./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c --full-output --preprocessor.use.memory.slicer true --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.3.2.ufo.BOUNDED-6.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 708f088db085ec098a8544d76f8abbece9dbe61a183e0bc1703749c9af891b6b --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:26:09,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:26:09,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:26:09,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:26:09,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:26:09,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:26:09,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:26:09,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:26:09,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:26:09,677 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:26:09,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:26:09,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:26:09,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:26:09,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:26:09,679 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:26:09,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:26:09,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:26:09,680 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:26:09,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:26:09,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:26:09,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:26:09,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:26:09,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:26:09,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:26:09,682 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:26:09,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:26:09,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:26:09,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:26:09,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:26:09,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:26:09,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:26:09,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:26:09,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:26:09,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:26:09,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:26:09,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:26:09,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:26:09,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:26:09,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:26:09,687 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:26:09,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:26:09,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:26:09,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 708f088db085ec098a8544d76f8abbece9dbe61a183e0bc1703749c9af891b6b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:26:09,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:26:09,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:26:09,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:26:09,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:26:09,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:26:09,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2023-11-22 22:26:11,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:26:11,324 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:26:11,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2023-11-22 22:26:11,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61331172d/f501c2c66c864f13b60b31c2d445dd0a/FLAGf807f4547 [2023-11-22 22:26:11,350 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61331172d/f501c2c66c864f13b60b31c2d445dd0a [2023-11-22 22:26:11,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:26:11,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:26:11,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:26:11,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:26:11,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:26:11,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc6cbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11, skipping insertion in model container [2023-11-22 22:26:11,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,407 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:26:11,628 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.3.2.ufo.BOUNDED-6.pals.c[12764,12777] [2023-11-22 22:26:11,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:26:11,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:26:11,686 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.3.2.ufo.BOUNDED-6.pals.c[12764,12777] [2023-11-22 22:26:11,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:26:11,706 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:26:11,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11 WrapperNode [2023-11-22 22:26:11,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:26:11,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:26:11,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:26:11,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:26:11,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,764 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2023-11-22 22:26:11,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:26:11,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:26:11,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:26:11,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:26:11,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,786 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,804 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 22:26:11,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,811 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:26:11,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:26:11,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:26:11,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:26:11,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (1/1) ... [2023-11-22 22:26:11,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:26:11,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:26:11,892 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 22:26:11,916 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 22:26:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:26:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:26:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:26:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:26:12,064 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:26:12,066 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:26:12,647 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:26:12,700 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:26:12,700 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 22:26:12,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:26:12 BoogieIcfgContainer [2023-11-22 22:26:12,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:26:12,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:26:12,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:26:12,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:26:12,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:26:11" (1/3) ... [2023-11-22 22:26:12,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51eae747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:26:12, skipping insertion in model container [2023-11-22 22:26:12,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:26:11" (2/3) ... [2023-11-22 22:26:12,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51eae747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:26:12, skipping insertion in model container [2023-11-22 22:26:12,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:26:12" (3/3) ... [2023-11-22 22:26:12,711 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2023-11-22 22:26:12,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:26:12,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:26:12,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:26:12,767 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;@4c24f2ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:26:12,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:26:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 22:26:12,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:12,780 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 22:26:12,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:12,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1477667755, now seen corresponding path program 1 times [2023-11-22 22:26:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764246774] [2023-11-22 22:26:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:13,032 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 22:26:13,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:13,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764246774] [2023-11-22 22:26:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764246774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:26:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930765559] [2023-11-22 22:26:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:13,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:26:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:26:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:26:13,067 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 22:26:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:13,100 INFO L93 Difference]: Finished difference Result 174 states and 308 transitions. [2023-11-22 22:26:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:26:13,102 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 22:26:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:13,113 INFO L225 Difference]: With dead ends: 174 [2023-11-22 22:26:13,114 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 22:26:13,116 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 22:26:13,120 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:13,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 22:26:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-22 22:26:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7927927927927927) internal successors, (199), 111 states have internal predecessors, (199), 0 states have call successors, (0), 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 22:26:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 199 transitions. [2023-11-22 22:26:13,157 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 199 transitions. Word has length 34 [2023-11-22 22:26:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:13,158 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 199 transitions. [2023-11-22 22:26:13,158 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 22:26:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 199 transitions. [2023-11-22 22:26:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-22 22:26:13,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:13,160 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 22:26:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:26:13,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:13,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -211275987, now seen corresponding path program 1 times [2023-11-22 22:26:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556613853] [2023-11-22 22:26:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:13,377 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 22:26:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556613853] [2023-11-22 22:26:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556613853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:13,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498507743] [2023-11-22 22:26:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:13,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:13,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:13,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:13,385 INFO L87 Difference]: Start difference. First operand 112 states and 199 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 22:26:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:13,488 INFO L93 Difference]: Finished difference Result 229 states and 400 transitions. [2023-11-22 22:26:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:13,489 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 22:26:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:13,491 INFO L225 Difference]: With dead ends: 229 [2023-11-22 22:26:13,492 INFO L226 Difference]: Without dead ends: 169 [2023-11-22 22:26:13,493 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 22:26:13,495 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 98 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:13,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 552 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:26:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-22 22:26:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 112. [2023-11-22 22:26:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 111 states have internal predecessors, (172), 0 states have call successors, (0), 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 22:26:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 172 transitions. [2023-11-22 22:26:13,508 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 172 transitions. Word has length 34 [2023-11-22 22:26:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:13,508 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 172 transitions. [2023-11-22 22:26:13,509 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 22:26:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 172 transitions. [2023-11-22 22:26:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 22:26:13,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:13,511 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 22:26:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:26:13,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:13,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash -985754314, now seen corresponding path program 1 times [2023-11-22 22:26:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:13,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457131619] [2023-11-22 22:26:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:13,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:13,676 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 22:26:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:13,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457131619] [2023-11-22 22:26:13,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457131619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:13,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074958055] [2023-11-22 22:26:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:13,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:13,683 INFO L87 Difference]: Start difference. First operand 112 states and 172 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 22:26:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:13,743 INFO L93 Difference]: Finished difference Result 217 states and 353 transitions. [2023-11-22 22:26:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 22:26:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:13,748 INFO L225 Difference]: With dead ends: 217 [2023-11-22 22:26:13,748 INFO L226 Difference]: Without dead ends: 160 [2023-11-22 22:26:13,754 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 22:26:13,757 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:13,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 363 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-22 22:26:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-11-22 22:26:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.5796178343949046) internal successors, (248), 157 states have internal predecessors, (248), 0 states have call successors, (0), 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 22:26:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 248 transitions. [2023-11-22 22:26:13,778 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 248 transitions. Word has length 60 [2023-11-22 22:26:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:13,779 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 248 transitions. [2023-11-22 22:26:13,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 22:26:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 248 transitions. [2023-11-22 22:26:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-22 22:26:13,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:13,786 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 22:26:13,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 22:26:13,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:13,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1305875761, now seen corresponding path program 1 times [2023-11-22 22:26:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:13,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172313455] [2023-11-22 22:26:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:13,893 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 22:26:13,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172313455] [2023-11-22 22:26:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172313455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:13,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503956309] [2023-11-22 22:26:13,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:13,896 INFO L87 Difference]: Start difference. First operand 158 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 22:26:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:13,922 INFO L93 Difference]: Finished difference Result 263 states and 429 transitions. [2023-11-22 22:26:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:13,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 22:26:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:13,924 INFO L225 Difference]: With dead ends: 263 [2023-11-22 22:26:13,925 INFO L226 Difference]: Without dead ends: 206 [2023-11-22 22:26:13,926 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 22:26:13,934 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 83 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 389 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 22:26:13,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-22 22:26:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2023-11-22 22:26:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 203 states have internal predecessors, (327), 0 states have call successors, (0), 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 22:26:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 327 transitions. [2023-11-22 22:26:13,961 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 327 transitions. Word has length 62 [2023-11-22 22:26:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:13,962 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 327 transitions. [2023-11-22 22:26:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 22:26:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 327 transitions. [2023-11-22 22:26:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-22 22:26:13,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:13,964 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 22:26:13,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 22:26:13,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:13,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1944934066, now seen corresponding path program 1 times [2023-11-22 22:26:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650272971] [2023-11-22 22:26:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:14,045 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 22:26:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650272971] [2023-11-22 22:26:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650272971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:14,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546890849] [2023-11-22 22:26:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:14,049 INFO L87 Difference]: Start difference. First operand 204 states and 327 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 22:26:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:14,070 INFO L93 Difference]: Finished difference Result 477 states and 792 transitions. [2023-11-22 22:26:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:14,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 22:26:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:14,074 INFO L225 Difference]: With dead ends: 477 [2023-11-22 22:26:14,074 INFO L226 Difference]: Without dead ends: 330 [2023-11-22 22:26:14,077 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 22:26:14,077 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 76 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:14,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 376 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-22 22:26:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-11-22 22:26:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6391437308868502) internal successors, (536), 327 states have internal predecessors, (536), 0 states have call successors, (0), 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 22:26:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 536 transitions. [2023-11-22 22:26:14,098 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 536 transitions. Word has length 62 [2023-11-22 22:26:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:14,100 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 536 transitions. [2023-11-22 22:26:14,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 22:26:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 536 transitions. [2023-11-22 22:26:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-22 22:26:14,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:14,103 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] [2023-11-22 22:26:14,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 22:26:14,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:14,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash -386894903, now seen corresponding path program 1 times [2023-11-22 22:26:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942875538] [2023-11-22 22:26:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:14,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:14,204 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 22:26:14,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:14,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942875538] [2023-11-22 22:26:14,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942875538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:14,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:14,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:14,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115923185] [2023-11-22 22:26:14,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:14,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:14,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:14,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:14,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:14,207 INFO L87 Difference]: Start difference. First operand 328 states and 536 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:14,228 INFO L93 Difference]: Finished difference Result 595 states and 989 transitions. [2023-11-22 22:26:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-22 22:26:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:14,231 INFO L225 Difference]: With dead ends: 595 [2023-11-22 22:26:14,231 INFO L226 Difference]: Without dead ends: 448 [2023-11-22 22:26:14,232 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 22:26:14,233 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 381 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 22:26:14,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 381 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-22 22:26:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-11-22 22:26:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.644943820224719) internal successors, (732), 445 states have internal predecessors, (732), 0 states have call successors, (0), 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 22:26:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 732 transitions. [2023-11-22 22:26:14,249 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 732 transitions. Word has length 64 [2023-11-22 22:26:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:14,251 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 732 transitions. [2023-11-22 22:26:14,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 732 transitions. [2023-11-22 22:26:14,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-22 22:26:14,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:14,252 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] [2023-11-22 22:26:14,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 22:26:14,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:14,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash 892182118, now seen corresponding path program 1 times [2023-11-22 22:26:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986357742] [2023-11-22 22:26:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:14,347 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 22:26:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986357742] [2023-11-22 22:26:14,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986357742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:14,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:14,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751655025] [2023-11-22 22:26:14,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:14,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:14,367 INFO L87 Difference]: Start difference. First operand 446 states and 732 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:14,394 INFO L93 Difference]: Finished difference Result 1149 states and 1913 transitions. [2023-11-22 22:26:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-22 22:26:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:14,399 INFO L225 Difference]: With dead ends: 1149 [2023-11-22 22:26:14,399 INFO L226 Difference]: Without dead ends: 766 [2023-11-22 22:26:14,399 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 22:26:14,402 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 70 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:14,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:14,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-22 22:26:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 764. [2023-11-22 22:26:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.6435124508519003) internal successors, (1254), 763 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 22:26:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1254 transitions. [2023-11-22 22:26:14,425 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1254 transitions. Word has length 64 [2023-11-22 22:26:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:14,426 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 1254 transitions. [2023-11-22 22:26:14,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1254 transitions. [2023-11-22 22:26:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-22 22:26:14,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:14,427 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] [2023-11-22 22:26:14,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 22:26:14,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:14,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 539603809, now seen corresponding path program 1 times [2023-11-22 22:26:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:14,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602280646] [2023-11-22 22:26:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:14,511 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 22:26:14,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602280646] [2023-11-22 22:26:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602280646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:14,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:14,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032335563] [2023-11-22 22:26:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:14,514 INFO L87 Difference]: Start difference. First operand 764 states and 1254 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:14,552 INFO L93 Difference]: Finished difference Result 1437 states and 2381 transitions. [2023-11-22 22:26:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:14,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-22 22:26:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:14,556 INFO L225 Difference]: With dead ends: 1437 [2023-11-22 22:26:14,557 INFO L226 Difference]: Without dead ends: 1054 [2023-11-22 22:26:14,557 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 22:26:14,559 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 71 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 373 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 22:26:14,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-11-22 22:26:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2023-11-22 22:26:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.637488106565176) internal successors, (1721), 1051 states have internal predecessors, (1721), 0 states have call successors, (0), 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 22:26:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1721 transitions. [2023-11-22 22:26:14,588 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1721 transitions. Word has length 66 [2023-11-22 22:26:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1721 transitions. [2023-11-22 22:26:14,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1721 transitions. [2023-11-22 22:26:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-22 22:26:14,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:14,590 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] [2023-11-22 22:26:14,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 22:26:14,590 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:14,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1422478210, now seen corresponding path program 1 times [2023-11-22 22:26:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:14,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511528941] [2023-11-22 22:26:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:14,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:14,675 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 22:26:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511528941] [2023-11-22 22:26:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511528941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:14,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:14,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:26:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129947812] [2023-11-22 22:26:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:14,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:26:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:26:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:14,678 INFO L87 Difference]: Start difference. First operand 1052 states and 1721 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:14,872 INFO L93 Difference]: Finished difference Result 5336 states and 8927 transitions. [2023-11-22 22:26:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:26:14,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-22 22:26:14,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:14,889 INFO L225 Difference]: With dead ends: 5336 [2023-11-22 22:26:14,889 INFO L226 Difference]: Without dead ends: 4353 [2023-11-22 22:26:14,891 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 22:26:14,892 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 576 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:14,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1062 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:26:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2023-11-22 22:26:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 1969. [2023-11-22 22:26:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.6346544715447155) internal successors, (3217), 1968 states have internal predecessors, (3217), 0 states have call successors, (0), 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 22:26:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 3217 transitions. [2023-11-22 22:26:14,968 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 3217 transitions. Word has length 66 [2023-11-22 22:26:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:14,969 INFO L495 AbstractCegarLoop]: Abstraction has 1969 states and 3217 transitions. [2023-11-22 22:26:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 3217 transitions. [2023-11-22 22:26:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-22 22:26:14,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:14,970 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] [2023-11-22 22:26:14,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 22:26:14,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:14,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872637, now seen corresponding path program 1 times [2023-11-22 22:26:14,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042299494] [2023-11-22 22:26:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:15,056 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 22:26:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042299494] [2023-11-22 22:26:15,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042299494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:15,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:15,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852936959] [2023-11-22 22:26:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:15,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:15,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:15,059 INFO L87 Difference]: Start difference. First operand 1969 states and 3217 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 22:26:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:15,173 INFO L93 Difference]: Finished difference Result 6431 states and 10655 transitions. [2023-11-22 22:26:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-22 22:26:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:15,190 INFO L225 Difference]: With dead ends: 6431 [2023-11-22 22:26:15,190 INFO L226 Difference]: Without dead ends: 4531 [2023-11-22 22:26:15,195 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 22:26:15,196 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 280 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 542 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 22:26:15,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 542 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2023-11-22 22:26:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 3231. [2023-11-22 22:26:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3230 states have (on average 1.6368421052631579) internal successors, (5287), 3230 states have internal predecessors, (5287), 0 states have call successors, (0), 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 22:26:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 5287 transitions. [2023-11-22 22:26:15,297 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 5287 transitions. Word has length 67 [2023-11-22 22:26:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:15,298 INFO L495 AbstractCegarLoop]: Abstraction has 3231 states and 5287 transitions. [2023-11-22 22:26:15,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 22:26:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 5287 transitions. [2023-11-22 22:26:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-22 22:26:15,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:15,302 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 22:26:15,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 22:26:15,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:15,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1091384583, now seen corresponding path program 1 times [2023-11-22 22:26:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:15,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763486094] [2023-11-22 22:26:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:15,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:15,391 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 22:26:15,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763486094] [2023-11-22 22:26:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763486094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:15,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670544885] [2023-11-22 22:26:15,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:15,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:15,394 INFO L87 Difference]: Start difference. First operand 3231 states and 5287 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 22:26:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:15,564 INFO L93 Difference]: Finished difference Result 10391 states and 17091 transitions. [2023-11-22 22:26:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:15,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 22:26:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:15,591 INFO L225 Difference]: With dead ends: 10391 [2023-11-22 22:26:15,591 INFO L226 Difference]: Without dead ends: 7229 [2023-11-22 22:26:15,597 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 22:26:15,598 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 278 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:15,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 539 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:26:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2023-11-22 22:26:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 5201. [2023-11-22 22:26:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 1.6259615384615385) internal successors, (8455), 5200 states have internal predecessors, (8455), 0 states have call successors, (0), 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 22:26:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 8455 transitions. [2023-11-22 22:26:15,765 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 8455 transitions. Word has length 68 [2023-11-22 22:26:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:15,765 INFO L495 AbstractCegarLoop]: Abstraction has 5201 states and 8455 transitions. [2023-11-22 22:26:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 22:26:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 8455 transitions. [2023-11-22 22:26:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-22 22:26:15,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:15,766 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 22:26:15,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 22:26:15,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:15,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:15,767 INFO L85 PathProgramCache]: Analyzing trace with hash -578633876, now seen corresponding path program 1 times [2023-11-22 22:26:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:15,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671748815] [2023-11-22 22:26:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:15,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:15,889 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 22:26:15,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671748815] [2023-11-22 22:26:15,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671748815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:15,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:15,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13975121] [2023-11-22 22:26:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:15,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:15,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:15,891 INFO L87 Difference]: Start difference. First operand 5201 states and 8455 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 22:26:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:16,123 INFO L93 Difference]: Finished difference Result 16423 states and 26807 transitions. [2023-11-22 22:26:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:16,124 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 22:26:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:16,158 INFO L225 Difference]: With dead ends: 16423 [2023-11-22 22:26:16,158 INFO L226 Difference]: Without dead ends: 11291 [2023-11-22 22:26:16,167 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 22:26:16,168 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 276 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 541 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 22:26:16,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11291 states. [2023-11-22 22:26:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11291 to 8203. [2023-11-22 22:26:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8202 states have (on average 1.6146061936113143) internal successors, (13243), 8202 states have internal predecessors, (13243), 0 states have call successors, (0), 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 22:26:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13243 transitions. [2023-11-22 22:26:16,454 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13243 transitions. Word has length 69 [2023-11-22 22:26:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:16,455 INFO L495 AbstractCegarLoop]: Abstraction has 8203 states and 13243 transitions. [2023-11-22 22:26:16,455 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 22:26:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13243 transitions. [2023-11-22 22:26:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-22 22:26:16,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:16,456 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, 1, 1] [2023-11-22 22:26:16,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 22:26:16,456 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:16,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 802275316, now seen corresponding path program 1 times [2023-11-22 22:26:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:16,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850735969] [2023-11-22 22:26:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:16,638 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 22:26:16,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:16,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850735969] [2023-11-22 22:26:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850735969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:26:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902914296] [2023-11-22 22:26:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:26:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:26:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:16,641 INFO L87 Difference]: Start difference. First operand 8203 states and 13243 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 22:26:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:16,962 INFO L93 Difference]: Finished difference Result 16339 states and 26396 transitions. [2023-11-22 22:26:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:26:16,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-11-22 22:26:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:16,977 INFO L225 Difference]: With dead ends: 16339 [2023-11-22 22:26:16,978 INFO L226 Difference]: Without dead ends: 8205 [2023-11-22 22:26:16,988 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 22:26:16,989 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 70 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:16,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 593 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:26:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2023-11-22 22:26:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8203. [2023-11-22 22:26:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 8202 states have (on average 1.599366008290661) internal successors, (13118), 8202 states have internal predecessors, (13118), 0 states have call successors, (0), 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 22:26:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 13118 transitions. [2023-11-22 22:26:17,195 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 13118 transitions. Word has length 71 [2023-11-22 22:26:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:17,195 INFO L495 AbstractCegarLoop]: Abstraction has 8203 states and 13118 transitions. [2023-11-22 22:26:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 22:26:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 13118 transitions. [2023-11-22 22:26:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 22:26:17,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:17,197 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, 1, 1, 1, 1, 1] [2023-11-22 22:26:17,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 22:26:17,197 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:17,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1920185732, now seen corresponding path program 1 times [2023-11-22 22:26:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:17,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095571029] [2023-11-22 22:26:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:17,379 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 22:26:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095571029] [2023-11-22 22:26:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095571029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:26:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849027736] [2023-11-22 22:26:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:17,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:26:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:26:17,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:26:17,381 INFO L87 Difference]: Start difference. First operand 8203 states and 13118 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:17,641 INFO L93 Difference]: Finished difference Result 23501 states and 37734 transitions. [2023-11-22 22:26:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:26:17,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-22 22:26:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:17,669 INFO L225 Difference]: With dead ends: 23501 [2023-11-22 22:26:17,669 INFO L226 Difference]: Without dead ends: 15367 [2023-11-22 22:26:17,681 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 22:26:17,682 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 135 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:26:17,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 455 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2023-11-22 22:26:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 15365. [2023-11-22 22:26:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15365 states, 15364 states have (on average 1.582725852642541) internal successors, (24317), 15364 states have internal predecessors, (24317), 0 states have call successors, (0), 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 22:26:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 24317 transitions. [2023-11-22 22:26:18,168 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 24317 transitions. Word has length 74 [2023-11-22 22:26:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:18,169 INFO L495 AbstractCegarLoop]: Abstraction has 15365 states and 24317 transitions. [2023-11-22 22:26:18,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:18,169 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 24317 transitions. [2023-11-22 22:26:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-22 22:26:18,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:18,170 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, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:18,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 22:26:18,170 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:18,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -618303701, now seen corresponding path program 1 times [2023-11-22 22:26:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827980431] [2023-11-22 22:26:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:18,364 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 22:26:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827980431] [2023-11-22 22:26:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827980431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:18,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:26:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300943755] [2023-11-22 22:26:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:26:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:26:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:26:18,366 INFO L87 Difference]: Start difference. First operand 15365 states and 24317 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:18,636 INFO L93 Difference]: Finished difference Result 16453 states and 25766 transitions. [2023-11-22 22:26:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:26:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-22 22:26:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:18,663 INFO L225 Difference]: With dead ends: 16453 [2023-11-22 22:26:18,664 INFO L226 Difference]: Without dead ends: 16451 [2023-11-22 22:26:18,669 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 22:26:18,669 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 491 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 22:26:18,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 491 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16451 states. [2023-11-22 22:26:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16451 to 16089. [2023-11-22 22:26:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16089 states, 16088 states have (on average 1.555942317255097) internal successors, (25032), 16088 states have internal predecessors, (25032), 0 states have call successors, (0), 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 22:26:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16089 states to 16089 states and 25032 transitions. [2023-11-22 22:26:19,203 INFO L78 Accepts]: Start accepts. Automaton has 16089 states and 25032 transitions. Word has length 75 [2023-11-22 22:26:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:19,203 INFO L495 AbstractCegarLoop]: Abstraction has 16089 states and 25032 transitions. [2023-11-22 22:26:19,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16089 states and 25032 transitions. [2023-11-22 22:26:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-22 22:26:19,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:19,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 22:26:19,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:19,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2029578417, now seen corresponding path program 1 times [2023-11-22 22:26:19,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366476840] [2023-11-22 22:26:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:26:19,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:19,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366476840] [2023-11-22 22:26:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366476840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:19,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675767848] [2023-11-22 22:26:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:19,265 INFO L87 Difference]: Start difference. First operand 16089 states and 25032 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:19,757 INFO L93 Difference]: Finished difference Result 48009 states and 74629 transitions. [2023-11-22 22:26:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:19,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-22 22:26:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:19,813 INFO L225 Difference]: With dead ends: 48009 [2023-11-22 22:26:19,814 INFO L226 Difference]: Without dead ends: 31985 [2023-11-22 22:26:19,828 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 22:26:19,829 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 399 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 22:26:19,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 399 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31985 states. [2023-11-22 22:26:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31985 to 31983. [2023-11-22 22:26:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31983 states, 31982 states have (on average 1.5403039209555376) internal successors, (49262), 31982 states have internal predecessors, (49262), 0 states have call successors, (0), 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 22:26:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31983 states to 31983 states and 49262 transitions. [2023-11-22 22:26:20,613 INFO L78 Accepts]: Start accepts. Automaton has 31983 states and 49262 transitions. Word has length 99 [2023-11-22 22:26:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:20,613 INFO L495 AbstractCegarLoop]: Abstraction has 31983 states and 49262 transitions. [2023-11-22 22:26:20,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 31983 states and 49262 transitions. [2023-11-22 22:26:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-22 22:26:20,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:20,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:26:20,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 22:26:20,618 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:20,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1881455852, now seen corresponding path program 1 times [2023-11-22 22:26:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:20,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774502277] [2023-11-22 22:26:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:20,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 22:26:20,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:20,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774502277] [2023-11-22 22:26:20,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774502277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:20,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:20,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:20,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979210198] [2023-11-22 22:26:20,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:20,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:20,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:20,691 INFO L87 Difference]: Start difference. First operand 31983 states and 49262 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 22:26:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:21,869 INFO L93 Difference]: Finished difference Result 95477 states and 146924 transitions. [2023-11-22 22:26:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-22 22:26:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:22,003 INFO L225 Difference]: With dead ends: 95477 [2023-11-22 22:26:22,004 INFO L226 Difference]: Without dead ends: 63592 [2023-11-22 22:26:22,036 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 22:26:22,036 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 95 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 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 22:26:22,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 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 22:26:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63592 states. [2023-11-22 22:26:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63592 to 63590. [2023-11-22 22:26:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63590 states, 63589 states have (on average 1.524508955951501) internal successors, (96942), 63589 states have internal predecessors, (96942), 0 states have call successors, (0), 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 22:26:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63590 states to 63590 states and 96942 transitions. [2023-11-22 22:26:23,470 INFO L78 Accepts]: Start accepts. Automaton has 63590 states and 96942 transitions. Word has length 99 [2023-11-22 22:26:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:23,472 INFO L495 AbstractCegarLoop]: Abstraction has 63590 states and 96942 transitions. [2023-11-22 22:26:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 22:26:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 63590 states and 96942 transitions. [2023-11-22 22:26:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-22 22:26:23,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:23,480 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, 1, 1, 1, 1] [2023-11-22 22:26:23,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 22:26:23,480 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:23,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1491540327, now seen corresponding path program 1 times [2023-11-22 22:26:23,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:23,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453763268] [2023-11-22 22:26:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:23,746 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 22:26:23,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:23,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453763268] [2023-11-22 22:26:23,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453763268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:23,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:23,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712273966] [2023-11-22 22:26:23,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:23,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:23,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:23,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:23,749 INFO L87 Difference]: Start difference. First operand 63590 states and 96942 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:25,288 INFO L93 Difference]: Finished difference Result 189890 states and 289215 transitions. [2023-11-22 22:26:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-22 22:26:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:25,560 INFO L225 Difference]: With dead ends: 189890 [2023-11-22 22:26:25,561 INFO L226 Difference]: Without dead ends: 126472 [2023-11-22 22:26:25,630 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 22:26:25,633 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 109 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 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 22:26:25,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 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 22:26:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126472 states. [2023-11-22 22:26:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126472 to 126470. [2023-11-22 22:26:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126470 states, 126469 states have (on average 1.508598945196056) internal successors, (190791), 126469 states have internal predecessors, (190791), 0 states have call successors, (0), 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 22:26:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126470 states to 126470 states and 190791 transitions. [2023-11-22 22:26:28,712 INFO L78 Accepts]: Start accepts. Automaton has 126470 states and 190791 transitions. Word has length 99 [2023-11-22 22:26:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:28,714 INFO L495 AbstractCegarLoop]: Abstraction has 126470 states and 190791 transitions. [2023-11-22 22:26:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:26:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 126470 states and 190791 transitions. [2023-11-22 22:26:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-22 22:26:28,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:28,738 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, 1, 1, 1, 1] [2023-11-22 22:26:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 22:26:28,739 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:28,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash 782589003, now seen corresponding path program 1 times [2023-11-22 22:26:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527931904] [2023-11-22 22:26:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:28,793 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 22:26:28,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527931904] [2023-11-22 22:26:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527931904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:28,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:28,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038653666] [2023-11-22 22:26:28,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:28,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:28,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:28,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:28,797 INFO L87 Difference]: Start difference. First operand 126470 states and 190791 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:31,670 INFO L93 Difference]: Finished difference Result 377614 states and 569134 transitions. [2023-11-22 22:26:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:31,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-22 22:26:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:32,164 INFO L225 Difference]: With dead ends: 377614 [2023-11-22 22:26:32,165 INFO L226 Difference]: Without dead ends: 251544 [2023-11-22 22:26:32,515 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 22:26:32,516 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 129 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 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 22:26:32,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 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 22:26:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251544 states. [2023-11-22 22:26:36,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251544 to 251542. [2023-11-22 22:26:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251542 states, 251541 states have (on average 1.492559861016693) internal successors, (375440), 251541 states have internal predecessors, (375440), 0 states have call successors, (0), 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 22:26:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251542 states to 251542 states and 375440 transitions. [2023-11-22 22:26:38,224 INFO L78 Accepts]: Start accepts. Automaton has 251542 states and 375440 transitions. Word has length 99 [2023-11-22 22:26:38,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:38,224 INFO L495 AbstractCegarLoop]: Abstraction has 251542 states and 375440 transitions. [2023-11-22 22:26:38,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 251542 states and 375440 transitions. [2023-11-22 22:26:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-22 22:26:38,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:38,242 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, 1, 1, 1, 1] [2023-11-22 22:26:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 22:26:38,242 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:38,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1206235725, now seen corresponding path program 1 times [2023-11-22 22:26:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:38,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429501661] [2023-11-22 22:26:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:38,321 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 22:26:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429501661] [2023-11-22 22:26:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429501661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:38,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:38,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198174398] [2023-11-22 22:26:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:38,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:38,325 INFO L87 Difference]: Start difference. First operand 251542 states and 375440 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:41,550 INFO L93 Difference]: Finished difference Result 377990 states and 562842 transitions. [2023-11-22 22:26:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:41,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-22 22:26:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:42,019 INFO L225 Difference]: With dead ends: 377990 [2023-11-22 22:26:42,019 INFO L226 Difference]: Without dead ends: 251888 [2023-11-22 22:26:42,117 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 22:26:42,118 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 100 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 434 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 22:26:42,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251888 states. [2023-11-22 22:26:46,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251888 to 251886. [2023-11-22 22:26:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251886 states, 251885 states have (on average 1.4786589118049904) internal successors, (372452), 251885 states have internal predecessors, (372452), 0 states have call successors, (0), 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 22:26:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251886 states to 251886 states and 372452 transitions. [2023-11-22 22:26:48,125 INFO L78 Accepts]: Start accepts. Automaton has 251886 states and 372452 transitions. Word has length 99 [2023-11-22 22:26:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:26:48,126 INFO L495 AbstractCegarLoop]: Abstraction has 251886 states and 372452 transitions. [2023-11-22 22:26:48,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 251886 states and 372452 transitions. [2023-11-22 22:26:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-22 22:26:48,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:26:48,141 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, 1, 1, 1, 1] [2023-11-22 22:26:48,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 22:26:48,141 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:26:48,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:26:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash 195118475, now seen corresponding path program 1 times [2023-11-22 22:26:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:26:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468194831] [2023-11-22 22:26:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:26:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:26:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:26:48,194 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 22:26:48,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:26:48,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468194831] [2023-11-22 22:26:48,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468194831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:26:48,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:26:48,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:26:48,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233337661] [2023-11-22 22:26:48,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:26:48,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:26:48,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:26:48,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:26:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:26:48,197 INFO L87 Difference]: Start difference. First operand 251886 states and 372452 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:26:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:26:51,862 INFO L93 Difference]: Finished difference Result 378534 states and 558401 transitions. [2023-11-22 22:26:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:26:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-22 22:26:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:26:52,324 INFO L225 Difference]: With dead ends: 378534 [2023-11-22 22:26:52,324 INFO L226 Difference]: Without dead ends: 252464 [2023-11-22 22:26:52,417 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 22:26:52,418 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 114 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 452 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 22:26:52,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:26:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252464 states.