./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.6.ufo.BOUNDED-12.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1f94066d185a25351cbcea30e35499f745a051fde3e7dea5a9b71a49a6a37f3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:51:29,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:51:29,981 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:51:29,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:51:29,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:51:30,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:51:30,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:51:30,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:51:30,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:51:30,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:51:30,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:51:30,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:51:30,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:51:30,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:51:30,009 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:51:30,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:51:30,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:51:30,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:51:30,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:51:30,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:51:30,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:51:30,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:51:30,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:51:30,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:51:30,012 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:51:30,012 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:51:30,013 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:51:30,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:51:30,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:51:30,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:51:30,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:51:30,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:51:30,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:51:30,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:51:30,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:51:30,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:51:30,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:51:30,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:51:30,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:51:30,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:51:30,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:51:30,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:51:30,017 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1f94066d185a25351cbcea30e35499f745a051fde3e7dea5a9b71a49a6a37f3 [2024-10-24 02:51:30,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:51:30,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:51:30,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:51:30,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:51:30,227 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:51:30,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c [2024-10-24 02:51:31,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:51:31,854 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:51:31,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c [2024-10-24 02:51:31,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2960782/891de18dcc224603a62c902dce224f71/FLAGe756f9d33 [2024-10-24 02:51:32,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2960782/891de18dcc224603a62c902dce224f71 [2024-10-24 02:51:32,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:51:32,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:51:32,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:51:32,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:51:32,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:51:32,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:32" (1/1) ... [2024-10-24 02:51:32,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d078440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:32, skipping insertion in model container [2024-10-24 02:51:32,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:32" (1/1) ... [2024-10-24 02:51:32,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:51:32,520 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[15482,15495] [2024-10-24 02:51:32,579 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[22543,22556] [2024-10-24 02:51:33,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:51:33,117 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:51:33,150 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[15482,15495] [2024-10-24 02:51:33,212 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.6.ufo.BOUNDED-12.pals+Problem12_label04.c[22543,22556] [2024-10-24 02:51:33,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:51:33,681 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:51:33,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33 WrapperNode [2024-10-24 02:51:33,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:51:33,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:51:33,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:51:33,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:51:33,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:33,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,030 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5159 [2024-10-24 02:51:34,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:51:34,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:51:34,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:51:34,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:51:34,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,235 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 02:51:34,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:51:34,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:51:34,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:51:34,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:51:34,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (1/1) ... [2024-10-24 02:51:34,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:51:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:51:34,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 02:51:34,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 02:51:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:51:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:51:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:51:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:51:34,576 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:51:34,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:51:37,816 INFO L? ?]: Removed 749 outVars from TransFormulas that were not future-live. [2024-10-24 02:51:37,817 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:51:37,875 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:51:37,878 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:51:37,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:37 BoogieIcfgContainer [2024-10-24 02:51:37,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:51:37,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:51:37,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:51:37,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:51:37,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:51:32" (1/3) ... [2024-10-24 02:51:37,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15921369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:37, skipping insertion in model container [2024-10-24 02:51:37,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:33" (2/3) ... [2024-10-24 02:51:37,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15921369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:37, skipping insertion in model container [2024-10-24 02:51:37,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:37" (3/3) ... [2024-10-24 02:51:37,885 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label04.c [2024-10-24 02:51:37,898 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:51:37,898 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:51:37,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:51:37,958 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;@72e490b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:51:37,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:51:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 02:51:37,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:37,972 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] [2024-10-24 02:51:37,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:37,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2024-10-24 02:51:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606857756] [2024-10-24 02:51:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606857756] [2024-10-24 02:51:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606857756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:38,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:38,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:51:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634390176] [2024-10-24 02:51:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:38,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:51:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:51:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:51:38,255 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:38,332 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2024-10-24 02:51:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:51:38,334 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-10-24 02:51:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:38,356 INFO L225 Difference]: With dead ends: 1654 [2024-10-24 02:51:38,360 INFO L226 Difference]: Without dead ends: 845 [2024-10-24 02:51:38,365 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 [2024-10-24 02:51:38,370 INFO L432 NwaCegarLoop]: 1599 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, 1599 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 [2024-10-24 02:51:38,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-10-24 02:51:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-10-24 02:51:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2024-10-24 02:51:38,462 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2024-10-24 02:51:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:38,462 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2024-10-24 02:51:38,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2024-10-24 02:51:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 02:51:38,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:38,463 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] [2024-10-24 02:51:38,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:51:38,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:38,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2024-10-24 02:51:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:38,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735027286] [2024-10-24 02:51:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735027286] [2024-10-24 02:51:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735027286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:38,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:38,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:51:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888728847] [2024-10-24 02:51:38,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:38,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:51:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:51:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:51:38,649 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:38,740 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2024-10-24 02:51:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:51:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-10-24 02:51:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:38,751 INFO L225 Difference]: With dead ends: 895 [2024-10-24 02:51:38,751 INFO L226 Difference]: Without dead ends: 845 [2024-10-24 02:51:38,752 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 [2024-10-24 02:51:38,753 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:38,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-10-24 02:51:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-10-24 02:51:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2024-10-24 02:51:38,776 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2024-10-24 02:51:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:38,776 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2024-10-24 02:51:38,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2024-10-24 02:51:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:51:38,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:38,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:38,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:51:38,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:38,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:38,783 INFO L85 PathProgramCache]: Analyzing trace with hash 902394301, now seen corresponding path program 1 times [2024-10-24 02:51:38,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130453144] [2024-10-24 02:51:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:38,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:38,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130453144] [2024-10-24 02:51:38,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130453144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:38,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:38,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:51:38,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150849725] [2024-10-24 02:51:38,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:38,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:38,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:38,926 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:41,762 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2024-10-24 02:51:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:41,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 02:51:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:41,767 INFO L225 Difference]: With dead ends: 2349 [2024-10-24 02:51:41,767 INFO L226 Difference]: Without dead ends: 1596 [2024-10-24 02:51:41,768 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 [2024-10-24 02:51:41,769 INFO L432 NwaCegarLoop]: 585 mSDtfsCounter, 861 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:41,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 592 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-24 02:51:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2024-10-24 02:51:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2024-10-24 02:51:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.5922208281053953) internal successors, (2538), 1595 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2538 transitions. [2024-10-24 02:51:41,793 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2538 transitions. Word has length 60 [2024-10-24 02:51:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:41,794 INFO L471 AbstractCegarLoop]: Abstraction has 1596 states and 2538 transitions. [2024-10-24 02:51:41,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2538 transitions. [2024-10-24 02:51:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 02:51:41,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:41,796 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:41,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:51:41,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:41,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2024-10-24 02:51:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099549376] [2024-10-24 02:51:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:41,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:41,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:41,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099549376] [2024-10-24 02:51:41,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099549376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:41,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712595981] [2024-10-24 02:51:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:41,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:41,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:41,932 INFO L87 Difference]: Start difference. First operand 1596 states and 2538 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:42,178 INFO L93 Difference]: Finished difference Result 2160 states and 3450 transitions. [2024-10-24 02:51:42,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:51:42,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 02:51:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:42,239 INFO L225 Difference]: With dead ends: 2160 [2024-10-24 02:51:42,239 INFO L226 Difference]: Without dead ends: 2113 [2024-10-24 02:51:42,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:51:42,241 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:42,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2024-10-24 02:51:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2024-10-24 02:51:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.5930445393532642) internal successors, (2611), 1640 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2611 transitions. [2024-10-24 02:51:42,279 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2611 transitions. Word has length 62 [2024-10-24 02:51:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:42,280 INFO L471 AbstractCegarLoop]: Abstraction has 1641 states and 2611 transitions. [2024-10-24 02:51:42,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2611 transitions. [2024-10-24 02:51:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 02:51:42,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:42,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:42,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:51:42,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:42,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2024-10-24 02:51:42,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:42,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587103219] [2024-10-24 02:51:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:42,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:42,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587103219] [2024-10-24 02:51:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587103219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:42,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056260151] [2024-10-24 02:51:42,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:42,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:42,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:42,389 INFO L87 Difference]: Start difference. First operand 1641 states and 2611 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2024-10-24 02:51:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:42,441 INFO L93 Difference]: Finished difference Result 1814 states and 2890 transitions. [2024-10-24 02:51:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 64 [2024-10-24 02:51:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:42,447 INFO L225 Difference]: With dead ends: 1814 [2024-10-24 02:51:42,447 INFO L226 Difference]: Without dead ends: 1722 [2024-10-24 02:51:42,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:42,449 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 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 [2024-10-24 02:51:42,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-10-24 02:51:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2024-10-24 02:51:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5931315483119908) internal successors, (2737), 1719 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2737 transitions. [2024-10-24 02:51:42,489 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2737 transitions. Word has length 64 [2024-10-24 02:51:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:42,490 INFO L471 AbstractCegarLoop]: Abstraction has 1720 states and 2737 transitions. [2024-10-24 02:51:42,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2024-10-24 02:51:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2737 transitions. [2024-10-24 02:51:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 02:51:42,492 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:42,492 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:42,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:51:42,493 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:42,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2024-10-24 02:51:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:42,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394581385] [2024-10-24 02:51:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:42,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:42,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394581385] [2024-10-24 02:51:42,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394581385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:42,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333377458] [2024-10-24 02:51:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:42,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:42,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:42,877 INFO L87 Difference]: Start difference. First operand 1720 states and 2737 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2024-10-24 02:51:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:43,099 INFO L93 Difference]: Finished difference Result 1893 states and 3013 transitions. [2024-10-24 02:51:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:43,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 64 [2024-10-24 02:51:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:43,105 INFO L225 Difference]: With dead ends: 1893 [2024-10-24 02:51:43,105 INFO L226 Difference]: Without dead ends: 1722 [2024-10-24 02:51:43,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-24 02:51:43,107 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 7490 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7490 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:43,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7490 Valid, 1906 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-10-24 02:51:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2024-10-24 02:51:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5919674039580909) internal successors, (2735), 1719 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2735 transitions. [2024-10-24 02:51:43,141 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2735 transitions. Word has length 64 [2024-10-24 02:51:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:43,142 INFO L471 AbstractCegarLoop]: Abstraction has 1720 states and 2735 transitions. [2024-10-24 02:51:43,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2024-10-24 02:51:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2735 transitions. [2024-10-24 02:51:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 02:51:43,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:43,143 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:43,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:51:43,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:43,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2024-10-24 02:51:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075277506] [2024-10-24 02:51:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:43,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075277506] [2024-10-24 02:51:43,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075277506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:43,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:51:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918052558] [2024-10-24 02:51:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:43,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:51:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:51:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:51:43,261 INFO L87 Difference]: Start difference. First operand 1720 states and 2735 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:43,290 INFO L93 Difference]: Finished difference Result 1726 states and 2742 transitions. [2024-10-24 02:51:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:51:43,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 02:51:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:43,295 INFO L225 Difference]: With dead ends: 1726 [2024-10-24 02:51:43,295 INFO L226 Difference]: Without dead ends: 1724 [2024-10-24 02:51:43,295 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 [2024-10-24 02:51:43,296 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 0 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4657 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 [2024-10-24 02:51:43,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2024-10-24 02:51:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2024-10-24 02:51:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.5900116144018583) internal successors, (2738), 1723 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2738 transitions. [2024-10-24 02:51:43,322 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2738 transitions. Word has length 65 [2024-10-24 02:51:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:43,322 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2738 transitions. [2024-10-24 02:51:43,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2738 transitions. [2024-10-24 02:51:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:43,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:43,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:51:43,323 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2024-10-24 02:51:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729015982] [2024-10-24 02:51:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:43,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:43,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729015982] [2024-10-24 02:51:43,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729015982] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:43,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:43,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:43,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572315900] [2024-10-24 02:51:43,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:43,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,403 INFO L87 Difference]: Start difference. First operand 1724 states and 2738 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:43,438 INFO L93 Difference]: Finished difference Result 1910 states and 3031 transitions. [2024-10-24 02:51:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:43,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:43,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:43,443 INFO L225 Difference]: With dead ends: 1910 [2024-10-24 02:51:43,443 INFO L226 Difference]: Without dead ends: 1814 [2024-10-24 02:51:43,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,445 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:43,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2024-10-24 02:51:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2024-10-24 02:51:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.5883977900552486) internal successors, (2875), 1811 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2875 transitions. [2024-10-24 02:51:43,473 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2875 transitions. Word has length 66 [2024-10-24 02:51:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:43,473 INFO L471 AbstractCegarLoop]: Abstraction has 1812 states and 2875 transitions. [2024-10-24 02:51:43,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2875 transitions. [2024-10-24 02:51:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:43,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:43,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:43,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:51:43,474 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:43,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2024-10-24 02:51:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:43,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556090756] [2024-10-24 02:51:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:43,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556090756] [2024-10-24 02:51:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556090756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:43,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:43,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122158017] [2024-10-24 02:51:43,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:43,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:43,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,520 INFO L87 Difference]: Start difference. First operand 1812 states and 2875 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:43,548 INFO L93 Difference]: Finished difference Result 2310 states and 3655 transitions. [2024-10-24 02:51:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:43,554 INFO L225 Difference]: With dead ends: 2310 [2024-10-24 02:51:43,554 INFO L226 Difference]: Without dead ends: 2049 [2024-10-24 02:51:43,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,556 INFO L432 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:43,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2024-10-24 02:51:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2024-10-24 02:51:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.5828850855745722) internal successors, (3237), 2046 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3237 transitions. [2024-10-24 02:51:43,588 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3237 transitions. Word has length 66 [2024-10-24 02:51:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:43,589 INFO L471 AbstractCegarLoop]: Abstraction has 2047 states and 3237 transitions. [2024-10-24 02:51:43,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3237 transitions. [2024-10-24 02:51:43,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:43,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:43,590 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:43,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:51:43,590 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:43,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2024-10-24 02:51:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992474978] [2024-10-24 02:51:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992474978] [2024-10-24 02:51:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992474978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:43,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269974720] [2024-10-24 02:51:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,635 INFO L87 Difference]: Start difference. First operand 2047 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:43,755 INFO L93 Difference]: Finished difference Result 2991 states and 4699 transitions. [2024-10-24 02:51:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:43,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:43,766 INFO L225 Difference]: With dead ends: 2991 [2024-10-24 02:51:43,773 INFO L226 Difference]: Without dead ends: 2495 [2024-10-24 02:51:43,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,775 INFO L432 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:43,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2024-10-24 02:51:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2024-10-24 02:51:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.5708550782818145) internal successors, (3913), 2492 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3913 transitions. [2024-10-24 02:51:43,869 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3913 transitions. Word has length 66 [2024-10-24 02:51:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:43,870 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 3913 transitions. [2024-10-24 02:51:43,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3913 transitions. [2024-10-24 02:51:43,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:43,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:43,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:43,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:51:43,871 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:43,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2024-10-24 02:51:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596651050] [2024-10-24 02:51:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:43,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:43,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596651050] [2024-10-24 02:51:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596651050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:43,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:43,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107477629] [2024-10-24 02:51:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:43,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:43,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:43,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,970 INFO L87 Difference]: Start difference. First operand 2493 states and 3913 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:44,048 INFO L93 Difference]: Finished difference Result 4281 states and 6643 transitions. [2024-10-24 02:51:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:44,068 INFO L225 Difference]: With dead ends: 4281 [2024-10-24 02:51:44,068 INFO L226 Difference]: Without dead ends: 3339 [2024-10-24 02:51:44,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:44,074 INFO L432 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:44,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2024-10-24 02:51:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2024-10-24 02:51:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.5499250374812594) internal successors, (5169), 3336 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5169 transitions. [2024-10-24 02:51:44,193 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5169 transitions. Word has length 66 [2024-10-24 02:51:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:44,197 INFO L471 AbstractCegarLoop]: Abstraction has 3337 states and 5169 transitions. [2024-10-24 02:51:44,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5169 transitions. [2024-10-24 02:51:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:44,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:44,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:44,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:51:44,198 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:44,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2024-10-24 02:51:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454132137] [2024-10-24 02:51:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:44,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:44,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454132137] [2024-10-24 02:51:44,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454132137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:44,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:44,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948819640] [2024-10-24 02:51:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:44,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:44,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:44,292 INFO L87 Difference]: Start difference. First operand 3337 states and 5169 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:44,381 INFO L93 Difference]: Finished difference Result 6717 states and 10243 transitions. [2024-10-24 02:51:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:44,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:44,403 INFO L225 Difference]: With dead ends: 6717 [2024-10-24 02:51:44,403 INFO L226 Difference]: Without dead ends: 4931 [2024-10-24 02:51:44,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:44,410 INFO L432 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:44,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2024-10-24 02:51:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2024-10-24 02:51:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.519991881469454) internal successors, (7489), 4928 states have internal predecessors, (7489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7489 transitions. [2024-10-24 02:51:44,510 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7489 transitions. Word has length 66 [2024-10-24 02:51:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:44,510 INFO L471 AbstractCegarLoop]: Abstraction has 4929 states and 7489 transitions. [2024-10-24 02:51:44,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7489 transitions. [2024-10-24 02:51:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:44,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:44,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:44,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:51:44,511 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:44,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2024-10-24 02:51:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358090998] [2024-10-24 02:51:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358090998] [2024-10-24 02:51:44,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358090998] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:44,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:44,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:44,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36837775] [2024-10-24 02:51:44,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:44,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:44,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:44,556 INFO L87 Difference]: Start difference. First operand 4929 states and 7489 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:44,649 INFO L93 Difference]: Finished difference Result 11301 states and 16867 transitions. [2024-10-24 02:51:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:44,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:44,667 INFO L225 Difference]: With dead ends: 11301 [2024-10-24 02:51:44,667 INFO L226 Difference]: Without dead ends: 7923 [2024-10-24 02:51:44,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:44,673 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:44,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2024-10-24 02:51:44,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2024-10-24 02:51:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.4831418108347014) internal successors, (11745), 7920 states have internal predecessors, (11745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11745 transitions. [2024-10-24 02:51:44,833 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11745 transitions. Word has length 66 [2024-10-24 02:51:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:44,833 INFO L471 AbstractCegarLoop]: Abstraction has 7921 states and 11745 transitions. [2024-10-24 02:51:44,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11745 transitions. [2024-10-24 02:51:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:44,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:44,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:44,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:51:44,836 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:44,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2024-10-24 02:51:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724494873] [2024-10-24 02:51:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:44,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:51:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724494873] [2024-10-24 02:51:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724494873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:45,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532129007] [2024-10-24 02:51:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:45,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:45,135 INFO L87 Difference]: Start difference. First operand 7921 states and 11745 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:45,837 INFO L93 Difference]: Finished difference Result 45567 states and 66568 transitions. [2024-10-24 02:51:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-24 02:51:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:45,908 INFO L225 Difference]: With dead ends: 45567 [2024-10-24 02:51:45,909 INFO L226 Difference]: Without dead ends: 41085 [2024-10-24 02:51:45,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:45,930 INFO L432 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:45,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2024-10-24 02:51:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2024-10-24 02:51:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.4660528482670858) internal successors, (19585), 13360 states have internal predecessors, (19585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19585 transitions. [2024-10-24 02:51:46,766 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19585 transitions. Word has length 86 [2024-10-24 02:51:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:46,766 INFO L471 AbstractCegarLoop]: Abstraction has 13361 states and 19585 transitions. [2024-10-24 02:51:46,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19585 transitions. [2024-10-24 02:51:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:46,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:46,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:46,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:51:46,770 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:46,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2024-10-24 02:51:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823126254] [2024-10-24 02:51:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:51:46,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:46,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823126254] [2024-10-24 02:51:46,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823126254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:46,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:46,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:46,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682486351] [2024-10-24 02:51:46,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:46,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:46,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:46,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:46,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:46,947 INFO L87 Difference]: Start difference. First operand 13361 states and 19585 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:48,030 INFO L93 Difference]: Finished difference Result 51935 states and 75784 transitions. [2024-10-24 02:51:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:48,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-24 02:51:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:48,094 INFO L225 Difference]: With dead ends: 51935 [2024-10-24 02:51:48,094 INFO L226 Difference]: Without dead ends: 45565 [2024-10-24 02:51:48,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:48,110 INFO L432 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:48,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2024-10-24 02:51:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2024-10-24 02:51:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.4553193426503392) internal successors, (31969), 21968 states have internal predecessors, (31969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 31969 transitions. [2024-10-24 02:51:49,161 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 31969 transitions. Word has length 86 [2024-10-24 02:51:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:49,161 INFO L471 AbstractCegarLoop]: Abstraction has 21969 states and 31969 transitions. [2024-10-24 02:51:49,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 31969 transitions. [2024-10-24 02:51:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:49,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:49,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:49,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:51:49,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:49,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2024-10-24 02:51:49,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175612532] [2024-10-24 02:51:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 02:51:49,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:49,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175612532] [2024-10-24 02:51:49,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175612532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:49,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:49,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375768981] [2024-10-24 02:51:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:49,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:49,393 INFO L87 Difference]: Start difference. First operand 21969 states and 31969 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:50,955 INFO L93 Difference]: Finished difference Result 58303 states and 84968 transitions. [2024-10-24 02:51:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-24 02:51:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:51,157 INFO L225 Difference]: With dead ends: 58303 [2024-10-24 02:51:51,157 INFO L226 Difference]: Without dead ends: 51933 [2024-10-24 02:51:51,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:51,190 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:51,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:51:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2024-10-24 02:51:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2024-10-24 02:51:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4523733898006) internal successors, (41153), 28336 states have internal predecessors, (41153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41153 transitions. [2024-10-24 02:51:52,525 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41153 transitions. Word has length 86 [2024-10-24 02:51:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:52,526 INFO L471 AbstractCegarLoop]: Abstraction has 28337 states and 41153 transitions. [2024-10-24 02:51:52,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41153 transitions. [2024-10-24 02:51:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:52,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:52,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:52,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:51:52,530 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:52,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2024-10-24 02:51:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187713147] [2024-10-24 02:51:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 02:51:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187713147] [2024-10-24 02:51:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187713147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:52,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065908906] [2024-10-24 02:51:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:52,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:52,680 INFO L87 Difference]: Start difference. First operand 28337 states and 41153 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:53,935 INFO L93 Difference]: Finished difference Result 64671 states and 94152 transitions. [2024-10-24 02:51:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-24 02:51:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:54,170 INFO L225 Difference]: With dead ends: 64671 [2024-10-24 02:51:54,170 INFO L226 Difference]: Without dead ends: 58301 [2024-10-24 02:51:54,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:54,213 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:54,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2024-10-24 02:51:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2024-10-24 02:51:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4505086015618247) internal successors, (50337), 34704 states have internal predecessors, (50337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50337 transitions. [2024-10-24 02:51:55,722 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50337 transitions. Word has length 86 [2024-10-24 02:51:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:55,724 INFO L471 AbstractCegarLoop]: Abstraction has 34705 states and 50337 transitions. [2024-10-24 02:51:55,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50337 transitions. [2024-10-24 02:51:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:55,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:55,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:55,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:51:55,730 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:55,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2024-10-24 02:51:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:55,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820196024] [2024-10-24 02:51:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 02:51:55,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:55,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820196024] [2024-10-24 02:51:55,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820196024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:55,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:55,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379915762] [2024-10-24 02:51:55,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:55,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:55,870 INFO L87 Difference]: Start difference. First operand 34705 states and 50337 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:57,331 INFO L93 Difference]: Finished difference Result 71039 states and 103336 transitions. [2024-10-24 02:51:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:57,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 86 [2024-10-24 02:51:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:57,429 INFO L225 Difference]: With dead ends: 71039 [2024-10-24 02:51:57,429 INFO L226 Difference]: Without dead ends: 64669 [2024-10-24 02:51:57,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:57,452 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 8073 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:57,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3975 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2024-10-24 02:51:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2024-10-24 02:51:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4492220788390835) internal successors, (59521), 41072 states have internal predecessors, (59521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59521 transitions. [2024-10-24 02:51:58,935 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59521 transitions. Word has length 86 [2024-10-24 02:51:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:58,935 INFO L471 AbstractCegarLoop]: Abstraction has 41073 states and 59521 transitions. [2024-10-24 02:51:58,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59521 transitions. [2024-10-24 02:51:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:58,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:58,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:58,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:51:58,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:58,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2024-10-24 02:51:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493920110] [2024-10-24 02:51:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:51:59,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:59,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493920110] [2024-10-24 02:51:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493920110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:59,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955766318] [2024-10-24 02:51:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:59,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:59,107 INFO L87 Difference]: Start difference. First operand 41073 states and 59521 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:00,954 INFO L93 Difference]: Finished difference Result 77407 states and 112520 transitions. [2024-10-24 02:52:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:52:00,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 86 [2024-10-24 02:52:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:01,049 INFO L225 Difference]: With dead ends: 77407 [2024-10-24 02:52:01,049 INFO L226 Difference]: Without dead ends: 71037 [2024-10-24 02:52:01,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:52:01,068 INFO L432 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:01,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:52:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2024-10-24 02:52:02,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2024-10-24 02:52:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.448280950272982) internal successors, (68705), 47440 states have internal predecessors, (68705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68705 transitions. [2024-10-24 02:52:02,925 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68705 transitions. Word has length 86 [2024-10-24 02:52:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:02,925 INFO L471 AbstractCegarLoop]: Abstraction has 47441 states and 68705 transitions. [2024-10-24 02:52:02,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68705 transitions. [2024-10-24 02:52:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 02:52:02,929 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:02,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:02,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:52:02,930 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:02,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:02,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2024-10-24 02:52:02,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777655102] [2024-10-24 02:52:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777655102] [2024-10-24 02:52:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777655102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:52:03,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:52:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:52:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281463122] [2024-10-24 02:52:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:52:03,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:52:03,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:52:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:03,023 INFO L87 Difference]: Start difference. First operand 47441 states and 68705 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:04,050 INFO L93 Difference]: Finished difference Result 93333 states and 134947 transitions. [2024-10-24 02:52:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:52:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-24 02:52:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:04,109 INFO L225 Difference]: With dead ends: 93333 [2024-10-24 02:52:04,110 INFO L226 Difference]: Without dead ends: 47443 [2024-10-24 02:52:04,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:04,142 INFO L432 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 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 [2024-10-24 02:52:04,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:04,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2024-10-24 02:52:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2024-10-24 02:52:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4337781150530156) internal successors, (68017), 47440 states have internal predecessors, (68017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68017 transitions. [2024-10-24 02:52:05,671 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68017 transitions. Word has length 87 [2024-10-24 02:52:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:05,673 INFO L471 AbstractCegarLoop]: Abstraction has 47441 states and 68017 transitions. [2024-10-24 02:52:05,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68017 transitions. [2024-10-24 02:52:05,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 02:52:05,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:05,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:05,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 02:52:05,682 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:05,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2024-10-24 02:52:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:05,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103074138] [2024-10-24 02:52:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103074138] [2024-10-24 02:52:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103074138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:52:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:52:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:52:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104436852] [2024-10-24 02:52:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:52:05,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:52:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:52:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:05,771 INFO L87 Difference]: Start difference. First operand 47441 states and 68017 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:06,322 INFO L93 Difference]: Finished difference Result 64265 states and 92280 transitions. [2024-10-24 02:52:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:52:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-24 02:52:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:06,351 INFO L225 Difference]: With dead ends: 64265 [2024-10-24 02:52:06,351 INFO L226 Difference]: Without dead ends: 18375 [2024-10-24 02:52:06,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:06,383 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 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 [2024-10-24 02:52:06,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2024-10-24 02:52:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2024-10-24 02:52:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4417946204943919) internal successors, (26480), 18367 states have internal predecessors, (26480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26480 transitions. [2024-10-24 02:52:06,953 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26480 transitions. Word has length 88 [2024-10-24 02:52:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:06,953 INFO L471 AbstractCegarLoop]: Abstraction has 18368 states and 26480 transitions. [2024-10-24 02:52:06,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26480 transitions. [2024-10-24 02:52:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 02:52:06,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:06,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:06,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:52:06,956 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:06,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2024-10-24 02:52:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:06,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755459920] [2024-10-24 02:52:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:06,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755459920] [2024-10-24 02:52:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755459920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:52:07,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:52:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:52:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448743921] [2024-10-24 02:52:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:52:07,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:52:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:52:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:07,032 INFO L87 Difference]: Start difference. First operand 18368 states and 26480 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:07,202 INFO L93 Difference]: Finished difference Result 26772 states and 38482 transitions. [2024-10-24 02:52:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:52:07,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 02:52:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:07,216 INFO L225 Difference]: With dead ends: 26772 [2024-10-24 02:52:07,217 INFO L226 Difference]: Without dead ends: 9970 [2024-10-24 02:52:07,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:07,231 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 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 [2024-10-24 02:52:07,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2024-10-24 02:52:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2024-10-24 02:52:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4408990567930966) internal successors, (14360), 9967 states have internal predecessors, (14360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14360 transitions. [2024-10-24 02:52:07,615 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14360 transitions. Word has length 89 [2024-10-24 02:52:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:07,616 INFO L471 AbstractCegarLoop]: Abstraction has 9968 states and 14360 transitions. [2024-10-24 02:52:07,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14360 transitions. [2024-10-24 02:52:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:52:07,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:07,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:07,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 02:52:07,618 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:07,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2024-10-24 02:52:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725613799] [2024-10-24 02:52:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725613799] [2024-10-24 02:52:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725613799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:52:07,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:52:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:52:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49361752] [2024-10-24 02:52:07,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:52:07,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:52:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:52:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:07,696 INFO L87 Difference]: Start difference. First operand 9968 states and 14360 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:07,796 INFO L93 Difference]: Finished difference Result 14172 states and 20302 transitions. [2024-10-24 02:52:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:52:07,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-24 02:52:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:07,805 INFO L225 Difference]: With dead ends: 14172 [2024-10-24 02:52:07,805 INFO L226 Difference]: Without dead ends: 5770 [2024-10-24 02:52:07,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:07,812 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 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 [2024-10-24 02:52:07,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:07,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2024-10-24 02:52:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2024-10-24 02:52:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.4498785986819285) internal successors, (8360), 5767 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8360 transitions. [2024-10-24 02:52:07,926 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8360 transitions. Word has length 91 [2024-10-24 02:52:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:07,927 INFO L471 AbstractCegarLoop]: Abstraction has 5768 states and 8360 transitions. [2024-10-24 02:52:07,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8360 transitions. [2024-10-24 02:52:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 02:52:07,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:07,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:07,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 02:52:07,929 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2024-10-24 02:52:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902912126] [2024-10-24 02:52:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:08,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:08,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902912126] [2024-10-24 02:52:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902912126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:52:08,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:52:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:52:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981553027] [2024-10-24 02:52:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:52:08,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:52:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:52:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:08,033 INFO L87 Difference]: Start difference. First operand 5768 states and 8360 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:08,088 INFO L93 Difference]: Finished difference Result 7872 states and 11302 transitions. [2024-10-24 02:52:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:52:08,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-10-24 02:52:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:08,095 INFO L225 Difference]: With dead ends: 7872 [2024-10-24 02:52:08,095 INFO L226 Difference]: Without dead ends: 3670 [2024-10-24 02:52:08,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:08,098 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 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 [2024-10-24 02:52:08,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2024-10-24 02:52:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3668. [2024-10-24 02:52:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3666 states have (on average 1.470267321331151) internal successors, (5390), 3667 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5390 transitions. [2024-10-24 02:52:08,158 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5390 transitions. Word has length 93 [2024-10-24 02:52:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:08,159 INFO L471 AbstractCegarLoop]: Abstraction has 3668 states and 5390 transitions. [2024-10-24 02:52:08,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5390 transitions. [2024-10-24 02:52:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-24 02:52:08,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:08,160 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:08,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 02:52:08,160 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:08,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2024-10-24 02:52:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:08,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749808513] [2024-10-24 02:52:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:08,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749808513] [2024-10-24 02:52:08,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749808513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:52:08,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:52:08,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:52:08,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383446457] [2024-10-24 02:52:08,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:52:08,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:52:08,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:52:08,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:08,296 INFO L87 Difference]: Start difference. First operand 3668 states and 5390 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:08,334 INFO L93 Difference]: Finished difference Result 4722 states and 6847 transitions. [2024-10-24 02:52:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:52:08,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-10-24 02:52:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:08,339 INFO L225 Difference]: With dead ends: 4722 [2024-10-24 02:52:08,339 INFO L226 Difference]: Without dead ends: 2620 [2024-10-24 02:52:08,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:52:08,340 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 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 [2024-10-24 02:52:08,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2024-10-24 02:52:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2024-10-24 02:52:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 1.4984709480122325) internal successors, (3920), 2617 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3920 transitions. [2024-10-24 02:52:08,378 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3920 transitions. Word has length 95 [2024-10-24 02:52:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:08,379 INFO L471 AbstractCegarLoop]: Abstraction has 2618 states and 3920 transitions. [2024-10-24 02:52:08,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3920 transitions. [2024-10-24 02:52:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 02:52:08,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:08,380 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:08,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 02:52:08,381 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:08,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2024-10-24 02:52:08,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:08,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671607036] [2024-10-24 02:52:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:52:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:08,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671607036] [2024-10-24 02:52:08,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671607036] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:08,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939585089] [2024-10-24 02:52:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:08,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:52:08,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:52:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:08,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:52:08,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:52:08,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:52:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939585089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:09,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:09,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-24 02:52:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331845530] [2024-10-24 02:52:09,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:09,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:52:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:52:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:52:09,150 INFO L87 Difference]: Start difference. First operand 2618 states and 3920 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:09,279 INFO L93 Difference]: Finished difference Result 5154 states and 7319 transitions. [2024-10-24 02:52:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:52:09,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-24 02:52:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:09,286 INFO L225 Difference]: With dead ends: 5154 [2024-10-24 02:52:09,286 INFO L226 Difference]: Without dead ends: 4102 [2024-10-24 02:52:09,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:52:09,288 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 1583 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:09,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3445 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:52:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2024-10-24 02:52:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4025. [2024-10-24 02:52:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4023 states have (on average 1.4195873726075068) internal successors, (5711), 4024 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5711 transitions. [2024-10-24 02:52:09,369 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5711 transitions. Word has length 97 [2024-10-24 02:52:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:09,369 INFO L471 AbstractCegarLoop]: Abstraction has 4025 states and 5711 transitions. [2024-10-24 02:52:09,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5711 transitions. [2024-10-24 02:52:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 02:52:09,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:09,370 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:09,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 02:52:09,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 02:52:09,572 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:09,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2024-10-24 02:52:09,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:09,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638775678] [2024-10-24 02:52:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:09,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:10,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638775678] [2024-10-24 02:52:10,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638775678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680244641] [2024-10-24 02:52:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:10,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:10,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:52:10,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:52:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:10,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:52:10,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:11,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680244641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:11,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:11,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-10-24 02:52:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876977801] [2024-10-24 02:52:11,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:11,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 02:52:11,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 02:52:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-10-24 02:52:11,939 INFO L87 Difference]: Start difference. First operand 4025 states and 5711 transitions. Second operand has 26 states, 26 states have (on average 9.5) internal successors, (247), 25 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:12,609 INFO L93 Difference]: Finished difference Result 8789 states and 11985 transitions. [2024-10-24 02:52:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:52:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.5) internal successors, (247), 25 states have internal predecessors, (247), 0 states have call successors, (0), 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 98 [2024-10-24 02:52:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:12,617 INFO L225 Difference]: With dead ends: 8789 [2024-10-24 02:52:12,618 INFO L226 Difference]: Without dead ends: 6513 [2024-10-24 02:52:12,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 02:52:12,620 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 16825 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16825 SdHoareTripleChecker+Valid, 6372 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:12,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16825 Valid, 6372 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:52:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6513 states. [2024-10-24 02:52:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6513 to 6451. [2024-10-24 02:52:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6451 states, 6449 states have (on average 1.3674988370289967) internal successors, (8819), 6450 states have internal predecessors, (8819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 8819 transitions. [2024-10-24 02:52:12,754 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 8819 transitions. Word has length 98 [2024-10-24 02:52:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:12,754 INFO L471 AbstractCegarLoop]: Abstraction has 6451 states and 8819 transitions. [2024-10-24 02:52:12,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.5) internal successors, (247), 25 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 8819 transitions. [2024-10-24 02:52:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 02:52:12,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:12,755 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:12,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 02:52:12,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-24 02:52:12,956 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:12,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1604294219, now seen corresponding path program 1 times [2024-10-24 02:52:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246046424] [2024-10-24 02:52:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:12,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:13,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246046424] [2024-10-24 02:52:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246046424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413614259] [2024-10-24 02:52:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:13,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:13,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:52:13,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:52:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:13,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:52:13,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:14,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413614259] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:14,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-24 02:52:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998162297] [2024-10-24 02:52:14,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:14,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:52:14,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:52:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:52:14,954 INFO L87 Difference]: Start difference. First operand 6451 states and 8819 transitions. Second operand has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:18,063 INFO L93 Difference]: Finished difference Result 29187 states and 38602 transitions. [2024-10-24 02:52:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 02:52:18,064 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 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 98 [2024-10-24 02:52:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:18,085 INFO L225 Difference]: With dead ends: 29187 [2024-10-24 02:52:18,085 INFO L226 Difference]: Without dead ends: 24364 [2024-10-24 02:52:18,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1055, Invalid=4201, Unknown=0, NotChecked=0, Total=5256 [2024-10-24 02:52:18,091 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 26745 mSDsluCounter, 5264 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26745 SdHoareTripleChecker+Valid, 6794 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:18,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26745 Valid, 6794 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:52:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24364 states. [2024-10-24 02:52:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24364 to 23848. [2024-10-24 02:52:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23848 states, 23846 states have (on average 1.3038664765579133) internal successors, (31092), 23847 states have internal predecessors, (31092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23848 states to 23848 states and 31092 transitions. [2024-10-24 02:52:18,635 INFO L78 Accepts]: Start accepts. Automaton has 23848 states and 31092 transitions. Word has length 98 [2024-10-24 02:52:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:18,636 INFO L471 AbstractCegarLoop]: Abstraction has 23848 states and 31092 transitions. [2024-10-24 02:52:18,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 23848 states and 31092 transitions. [2024-10-24 02:52:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:52:18,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:18,638 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:18,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 02:52:18,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:18,842 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:18,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash -645036193, now seen corresponding path program 1 times [2024-10-24 02:52:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923495899] [2024-10-24 02:52:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:19,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923495899] [2024-10-24 02:52:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923495899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796298184] [2024-10-24 02:52:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:19,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:19,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:19,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:52:19,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:52:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:19,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 02:52:19,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:19,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796298184] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:21,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:21,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-10-24 02:52:21,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201549432] [2024-10-24 02:52:21,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:21,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:52:21,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:52:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:52:21,139 INFO L87 Difference]: Start difference. First operand 23848 states and 31092 transitions. Second operand has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:23,576 INFO L93 Difference]: Finished difference Result 58149 states and 75365 transitions. [2024-10-24 02:52:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-24 02:52:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 0 states have call successors, (0), 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 99 [2024-10-24 02:52:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:23,623 INFO L225 Difference]: With dead ends: 58149 [2024-10-24 02:52:23,623 INFO L226 Difference]: Without dead ends: 37823 [2024-10-24 02:52:23,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=712, Invalid=2828, Unknown=0, NotChecked=0, Total=3540 [2024-10-24 02:52:23,647 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 15772 mSDsluCounter, 12333 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15772 SdHoareTripleChecker+Valid, 13835 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:23,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15772 Valid, 13835 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:52:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37823 states. [2024-10-24 02:52:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37823 to 37811. [2024-10-24 02:52:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37811 states, 37809 states have (on average 1.2846412229892354) internal successors, (48571), 37810 states have internal predecessors, (48571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37811 states to 37811 states and 48571 transitions. [2024-10-24 02:52:24,969 INFO L78 Accepts]: Start accepts. Automaton has 37811 states and 48571 transitions. Word has length 99 [2024-10-24 02:52:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:24,969 INFO L471 AbstractCegarLoop]: Abstraction has 37811 states and 48571 transitions. [2024-10-24 02:52:24,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 37811 states and 48571 transitions. [2024-10-24 02:52:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:52:24,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:24,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:24,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:52:25,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-24 02:52:25,172 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:25,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -932362033, now seen corresponding path program 1 times [2024-10-24 02:52:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957040188] [2024-10-24 02:52:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:25,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957040188] [2024-10-24 02:52:25,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957040188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:25,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974998977] [2024-10-24 02:52:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:25,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:52:25,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:52:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:25,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 02:52:25,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:26,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:27,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974998977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:27,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:27,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-10-24 02:52:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863482623] [2024-10-24 02:52:27,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:27,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 02:52:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 02:52:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-10-24 02:52:27,613 INFO L87 Difference]: Start difference. First operand 37811 states and 48571 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)