./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16d5feefc85136540ef4669433de80b700c3a57c51c2b65f22ef098d8e79a29f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 03:40:45,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 03:40:45,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 03:40:45,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 03:40:45,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 03:40:45,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 03:40:45,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 03:40:45,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 03:40:45,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 03:40:45,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 03:40:45,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 03:40:45,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 03:40:45,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 03:40:45,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 03:40:45,984 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 03:40:45,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 03:40:45,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 03:40:45,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 03:40:45,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 03:40:45,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 03:40:45,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 03:40:45,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 03:40:45,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 03:40:45,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 03:40:45,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 03:40:45,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 03:40:45,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 03:40:45,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 03:40:45,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 03:40:45,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 03:40:45,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 03:40:45,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 03:40:45,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:40:45,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 03:40:45,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 03:40:45,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 03:40:45,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 03:40:45,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 03:40:45,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 03:40:45,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 03:40:45,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 03:40:45,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 03:40:46,000 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16d5feefc85136540ef4669433de80b700c3a57c51c2b65f22ef098d8e79a29f [2024-10-11 03:40:46,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 03:40:46,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 03:40:46,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 03:40:46,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 03:40:46,282 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 03:40:46,283 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-11 03:40:47,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 03:40:47,894 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 03:40:47,894 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-11 03:40:47,904 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6a3222004/6577889671874f73b84e4a6d669ff16f/FLAGf37089782 [2024-10-11 03:40:48,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6a3222004/6577889671874f73b84e4a6d669ff16f [2024-10-11 03:40:48,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 03:40:48,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 03:40:48,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 03:40:48,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 03:40:48,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 03:40:48,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6de672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48, skipping insertion in model container [2024-10-11 03:40:48,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 03:40:48,545 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2024-10-11 03:40:48,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:40:48,596 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 03:40:48,647 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2024-10-11 03:40:48,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:40:48,698 INFO L204 MainTranslator]: Completed translation [2024-10-11 03:40:48,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48 WrapperNode [2024-10-11 03:40:48,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 03:40:48,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 03:40:48,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 03:40:48,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 03:40:48,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,768 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 466 [2024-10-11 03:40:48,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 03:40:48,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 03:40:48,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 03:40:48,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 03:40:48,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,826 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 03:40:48,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 03:40:48,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 03:40:48,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 03:40:48,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 03:40:48,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (1/1) ... [2024-10-11 03:40:48,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:40:48,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:40:48,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 03:40:48,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 03:40:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 03:40:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 03:40:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 03:40:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 03:40:49,084 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 03:40:49,086 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 03:40:49,577 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-10-11 03:40:49,577 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 03:40:49,620 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 03:40:49,620 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 03:40:49,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:40:49 BoogieIcfgContainer [2024-10-11 03:40:49,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 03:40:49,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 03:40:49,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 03:40:49,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 03:40:49,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:40:48" (1/3) ... [2024-10-11 03:40:49,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec0d882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:40:49, skipping insertion in model container [2024-10-11 03:40:49,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:40:48" (2/3) ... [2024-10-11 03:40:49,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec0d882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:40:49, skipping insertion in model container [2024-10-11 03:40:49,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:40:49" (3/3) ... [2024-10-11 03:40:49,634 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-11 03:40:49,652 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 03:40:49,653 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 03:40:49,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 03:40:49,729 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;@22168e4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 03:40:49,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 03:40:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-11 03:40:49,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:49,746 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] [2024-10-11 03:40:49,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:49,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1500294558, now seen corresponding path program 1 times [2024-10-11 03:40:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499671339] [2024-10-11 03:40:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:50,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:50,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499671339] [2024-10-11 03:40:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499671339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:50,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:40:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166589426] [2024-10-11 03:40:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:50,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:40:50,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:50,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:40:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:50,245 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:50,336 INFO L93 Difference]: Finished difference Result 262 states and 421 transitions. [2024-10-11 03:40:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:40:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-10-11 03:40:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:50,353 INFO L225 Difference]: With dead ends: 262 [2024-10-11 03:40:50,354 INFO L226 Difference]: Without dead ends: 174 [2024-10-11 03:40:50,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:50,362 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 129 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:50,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 376 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:40:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-11 03:40:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-10-11 03:40:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.5087719298245614) internal successors, (258), 171 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 258 transitions. [2024-10-11 03:40:50,406 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 258 transitions. Word has length 48 [2024-10-11 03:40:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:50,406 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 258 transitions. [2024-10-11 03:40:50,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,407 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 258 transitions. [2024-10-11 03:40:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 03:40:50,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:50,408 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] [2024-10-11 03:40:50,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 03:40:50,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:50,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1904231256, now seen corresponding path program 1 times [2024-10-11 03:40:50,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:50,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953214966] [2024-10-11 03:40:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:50,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:50,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:50,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953214966] [2024-10-11 03:40:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953214966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:40:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885243431] [2024-10-11 03:40:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:50,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:40:50,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:50,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:40:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:50,572 INFO L87 Difference]: Start difference. First operand 172 states and 258 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:50,618 INFO L93 Difference]: Finished difference Result 432 states and 670 transitions. [2024-10-11 03:40:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:40:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-10-11 03:40:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:50,621 INFO L225 Difference]: With dead ends: 432 [2024-10-11 03:40:50,621 INFO L226 Difference]: Without dead ends: 286 [2024-10-11 03:40:50,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:50,623 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 108 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:50,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 327 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:40:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-10-11 03:40:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2024-10-11 03:40:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.5371024734982333) internal successors, (435), 283 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 435 transitions. [2024-10-11 03:40:50,653 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 435 transitions. Word has length 49 [2024-10-11 03:40:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:50,654 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 435 transitions. [2024-10-11 03:40:50,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 435 transitions. [2024-10-11 03:40:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 03:40:50,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:50,656 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] [2024-10-11 03:40:50,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 03:40:50,656 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:50,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash -583215553, now seen corresponding path program 1 times [2024-10-11 03:40:50,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:50,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66358594] [2024-10-11 03:40:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:50,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66358594] [2024-10-11 03:40:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66358594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:50,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:50,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:40:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679185539] [2024-10-11 03:40:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:50,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:40:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:40:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:50,801 INFO L87 Difference]: Start difference. First operand 284 states and 435 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:50,836 INFO L93 Difference]: Finished difference Result 736 states and 1149 transitions. [2024-10-11 03:40:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:40:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-10-11 03:40:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:50,839 INFO L225 Difference]: With dead ends: 736 [2024-10-11 03:40:50,840 INFO L226 Difference]: Without dead ends: 478 [2024-10-11 03:40:50,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:50,843 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 103 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:50,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 312 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:40:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-10-11 03:40:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 476. [2024-10-11 03:40:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.5473684210526315) internal successors, (735), 475 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 735 transitions. [2024-10-11 03:40:50,871 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 735 transitions. Word has length 50 [2024-10-11 03:40:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:50,873 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 735 transitions. [2024-10-11 03:40:50,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 735 transitions. [2024-10-11 03:40:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 03:40:50,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:50,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:40:50,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 03:40:50,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:50,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1140177137, now seen corresponding path program 1 times [2024-10-11 03:40:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590742294] [2024-10-11 03:40:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:51,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:51,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590742294] [2024-10-11 03:40:51,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590742294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:51,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:51,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:40:51,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129764610] [2024-10-11 03:40:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:51,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:40:51,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:40:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:40:51,156 INFO L87 Difference]: Start difference. First operand 476 states and 735 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:51,304 INFO L93 Difference]: Finished difference Result 2726 states and 4280 transitions. [2024-10-11 03:40:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:40:51,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-11 03:40:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:51,315 INFO L225 Difference]: With dead ends: 2726 [2024-10-11 03:40:51,315 INFO L226 Difference]: Without dead ends: 2276 [2024-10-11 03:40:51,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-11 03:40:51,321 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 1016 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:51,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1216 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:40:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2024-10-11 03:40:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 924. [2024-10-11 03:40:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.5460455037919827) internal successors, (1427), 923 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1427 transitions. [2024-10-11 03:40:51,364 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1427 transitions. Word has length 51 [2024-10-11 03:40:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:51,365 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1427 transitions. [2024-10-11 03:40:51,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1427 transitions. [2024-10-11 03:40:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 03:40:51,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:51,367 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] [2024-10-11 03:40:51,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 03:40:51,367 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:51,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1005209156, now seen corresponding path program 1 times [2024-10-11 03:40:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:51,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775641240] [2024-10-11 03:40:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:51,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775641240] [2024-10-11 03:40:51,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775641240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:51,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:51,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:40:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703924331] [2024-10-11 03:40:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:51,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:40:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:40:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:40:51,596 INFO L87 Difference]: Start difference. First operand 924 states and 1427 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:51,721 INFO L93 Difference]: Finished difference Result 4028 states and 6231 transitions. [2024-10-11 03:40:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:40:51,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-11 03:40:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:51,736 INFO L225 Difference]: With dead ends: 4028 [2024-10-11 03:40:51,736 INFO L226 Difference]: Without dead ends: 3130 [2024-10-11 03:40:51,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:40:51,740 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 425 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:51,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 741 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:40:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2024-10-11 03:40:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 3124. [2024-10-11 03:40:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 1.5405059237912264) internal successors, (4811), 3123 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4811 transitions. [2024-10-11 03:40:51,823 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4811 transitions. Word has length 52 [2024-10-11 03:40:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:51,823 INFO L471 AbstractCegarLoop]: Abstraction has 3124 states and 4811 transitions. [2024-10-11 03:40:51,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4811 transitions. [2024-10-11 03:40:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 03:40:51,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:51,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:40:51,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 03:40:51,826 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:51,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:51,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1230800526, now seen corresponding path program 1 times [2024-10-11 03:40:51,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707929473] [2024-10-11 03:40:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707929473] [2024-10-11 03:40:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707929473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:51,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:40:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112447551] [2024-10-11 03:40:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:51,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:40:51,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:40:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:51,935 INFO L87 Difference]: Start difference. First operand 3124 states and 4811 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:51,986 INFO L93 Difference]: Finished difference Result 8248 states and 12653 transitions. [2024-10-11 03:40:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:40:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-11 03:40:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:52,008 INFO L225 Difference]: With dead ends: 8248 [2024-10-11 03:40:52,009 INFO L226 Difference]: Without dead ends: 5150 [2024-10-11 03:40:52,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:52,017 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 115 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:52,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 367 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:40:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-10-11 03:40:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5148. [2024-10-11 03:40:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 5147 states have (on average 1.5160287546143385) internal successors, (7803), 5147 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 7803 transitions. [2024-10-11 03:40:52,149 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 7803 transitions. Word has length 53 [2024-10-11 03:40:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:52,149 INFO L471 AbstractCegarLoop]: Abstraction has 5148 states and 7803 transitions. [2024-10-11 03:40:52,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 7803 transitions. [2024-10-11 03:40:52,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 03:40:52,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:52,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:40:52,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 03:40:52,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:52,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1165128050, now seen corresponding path program 1 times [2024-10-11 03:40:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:52,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720156136] [2024-10-11 03:40:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:52,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:52,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720156136] [2024-10-11 03:40:52,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720156136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:52,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:52,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 03:40:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258246074] [2024-10-11 03:40:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:52,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 03:40:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 03:40:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:40:52,535 INFO L87 Difference]: Start difference. First operand 5148 states and 7803 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:52,582 INFO L93 Difference]: Finished difference Result 5406 states and 8188 transitions. [2024-10-11 03:40:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 03:40:52,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-11 03:40:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:52,600 INFO L225 Difference]: With dead ends: 5406 [2024-10-11 03:40:52,601 INFO L226 Difference]: Without dead ends: 5404 [2024-10-11 03:40:52,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:40:52,604 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:52,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 601 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:40:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2024-10-11 03:40:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2024-10-11 03:40:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5403 states have (on average 1.4915787525448825) internal successors, (8059), 5403 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 8059 transitions. [2024-10-11 03:40:52,709 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 8059 transitions. Word has length 54 [2024-10-11 03:40:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:52,709 INFO L471 AbstractCegarLoop]: Abstraction has 5404 states and 8059 transitions. [2024-10-11 03:40:52,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 8059 transitions. [2024-10-11 03:40:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 03:40:52,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:52,710 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:40:52,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 03:40:52,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:52,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1748658131, now seen corresponding path program 1 times [2024-10-11 03:40:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348079164] [2024-10-11 03:40:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:52,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348079164] [2024-10-11 03:40:52,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348079164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:40:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:40:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:40:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209198820] [2024-10-11 03:40:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:40:52,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:40:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:40:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:52,811 INFO L87 Difference]: Start difference. First operand 5404 states and 8059 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:40:52,934 INFO L93 Difference]: Finished difference Result 13258 states and 19787 transitions. [2024-10-11 03:40:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:40:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-11 03:40:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:40:52,968 INFO L225 Difference]: With dead ends: 13258 [2024-10-11 03:40:52,968 INFO L226 Difference]: Without dead ends: 7880 [2024-10-11 03:40:52,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:40:52,979 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 92 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:40:52,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:40:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7880 states. [2024-10-11 03:40:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7880 to 7822. [2024-10-11 03:40:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7822 states, 7821 states have (on average 1.4812683800025572) internal successors, (11585), 7821 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 11585 transitions. [2024-10-11 03:40:53,157 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 11585 transitions. Word has length 55 [2024-10-11 03:40:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:40:53,158 INFO L471 AbstractCegarLoop]: Abstraction has 7822 states and 11585 transitions. [2024-10-11 03:40:53,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:40:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 11585 transitions. [2024-10-11 03:40:53,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 03:40:53,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:40:53,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:40:53,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 03:40:53,164 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:40:53,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:40:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash -88776474, now seen corresponding path program 1 times [2024-10-11 03:40:53,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:40:53,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935467813] [2024-10-11 03:40:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:53,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:40:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:40:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935467813] [2024-10-11 03:40:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935467813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:40:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877857679] [2024-10-11 03:40:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:40:53,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:40:53,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:40:53,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:40:53,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 03:40:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:40:53,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 03:40:53,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:40:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:54,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:40:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:40:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877857679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:40:54,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:40:54,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-11 03:40:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674149660] [2024-10-11 03:40:54,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:40:54,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 03:40:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:40:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 03:40:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-11 03:40:54,884 INFO L87 Difference]: Start difference. First operand 7822 states and 11585 transitions. Second operand has 20 states, 20 states have (on average 11.3) internal successors, (226), 20 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:04,395 INFO L93 Difference]: Finished difference Result 101625 states and 149995 transitions. [2024-10-11 03:41:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-10-11 03:41:04,396 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.3) internal successors, (226), 20 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-11 03:41:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:04,617 INFO L225 Difference]: With dead ends: 101625 [2024-10-11 03:41:04,618 INFO L226 Difference]: Without dead ends: 93831 [2024-10-11 03:41:04,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12177 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4534, Invalid=24536, Unknown=0, NotChecked=0, Total=29070 [2024-10-11 03:41:04,673 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 15914 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15914 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:04,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15914 Valid, 3546 Invalid, 3786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-11 03:41:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93831 states. [2024-10-11 03:41:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93831 to 66049. [2024-10-11 03:41:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66049 states, 66048 states have (on average 1.4464934593023255) internal successors, (95538), 66048 states have internal predecessors, (95538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66049 states to 66049 states and 95538 transitions. [2024-10-11 03:41:06,017 INFO L78 Accepts]: Start accepts. Automaton has 66049 states and 95538 transitions. Word has length 78 [2024-10-11 03:41:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:06,017 INFO L471 AbstractCegarLoop]: Abstraction has 66049 states and 95538 transitions. [2024-10-11 03:41:06,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.3) internal successors, (226), 20 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 66049 states and 95538 transitions. [2024-10-11 03:41:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:06,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:06,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:06,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 03:41:06,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:41:06,229 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:06,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2021495991, now seen corresponding path program 1 times [2024-10-11 03:41:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545139286] [2024-10-11 03:41:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:41:06,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:06,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545139286] [2024-10-11 03:41:06,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545139286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:06,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:06,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:41:06,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893892071] [2024-10-11 03:41:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:06,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:41:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:06,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:41:06,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:06,310 INFO L87 Difference]: Start difference. First operand 66049 states and 95538 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:07,298 INFO L93 Difference]: Finished difference Result 156905 states and 226449 transitions. [2024-10-11 03:41:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:41:07,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 03:41:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:07,547 INFO L225 Difference]: With dead ends: 156905 [2024-10-11 03:41:07,548 INFO L226 Difference]: Without dead ends: 103640 [2024-10-11 03:41:07,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:07,630 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 91 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:07,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 342 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:41:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103640 states. [2024-10-11 03:41:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103640 to 99778. [2024-10-11 03:41:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99778 states, 99777 states have (on average 1.430449903284324) internal successors, (142726), 99777 states have internal predecessors, (142726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99778 states to 99778 states and 142726 transitions. [2024-10-11 03:41:09,596 INFO L78 Accepts]: Start accepts. Automaton has 99778 states and 142726 transitions. Word has length 79 [2024-10-11 03:41:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:09,597 INFO L471 AbstractCegarLoop]: Abstraction has 99778 states and 142726 transitions. [2024-10-11 03:41:09,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 99778 states and 142726 transitions. [2024-10-11 03:41:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:09,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:09,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:09,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 03:41:09,602 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:09,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1614660175, now seen corresponding path program 1 times [2024-10-11 03:41:09,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988972955] [2024-10-11 03:41:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:41:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988972955] [2024-10-11 03:41:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988972955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:09,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:41:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690921893] [2024-10-11 03:41:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:09,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:41:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:41:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:09,671 INFO L87 Difference]: Start difference. First operand 99778 states and 142726 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:10,396 INFO L93 Difference]: Finished difference Result 210702 states and 299934 transitions. [2024-10-11 03:41:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:41:10,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 03:41:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:10,618 INFO L225 Difference]: With dead ends: 210702 [2024-10-11 03:41:10,618 INFO L226 Difference]: Without dead ends: 142079 [2024-10-11 03:41:10,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:10,706 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 92 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:10,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 334 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:41:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142079 states. [2024-10-11 03:41:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142079 to 135831. [2024-10-11 03:41:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135831 states, 135830 states have (on average 1.4112051829492749) internal successors, (191684), 135830 states have internal predecessors, (191684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135831 states to 135831 states and 191684 transitions. [2024-10-11 03:41:13,082 INFO L78 Accepts]: Start accepts. Automaton has 135831 states and 191684 transitions. Word has length 79 [2024-10-11 03:41:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:13,083 INFO L471 AbstractCegarLoop]: Abstraction has 135831 states and 191684 transitions. [2024-10-11 03:41:13,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 135831 states and 191684 transitions. [2024-10-11 03:41:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:13,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:13,092 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:13,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 03:41:13,093 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:13,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash -262022602, now seen corresponding path program 1 times [2024-10-11 03:41:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995466765] [2024-10-11 03:41:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:41:13,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:13,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995466765] [2024-10-11 03:41:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995466765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:13,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:41:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001910838] [2024-10-11 03:41:13,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:13,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:41:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:41:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:13,167 INFO L87 Difference]: Start difference. First operand 135831 states and 191684 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:13,915 INFO L93 Difference]: Finished difference Result 223138 states and 312854 transitions. [2024-10-11 03:41:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:41:13,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 03:41:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:14,126 INFO L225 Difference]: With dead ends: 223138 [2024-10-11 03:41:14,126 INFO L226 Difference]: Without dead ends: 141446 [2024-10-11 03:41:14,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:14,212 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 93 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:14,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:41:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141446 states. [2024-10-11 03:41:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141446 to 134183. [2024-10-11 03:41:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134183 states, 134182 states have (on average 1.3898734554560224) internal successors, (186496), 134182 states have internal predecessors, (186496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134183 states to 134183 states and 186496 transitions. [2024-10-11 03:41:16,939 INFO L78 Accepts]: Start accepts. Automaton has 134183 states and 186496 transitions. Word has length 79 [2024-10-11 03:41:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:16,939 INFO L471 AbstractCegarLoop]: Abstraction has 134183 states and 186496 transitions. [2024-10-11 03:41:16,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 134183 states and 186496 transitions. [2024-10-11 03:41:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:16,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:16,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:16,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 03:41:16,947 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:16,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 663150994, now seen corresponding path program 1 times [2024-10-11 03:41:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115928238] [2024-10-11 03:41:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 03:41:17,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115928238] [2024-10-11 03:41:17,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115928238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:17,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:41:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71922782] [2024-10-11 03:41:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:17,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:41:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:41:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:41:17,078 INFO L87 Difference]: Start difference. First operand 134183 states and 186496 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2024-10-11 03:41:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:18,512 INFO L93 Difference]: Finished difference Result 331806 states and 465670 transitions. [2024-10-11 03:41:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:41:18,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 79 [2024-10-11 03:41:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:18,952 INFO L225 Difference]: With dead ends: 331806 [2024-10-11 03:41:18,953 INFO L226 Difference]: Without dead ends: 272378 [2024-10-11 03:41:19,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 03:41:19,012 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 737 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:19,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1159 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:41:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272378 states. [2024-10-11 03:41:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272378 to 190802. [2024-10-11 03:41:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190802 states, 190801 states have (on average 1.3875398975896354) internal successors, (264744), 190801 states have internal predecessors, (264744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190802 states to 190802 states and 264744 transitions. [2024-10-11 03:41:22,660 INFO L78 Accepts]: Start accepts. Automaton has 190802 states and 264744 transitions. Word has length 79 [2024-10-11 03:41:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:22,660 INFO L471 AbstractCegarLoop]: Abstraction has 190802 states and 264744 transitions. [2024-10-11 03:41:22,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2024-10-11 03:41:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 190802 states and 264744 transitions. [2024-10-11 03:41:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:22,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:22,675 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:22,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 03:41:22,676 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:22,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1442337281, now seen corresponding path program 1 times [2024-10-11 03:41:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:22,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222455108] [2024-10-11 03:41:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:41:22,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222455108] [2024-10-11 03:41:22,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222455108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:22,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:22,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:41:22,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515202330] [2024-10-11 03:41:22,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:22,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:41:22,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:41:22,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:22,833 INFO L87 Difference]: Start difference. First operand 190802 states and 264744 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:24,656 INFO L93 Difference]: Finished difference Result 445736 states and 618640 transitions. [2024-10-11 03:41:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:41:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 03:41:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:25,273 INFO L225 Difference]: With dead ends: 445736 [2024-10-11 03:41:25,274 INFO L226 Difference]: Without dead ends: 271204 [2024-10-11 03:41:25,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:41:25,441 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 88 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:25,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 322 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:41:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271204 states. [2024-10-11 03:41:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271204 to 259362. [2024-10-11 03:41:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259362 states, 259361 states have (on average 1.375480507863557) internal successors, (356746), 259361 states have internal predecessors, (356746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259362 states to 259362 states and 356746 transitions. [2024-10-11 03:41:29,992 INFO L78 Accepts]: Start accepts. Automaton has 259362 states and 356746 transitions. Word has length 79 [2024-10-11 03:41:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:29,992 INFO L471 AbstractCegarLoop]: Abstraction has 259362 states and 356746 transitions. [2024-10-11 03:41:29,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 259362 states and 356746 transitions. [2024-10-11 03:41:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:30,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:30,001 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:30,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 03:41:30,001 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:30,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1953488543, now seen corresponding path program 1 times [2024-10-11 03:41:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340780213] [2024-10-11 03:41:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:30,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 03:41:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:30,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340780213] [2024-10-11 03:41:30,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340780213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:30,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:30,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:41:30,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577106127] [2024-10-11 03:41:30,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:30,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:41:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:41:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:41:30,123 INFO L87 Difference]: Start difference. First operand 259362 states and 356746 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:32,214 INFO L93 Difference]: Finished difference Result 506441 states and 703468 transitions. [2024-10-11 03:41:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:41:32,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 03:41:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:32,980 INFO L225 Difference]: With dead ends: 506441 [2024-10-11 03:41:32,980 INFO L226 Difference]: Without dead ends: 437508 [2024-10-11 03:41:33,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 03:41:33,095 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 773 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:33,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1001 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:41:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437508 states. [2024-10-11 03:41:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437508 to 315245. [2024-10-11 03:41:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315245 states, 315244 states have (on average 1.3756201545469542) internal successors, (433656), 315244 states have internal predecessors, (433656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315245 states to 315245 states and 433656 transitions. [2024-10-11 03:41:38,964 INFO L78 Accepts]: Start accepts. Automaton has 315245 states and 433656 transitions. Word has length 79 [2024-10-11 03:41:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:41:38,964 INFO L471 AbstractCegarLoop]: Abstraction has 315245 states and 433656 transitions. [2024-10-11 03:41:38,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 315245 states and 433656 transitions. [2024-10-11 03:41:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 03:41:38,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:41:38,995 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:41:38,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 03:41:38,995 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:41:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:41:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1314733110, now seen corresponding path program 1 times [2024-10-11 03:41:38,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:41:38,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962497920] [2024-10-11 03:41:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:41:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:41:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:41:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 03:41:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:41:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962497920] [2024-10-11 03:41:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962497920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:41:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:41:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:41:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628099030] [2024-10-11 03:41:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:41:39,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:41:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:41:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:41:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:41:39,237 INFO L87 Difference]: Start difference. First operand 315245 states and 433656 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:41:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:41:41,689 INFO L93 Difference]: Finished difference Result 527982 states and 731630 transitions. [2024-10-11 03:41:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:41:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 79 [2024-10-11 03:41:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:41:42,461 INFO L225 Difference]: With dead ends: 527982 [2024-10-11 03:41:42,461 INFO L226 Difference]: Without dead ends: 481904 [2024-10-11 03:41:42,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 03:41:42,548 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 752 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:41:42,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1046 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:41:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481904 states.