./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ec94212d42d56ec4ec8ccfb1876cba582c3e983611a6a88d38f3b3edc8b85b6 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:48:14,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:48:14,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:48:14,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:48:14,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:48:14,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:48:14,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:48:14,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:48:14,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:48:14,825 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:48:14,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:48:14,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:48:14,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:48:14,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:48:14,828 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:48:14,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:48:14,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:48:14,828 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:48:14,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:48:14,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:48:14,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:48:14,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:48:14,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:48:14,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:48:14,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:48:14,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:48:14,830 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:48:14,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:48:14,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:48:14,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:48:14,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:48:14,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:48:14,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:48:14,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:48:14,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:48:14,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:48:14,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:48:14,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:48:14,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:48:14,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:48:14,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:48:14,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:48:14,834 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ec94212d42d56ec4ec8ccfb1876cba582c3e983611a6a88d38f3b3edc8b85b6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:48:15,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:48:15,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:48:15,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:48:15,088 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:48:15,088 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:48:15,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-11-22 23:48:16,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:48:16,375 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:48:16,376 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-11-22 23:48:16,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1175903b5/1cd3ba6c2c2a46c5a32186c34f7ed140/FLAG9ce02b40e [2023-11-22 23:48:16,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1175903b5/1cd3ba6c2c2a46c5a32186c34f7ed140 [2023-11-22 23:48:16,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:48:16,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:48:16,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:48:16,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:48:16,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:48:16,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14de1eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16, skipping insertion in model container [2023-11-22 23:48:16,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:48:16,643 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2023-11-22 23:48:16,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:48:16,654 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:48:16,690 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2023-11-22 23:48:16,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:48:16,702 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:48:16,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16 WrapperNode [2023-11-22 23:48:16,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:48:16,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:48:16,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:48:16,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:48:16,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,743 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 433 [2023-11-22 23:48:16,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:48:16,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:48:16,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:48:16,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:48:16,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:48:16,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:48:16,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:48:16,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:48:16,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (1/1) ... [2023-11-22 23:48:16,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:48:16,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:48:16,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:48:16,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:48:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:48:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:48:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:48:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:48:17,005 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:48:17,007 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:48:17,330 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:48:17,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:48:17,357 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 23:48:17,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:48:17 BoogieIcfgContainer [2023-11-22 23:48:17,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:48:17,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:48:17,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:48:17,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:48:17,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:48:16" (1/3) ... [2023-11-22 23:48:17,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fbed8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:48:17, skipping insertion in model container [2023-11-22 23:48:17,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:48:16" (2/3) ... [2023-11-22 23:48:17,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fbed8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:48:17, skipping insertion in model container [2023-11-22 23:48:17,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:48:17" (3/3) ... [2023-11-22 23:48:17,364 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-11-22 23:48:17,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:48:17,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:48:17,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:48:17,540 INFO L357 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, mHoare=true, 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;@4c255a74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:48:17,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:48:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.7946428571428572) internal successors, (201), 113 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 23:48:17,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:17,553 INFO L195 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] [2023-11-22 23:48:17,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:17,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1320925119, now seen corresponding path program 1 times [2023-11-22 23:48:17,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:17,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843452119] [2023-11-22 23:48:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:17,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:17,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843452119] [2023-11-22 23:48:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843452119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:17,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:17,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 23:48:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083274262] [2023-11-22 23:48:17,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:17,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 23:48:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 23:48:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:48:17,861 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.7946428571428572) internal successors, (201), 113 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:17,901 INFO L93 Difference]: Finished difference Result 178 states and 313 transitions. [2023-11-22 23:48:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 23:48:17,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-22 23:48:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:17,911 INFO L225 Difference]: With dead ends: 178 [2023-11-22 23:48:17,912 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 23:48:17,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:48:17,916 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:17,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 23:48:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-22 23:48:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7657657657657657) internal successors, (196), 111 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 196 transitions. [2023-11-22 23:48:17,954 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 196 transitions. Word has length 34 [2023-11-22 23:48:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:17,954 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 196 transitions. [2023-11-22 23:48:17,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 196 transitions. [2023-11-22 23:48:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 23:48:17,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:17,956 INFO L195 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] [2023-11-22 23:48:17,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:48:17,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:17,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1285098435, now seen corresponding path program 1 times [2023-11-22 23:48:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:17,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659270668] [2023-11-22 23:48:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:18,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659270668] [2023-11-22 23:48:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659270668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:18,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:48:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306553440] [2023-11-22 23:48:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:48:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:48:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:18,241 INFO L87 Difference]: Start difference. First operand 112 states and 196 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:18,296 INFO L93 Difference]: Finished difference Result 178 states and 307 transitions. [2023-11-22 23:48:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:48:18,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-22 23:48:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:18,297 INFO L225 Difference]: With dead ends: 178 [2023-11-22 23:48:18,297 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 23:48:18,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:18,301 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:18,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 555 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 23:48:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-22 23:48:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5765765765765767) internal successors, (175), 111 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 175 transitions. [2023-11-22 23:48:18,314 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 175 transitions. Word has length 34 [2023-11-22 23:48:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:18,315 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 175 transitions. [2023-11-22 23:48:18,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 175 transitions. [2023-11-22 23:48:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-22 23:48:18,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:18,317 INFO L195 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] [2023-11-22 23:48:18,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:48:18,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:18,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1491954151, now seen corresponding path program 1 times [2023-11-22 23:48:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:18,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488623888] [2023-11-22 23:48:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488623888] [2023-11-22 23:48:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488623888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:18,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:18,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758580375] [2023-11-22 23:48:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:18,419 INFO L87 Difference]: Start difference. First operand 112 states and 175 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2023-11-22 23:48:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:18,465 INFO L93 Difference]: Finished difference Result 229 states and 374 transitions. [2023-11-22 23:48:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:18,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 [2023-11-22 23:48:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:18,470 INFO L225 Difference]: With dead ends: 229 [2023-11-22 23:48:18,470 INFO L226 Difference]: Without dead ends: 166 [2023-11-22 23:48:18,473 INFO L412 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 [2023-11-22 23:48:18,476 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 82 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:18,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 305 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-22 23:48:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2023-11-22 23:48:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5925925925925926) internal successors, (258), 162 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) [2023-11-22 23:48:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 258 transitions. [2023-11-22 23:48:18,492 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 258 transitions. Word has length 54 [2023-11-22 23:48:18,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:18,493 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 258 transitions. [2023-11-22 23:48:18,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2023-11-22 23:48:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 258 transitions. [2023-11-22 23:48:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-22 23:48:18,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:18,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:48:18,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:18,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2133310945, now seen corresponding path program 1 times [2023-11-22 23:48:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144131584] [2023-11-22 23:48:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144131584] [2023-11-22 23:48:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144131584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:18,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:18,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560695764] [2023-11-22 23:48:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:18,646 INFO L87 Difference]: Start difference. First operand 163 states and 258 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:18,676 INFO L93 Difference]: Finished difference Result 377 states and 614 transitions. [2023-11-22 23:48:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-11-22 23:48:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:18,677 INFO L225 Difference]: With dead ends: 377 [2023-11-22 23:48:18,677 INFO L226 Difference]: Without dead ends: 263 [2023-11-22 23:48:18,678 INFO L412 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 [2023-11-22 23:48:18,678 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 84 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:18,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 318 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-22 23:48:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2023-11-22 23:48:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.6124031007751938) internal successors, (416), 258 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 416 transitions. [2023-11-22 23:48:18,705 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 416 transitions. Word has length 56 [2023-11-22 23:48:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:18,706 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 416 transitions. [2023-11-22 23:48:18,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 416 transitions. [2023-11-22 23:48:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 23:48:18,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:18,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:18,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:48:18,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:18,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1393501239, now seen corresponding path program 1 times [2023-11-22 23:48:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659460731] [2023-11-22 23:48:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:18,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:18,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659460731] [2023-11-22 23:48:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659460731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:18,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:18,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298787410] [2023-11-22 23:48:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:18,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:18,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:18,797 INFO L87 Difference]: Start difference. First operand 259 states and 416 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:18,818 INFO L93 Difference]: Finished difference Result 651 states and 1062 transitions. [2023-11-22 23:48:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:18,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-22 23:48:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:18,822 INFO L225 Difference]: With dead ends: 651 [2023-11-22 23:48:18,822 INFO L226 Difference]: Without dead ends: 441 [2023-11-22 23:48:18,824 INFO L412 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 [2023-11-22 23:48:18,825 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 78 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:18,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 319 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:18,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-22 23:48:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 435. [2023-11-22 23:48:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.6129032258064515) internal successors, (700), 434 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 700 transitions. [2023-11-22 23:48:18,840 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 700 transitions. Word has length 58 [2023-11-22 23:48:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:18,840 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 700 transitions. [2023-11-22 23:48:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 700 transitions. [2023-11-22 23:48:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 23:48:18,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:18,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:18,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 23:48:18,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:18,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash -691140561, now seen corresponding path program 1 times [2023-11-22 23:48:18,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13073429] [2023-11-22 23:48:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:18,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:18,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:18,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13073429] [2023-11-22 23:48:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13073429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:18,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:18,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:48:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410623542] [2023-11-22 23:48:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:18,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:48:18,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:48:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:48:18,956 INFO L87 Difference]: Start difference. First operand 435 states and 700 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:19,070 INFO L93 Difference]: Finished difference Result 1863 states and 3090 transitions. [2023-11-22 23:48:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:48:19,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-22 23:48:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:19,075 INFO L225 Difference]: With dead ends: 1863 [2023-11-22 23:48:19,075 INFO L226 Difference]: Without dead ends: 1477 [2023-11-22 23:48:19,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:48:19,076 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 695 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:19,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 983 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:48:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2023-11-22 23:48:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 772. [2023-11-22 23:48:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.6264591439688716) internal successors, (1254), 771 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1254 transitions. [2023-11-22 23:48:19,095 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1254 transitions. Word has length 60 [2023-11-22 23:48:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:19,095 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1254 transitions. [2023-11-22 23:48:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1254 transitions. [2023-11-22 23:48:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-22 23:48:19,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:19,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:19,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 23:48:19,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:19,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash -13242013, now seen corresponding path program 1 times [2023-11-22 23:48:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471151531] [2023-11-22 23:48:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:19,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471151531] [2023-11-22 23:48:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471151531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:48:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202327636] [2023-11-22 23:48:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:19,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:48:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:48:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:19,193 INFO L87 Difference]: Start difference. First operand 772 states and 1254 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:19,268 INFO L93 Difference]: Finished difference Result 2257 states and 3733 transitions. [2023-11-22 23:48:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:48:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-11-22 23:48:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:19,275 INFO L225 Difference]: With dead ends: 2257 [2023-11-22 23:48:19,275 INFO L226 Difference]: Without dead ends: 1534 [2023-11-22 23:48:19,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:48:19,279 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 305 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 560 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-11-22 23:48:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1144. [2023-11-22 23:48:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.636920384951881) internal successors, (1871), 1143 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1871 transitions. [2023-11-22 23:48:19,309 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1871 transitions. Word has length 61 [2023-11-22 23:48:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1871 transitions. [2023-11-22 23:48:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1871 transitions. [2023-11-22 23:48:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-22 23:48:19,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:19,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 23:48:19,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:19,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash -467771752, now seen corresponding path program 1 times [2023-11-22 23:48:19,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732529165] [2023-11-22 23:48:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:19,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732529165] [2023-11-22 23:48:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732529165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:48:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531298272] [2023-11-22 23:48:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:48:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:48:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:19,399 INFO L87 Difference]: Start difference. First operand 1144 states and 1871 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:19,469 INFO L93 Difference]: Finished difference Result 3325 states and 5491 transitions. [2023-11-22 23:48:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:48:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-22 23:48:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:19,475 INFO L225 Difference]: With dead ends: 3325 [2023-11-22 23:48:19,475 INFO L226 Difference]: Without dead ends: 2230 [2023-11-22 23:48:19,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:48:19,478 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 305 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:19,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 520 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-11-22 23:48:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1675. [2023-11-22 23:48:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.6356033452807646) internal successors, (2738), 1674 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2738 transitions. [2023-11-22 23:48:19,522 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2738 transitions. Word has length 62 [2023-11-22 23:48:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:19,522 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2738 transitions. [2023-11-22 23:48:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2738 transitions. [2023-11-22 23:48:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 23:48:19,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:19,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 23:48:19,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:19,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -883755154, now seen corresponding path program 1 times [2023-11-22 23:48:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8282655] [2023-11-22 23:48:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:19,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:19,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8282655] [2023-11-22 23:48:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8282655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:19,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:19,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192556811] [2023-11-22 23:48:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:19,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:19,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:19,573 INFO L87 Difference]: Start difference. First operand 1675 states and 2738 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:19,606 INFO L93 Difference]: Finished difference Result 3502 states and 5726 transitions. [2023-11-22 23:48:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-22 23:48:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:19,612 INFO L225 Difference]: With dead ends: 3502 [2023-11-22 23:48:19,612 INFO L226 Difference]: Without dead ends: 2520 [2023-11-22 23:48:19,614 INFO L412 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 [2023-11-22 23:48:19,615 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 77 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 363 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 [2023-11-22 23:48:19,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 363 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2023-11-22 23:48:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2518. [2023-11-22 23:48:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 1.6170043702820818) internal successors, (4070), 2517 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4070 transitions. [2023-11-22 23:48:19,661 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4070 transitions. Word has length 63 [2023-11-22 23:48:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:19,662 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4070 transitions. [2023-11-22 23:48:19,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4070 transitions. [2023-11-22 23:48:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 23:48:19,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:19,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:19,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 23:48:19,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:19,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1667840020, now seen corresponding path program 1 times [2023-11-22 23:48:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995297487] [2023-11-22 23:48:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995297487] [2023-11-22 23:48:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995297487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:48:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283953795] [2023-11-22 23:48:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:19,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:48:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:48:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:19,738 INFO L87 Difference]: Start difference. First operand 2518 states and 4070 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:19,837 INFO L93 Difference]: Finished difference Result 7596 states and 12391 transitions. [2023-11-22 23:48:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:48:19,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-22 23:48:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:19,851 INFO L225 Difference]: With dead ends: 7596 [2023-11-22 23:48:19,851 INFO L226 Difference]: Without dead ends: 5238 [2023-11-22 23:48:19,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:48:19,855 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 303 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:19,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 559 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2023-11-22 23:48:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3862. [2023-11-22 23:48:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 1.615125615125615) internal successors, (6236), 3861 states have internal predecessors, (6236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 6236 transitions. [2023-11-22 23:48:19,938 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 6236 transitions. Word has length 63 [2023-11-22 23:48:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:19,938 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 6236 transitions. [2023-11-22 23:48:19,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 6236 transitions. [2023-11-22 23:48:19,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 23:48:19,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:19,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:19,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 23:48:19,939 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:19,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1705470815, now seen corresponding path program 1 times [2023-11-22 23:48:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101329060] [2023-11-22 23:48:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:19,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101329060] [2023-11-22 23:48:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101329060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581333782] [2023-11-22 23:48:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:19,969 INFO L87 Difference]: Start difference. First operand 3862 states and 6236 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:20,031 INFO L93 Difference]: Finished difference Result 8546 states and 13858 transitions. [2023-11-22 23:48:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:20,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-22 23:48:20,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:20,047 INFO L225 Difference]: With dead ends: 8546 [2023-11-22 23:48:20,047 INFO L226 Difference]: Without dead ends: 5803 [2023-11-22 23:48:20,051 INFO L412 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 [2023-11-22 23:48:20,052 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 83 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 385 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 [2023-11-22 23:48:20,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2023-11-22 23:48:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5801. [2023-11-22 23:48:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5800 states have (on average 1.6043103448275862) internal successors, (9305), 5800 states have internal predecessors, (9305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9305 transitions. [2023-11-22 23:48:20,201 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9305 transitions. Word has length 63 [2023-11-22 23:48:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:20,201 INFO L495 AbstractCegarLoop]: Abstraction has 5801 states and 9305 transitions. [2023-11-22 23:48:20,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9305 transitions. [2023-11-22 23:48:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 23:48:20,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:20,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:20,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 23:48:20,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:20,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 710370960, now seen corresponding path program 1 times [2023-11-22 23:48:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:20,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972088284] [2023-11-22 23:48:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972088284] [2023-11-22 23:48:20,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972088284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497765704] [2023-11-22 23:48:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:20,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:20,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:20,248 INFO L87 Difference]: Start difference. First operand 5801 states and 9305 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:20,345 INFO L93 Difference]: Finished difference Result 13147 states and 21344 transitions. [2023-11-22 23:48:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:20,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-22 23:48:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:20,373 INFO L225 Difference]: With dead ends: 13147 [2023-11-22 23:48:20,373 INFO L226 Difference]: Without dead ends: 8868 [2023-11-22 23:48:20,380 INFO L412 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 [2023-11-22 23:48:20,380 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 89 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 400 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 [2023-11-22 23:48:20,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 400 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2023-11-22 23:48:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8866. [2023-11-22 23:48:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 8865 states have (on average 1.5994359842075578) internal successors, (14179), 8865 states have internal predecessors, (14179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 14179 transitions. [2023-11-22 23:48:20,586 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 14179 transitions. Word has length 63 [2023-11-22 23:48:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:20,586 INFO L495 AbstractCegarLoop]: Abstraction has 8866 states and 14179 transitions. [2023-11-22 23:48:20,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 14179 transitions. [2023-11-22 23:48:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-22 23:48:20,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:20,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:20,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 23:48:20,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:20,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2047190676, now seen corresponding path program 1 times [2023-11-22 23:48:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151567856] [2023-11-22 23:48:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:20,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:20,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151567856] [2023-11-22 23:48:20,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151567856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:20,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:20,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:48:20,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340949193] [2023-11-22 23:48:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:20,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:48:20,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:48:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:48:20,699 INFO L87 Difference]: Start difference. First operand 8866 states and 14179 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:20,880 INFO L93 Difference]: Finished difference Result 17671 states and 28274 transitions. [2023-11-22 23:48:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:48:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-22 23:48:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:20,894 INFO L225 Difference]: With dead ends: 17671 [2023-11-22 23:48:20,894 INFO L226 Difference]: Without dead ends: 8868 [2023-11-22 23:48:20,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:48:20,902 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 79 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:20,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 607 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2023-11-22 23:48:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8866. [2023-11-22 23:48:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 8865 states have (on average 1.585335589396503) internal successors, (14054), 8865 states have internal predecessors, (14054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 14054 transitions. [2023-11-22 23:48:21,092 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 14054 transitions. Word has length 65 [2023-11-22 23:48:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:21,093 INFO L495 AbstractCegarLoop]: Abstraction has 8866 states and 14054 transitions. [2023-11-22 23:48:21,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 14054 transitions. [2023-11-22 23:48:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-22 23:48:21,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:21,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 23:48:21,094 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:21,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2143907659, now seen corresponding path program 1 times [2023-11-22 23:48:21,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:21,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728123976] [2023-11-22 23:48:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:21,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728123976] [2023-11-22 23:48:21,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728123976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:21,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:21,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:48:21,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948774433] [2023-11-22 23:48:21,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:48:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:48:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:48:21,210 INFO L87 Difference]: Start difference. First operand 8866 states and 14054 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:21,416 INFO L93 Difference]: Finished difference Result 25421 states and 40446 transitions. [2023-11-22 23:48:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:48:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-22 23:48:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:21,504 INFO L225 Difference]: With dead ends: 25421 [2023-11-22 23:48:21,504 INFO L226 Difference]: Without dead ends: 16618 [2023-11-22 23:48:21,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:48:21,511 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 229 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:21,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 465 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2023-11-22 23:48:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 16616. [2023-11-22 23:48:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16616 states, 16615 states have (on average 1.57008727053867) internal successors, (26087), 16615 states have internal predecessors, (26087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16616 states to 16616 states and 26087 transitions. [2023-11-22 23:48:21,847 INFO L78 Accepts]: Start accepts. Automaton has 16616 states and 26087 transitions. Word has length 68 [2023-11-22 23:48:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:21,847 INFO L495 AbstractCegarLoop]: Abstraction has 16616 states and 26087 transitions. [2023-11-22 23:48:21,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 16616 states and 26087 transitions. [2023-11-22 23:48:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-22 23:48:21,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:21,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:21,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 23:48:21,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:21,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:21,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2051147253, now seen corresponding path program 1 times [2023-11-22 23:48:21,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:21,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445619879] [2023-11-22 23:48:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:21,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445619879] [2023-11-22 23:48:22,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445619879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:22,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:22,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:48:22,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122264591] [2023-11-22 23:48:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:22,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:48:22,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:48:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:22,002 INFO L87 Difference]: Start difference. First operand 16616 states and 26087 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:22,142 INFO L93 Difference]: Finished difference Result 17704 states and 27536 transitions. [2023-11-22 23:48:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:48:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-22 23:48:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:22,168 INFO L225 Difference]: With dead ends: 17704 [2023-11-22 23:48:22,168 INFO L226 Difference]: Without dead ends: 17702 [2023-11-22 23:48:22,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:48:22,176 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:22,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 500 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17702 states. [2023-11-22 23:48:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17702 to 17340. [2023-11-22 23:48:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17340 states, 17339 states have (on average 1.545763884883788) internal successors, (26802), 17339 states have internal predecessors, (26802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17340 states to 17340 states and 26802 transitions. [2023-11-22 23:48:22,537 INFO L78 Accepts]: Start accepts. Automaton has 17340 states and 26802 transitions. Word has length 69 [2023-11-22 23:48:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:22,537 INFO L495 AbstractCegarLoop]: Abstraction has 17340 states and 26802 transitions. [2023-11-22 23:48:22,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17340 states and 26802 transitions. [2023-11-22 23:48:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:48:22,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:22,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:22,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 23:48:22,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:22,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash -180411799, now seen corresponding path program 1 times [2023-11-22 23:48:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:22,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64584009] [2023-11-22 23:48:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:22,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 23:48:22,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:22,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64584009] [2023-11-22 23:48:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64584009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:22,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:22,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:22,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65201558] [2023-11-22 23:48:22,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:22,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:22,601 INFO L87 Difference]: Start difference. First operand 17340 states and 26802 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:23,024 INFO L93 Difference]: Finished difference Result 51777 states and 79958 transitions. [2023-11-22 23:48:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:23,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 23:48:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:23,076 INFO L225 Difference]: With dead ends: 51777 [2023-11-22 23:48:23,076 INFO L226 Difference]: Without dead ends: 34491 [2023-11-22 23:48:23,094 INFO L412 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 [2023-11-22 23:48:23,094 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 110 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:23,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 389 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34491 states. [2023-11-22 23:48:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34491 to 34489. [2023-11-22 23:48:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34489 states, 34488 states have (on average 1.5312282533054975) internal successors, (52809), 34488 states have internal predecessors, (52809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34489 states to 34489 states and 52809 transitions. [2023-11-22 23:48:23,791 INFO L78 Accepts]: Start accepts. Automaton has 34489 states and 52809 transitions. Word has length 95 [2023-11-22 23:48:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:23,791 INFO L495 AbstractCegarLoop]: Abstraction has 34489 states and 52809 transitions. [2023-11-22 23:48:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 34489 states and 52809 transitions. [2023-11-22 23:48:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:48:23,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:23,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 23:48:23,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:23,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1886153126, now seen corresponding path program 1 times [2023-11-22 23:48:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:23,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412760053] [2023-11-22 23:48:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:48:23,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412760053] [2023-11-22 23:48:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412760053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:23,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:23,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257105058] [2023-11-22 23:48:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:23,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:23,860 INFO L87 Difference]: Start difference. First operand 34489 states and 52809 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:24,689 INFO L93 Difference]: Finished difference Result 102999 states and 157563 transitions. [2023-11-22 23:48:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:24,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 23:48:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:24,817 INFO L225 Difference]: With dead ends: 102999 [2023-11-22 23:48:24,817 INFO L226 Difference]: Without dead ends: 68600 [2023-11-22 23:48:24,851 INFO L412 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 [2023-11-22 23:48:24,852 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 96 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:24,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 374 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68600 states. [2023-11-22 23:48:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68600 to 68598. [2023-11-22 23:48:26,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68598 states, 68597 states have (on average 1.5165240462410892) internal successors, (104029), 68597 states have internal predecessors, (104029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68598 states to 68598 states and 104029 transitions. [2023-11-22 23:48:26,237 INFO L78 Accepts]: Start accepts. Automaton has 68598 states and 104029 transitions. Word has length 95 [2023-11-22 23:48:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:26,237 INFO L495 AbstractCegarLoop]: Abstraction has 68598 states and 104029 transitions. [2023-11-22 23:48:26,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 68598 states and 104029 transitions. [2023-11-22 23:48:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:48:26,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:26,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 23:48:26,241 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:26,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1413714315, now seen corresponding path program 1 times [2023-11-22 23:48:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:26,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929730002] [2023-11-22 23:48:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:26,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:26,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929730002] [2023-11-22 23:48:26,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929730002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:26,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:26,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:26,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867885637] [2023-11-22 23:48:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:26,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:26,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:26,415 INFO L87 Difference]: Start difference. First operand 68598 states and 104029 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:27,712 INFO L93 Difference]: Finished difference Result 204906 states and 310457 transitions. [2023-11-22 23:48:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 23:48:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:27,954 INFO L225 Difference]: With dead ends: 204906 [2023-11-22 23:48:27,954 INFO L226 Difference]: Without dead ends: 136480 [2023-11-22 23:48:28,023 INFO L412 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 [2023-11-22 23:48:28,025 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 111 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:28,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 388 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136480 states. [2023-11-22 23:48:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136480 to 136478. [2023-11-22 23:48:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136478 states, 136477 states have (on average 1.5017255654798978) internal successors, (204951), 136477 states have internal predecessors, (204951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136478 states to 136478 states and 204951 transitions. [2023-11-22 23:48:30,865 INFO L78 Accepts]: Start accepts. Automaton has 136478 states and 204951 transitions. Word has length 95 [2023-11-22 23:48:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:30,866 INFO L495 AbstractCegarLoop]: Abstraction has 136478 states and 204951 transitions. [2023-11-22 23:48:30,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 136478 states and 204951 transitions. [2023-11-22 23:48:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:48:30,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:30,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:30,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 23:48:30,873 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:30,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1398195597, now seen corresponding path program 1 times [2023-11-22 23:48:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:30,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661886911] [2023-11-22 23:48:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:30,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661886911] [2023-11-22 23:48:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661886911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:30,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:30,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187126751] [2023-11-22 23:48:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:30,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:30,915 INFO L87 Difference]: Start difference. First operand 136478 states and 204951 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:34,031 INFO L93 Difference]: Finished difference Result 407686 states and 611662 transitions. [2023-11-22 23:48:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:34,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 23:48:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:34,880 INFO L225 Difference]: With dead ends: 407686 [2023-11-22 23:48:34,880 INFO L226 Difference]: Without dead ends: 271560 [2023-11-22 23:48:34,945 INFO L412 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 [2023-11-22 23:48:34,946 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 130 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:34,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 405 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271560 states. [2023-11-22 23:48:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271560 to 271558. [2023-11-22 23:48:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271558 states, 271557 states have (on average 1.4868333351745675) internal successors, (403760), 271557 states have internal predecessors, (403760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271558 states to 271558 states and 403760 transitions. [2023-11-22 23:48:40,884 INFO L78 Accepts]: Start accepts. Automaton has 271558 states and 403760 transitions. Word has length 95 [2023-11-22 23:48:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:40,884 INFO L495 AbstractCegarLoop]: Abstraction has 271558 states and 403760 transitions. [2023-11-22 23:48:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 271558 states and 403760 transitions. [2023-11-22 23:48:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:48:40,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:40,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:40,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 23:48:40,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:40,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash 500802319, now seen corresponding path program 1 times [2023-11-22 23:48:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780531902] [2023-11-22 23:48:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:40,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780531902] [2023-11-22 23:48:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780531902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:40,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:40,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200880456] [2023-11-22 23:48:40,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:40,955 INFO L87 Difference]: Start difference. First operand 271558 states and 403760 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:44,201 INFO L93 Difference]: Finished difference Result 408014 states and 605322 transitions. [2023-11-22 23:48:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:44,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 23:48:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:44,778 INFO L225 Difference]: With dead ends: 408014 [2023-11-22 23:48:44,779 INFO L226 Difference]: Without dead ends: 271856 [2023-11-22 23:48:44,873 INFO L412 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 [2023-11-22 23:48:44,876 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 101 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:44,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 442 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271856 states. [2023-11-22 23:48:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271856 to 271854. [2023-11-22 23:48:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271854 states, 271853 states have (on average 1.474046635497861) internal successors, (400724), 271853 states have internal predecessors, (400724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271854 states to 271854 states and 400724 transitions. [2023-11-22 23:48:50,495 INFO L78 Accepts]: Start accepts. Automaton has 271854 states and 400724 transitions. Word has length 95 [2023-11-22 23:48:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:48:50,495 INFO L495 AbstractCegarLoop]: Abstraction has 271854 states and 400724 transitions. [2023-11-22 23:48:50,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 271854 states and 400724 transitions. [2023-11-22 23:48:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:48:50,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:48:50,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:48:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 23:48:50,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:48:50,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:48:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -510314931, now seen corresponding path program 1 times [2023-11-22 23:48:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:48:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196951073] [2023-11-22 23:48:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:48:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:48:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:48:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:48:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:48:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196951073] [2023-11-22 23:48:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196951073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:48:50,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:48:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:48:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379766561] [2023-11-22 23:48:50,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:48:50,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:48:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:48:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:48:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:48:50,548 INFO L87 Difference]: Start difference. First operand 271854 states and 400724 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:48:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:48:54,231 INFO L93 Difference]: Finished difference Result 408486 states and 600809 transitions. [2023-11-22 23:48:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:48:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-22 23:48:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:48:54,740 INFO L225 Difference]: With dead ends: 408486 [2023-11-22 23:48:54,740 INFO L226 Difference]: Without dead ends: 272360 [2023-11-22 23:48:54,842 INFO L412 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 [2023-11-22 23:48:54,847 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 115 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:48:54,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 460 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:48:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272360 states.