31,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193447879] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:31,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353443555] [2024-10-11 04:49:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:31,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:31,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:31,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 04:49:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:31,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 04:49:31,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:32,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353443555] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:33,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:33,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 29 [2024-10-11 04:49:33,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008343036] [2024-10-11 04:49:33,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:33,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 04:49:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 04:49:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2024-10-11 04:49:33,450 INFO L87 Difference]: Start difference. First operand 41126 states and 52348 transitions. Second operand has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:49:36,305 INFO L93 Difference]: Finished difference Result 114190 states and 145025 transitions. [2024-10-11 04:49:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 04:49:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 0 states have call successors, (0), 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 [2024-10-11 04:49:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:49:36,403 INFO L225 Difference]: With dead ends: 114190 [2024-10-11 04:49:36,404 INFO L226 Difference]: Without dead ends: 81429 [2024-10-11 04:49:36,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 04:49:36,428 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 19344 mSDsluCounter, 6458 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19344 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 04:49:36,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19344 Valid, 7972 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 04:49:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81429 states. [2024-10-11 04:49:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81429 to 80305. [2024-10-11 04:49:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80305 states, 80303 states have (on average 1.2513231137068355) internal successors, (100485), 80304 states have internal predecessors, (100485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80305 states to 80305 states and 100485 transitions. [2024-10-11 04:49:39,829 INFO L78 Accepts]: Start accepts. Automaton has 80305 states and 100485 transitions. Word has length 85 [2024-10-11 04:49:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:49:39,830 INFO L471 AbstractCegarLoop]: Abstraction has 80305 states and 100485 transitions. [2024-10-11 04:49:39,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:49:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 80305 states and 100485 transitions. [2024-10-11 04:49:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-11 04:49:39,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:49:39,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:49:39,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 04:49:40,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 04:49:40,033 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:49:40,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:49:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash 520308313, now seen corresponding path program 1 times [2024-10-11 04:49:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:49:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7147485] [2024-10-11 04:49:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:40,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:49:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:41,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:49:41,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7147485] [2024-10-11 04:49:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7147485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:49:41,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665805857] [2024-10-11 04:49:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:49:41,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:49:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:49:41,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:49:41,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 04:49:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:49:41,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-11 04:49:41,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:49:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:44,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:49:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:49:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665805857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:49:49,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:49:49,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 25, 23] total 57 [2024-10-11 04:49:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362508135] [2024-10-11 04:49:49,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:49:49,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-11 04:49:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:49:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-11 04:49:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2787, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 04:49:49,224 INFO L87 Difference]: Start difference. First operand 80305 states and 100485 transitions. Second operand has 57 states, 57 states have (on average 4.105263157894737) internal successors, (234), 57 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)