./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.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 a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:27:23,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:27:23,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:27:23,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:27:23,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:27:23,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:27:23,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:27:23,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:27:23,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:27:23,933 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:27:23,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:27:23,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:27:23,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:27:23,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:27:23,934 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:27:23,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:27:23,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:27:23,935 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:27:23,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:27:23,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:27:23,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:27:23,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:27:23,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:27:23,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:27:23,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:27:23,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:27:23,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:27:23,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:27:23,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:27:23,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:27:23,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:27:23,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:27:23,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:27:23,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:27:23,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:27:23,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:27:23,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:27:23,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:27:23,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:27:23,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:27:23,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:27:23,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:27:23,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a [2024-11-22 02:27:24,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:27:24,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:27:24,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:27:24,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:27:24,181 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:27:24,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2024-11-22 02:27:25,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:27:25,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:27:25,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2024-11-22 02:27:25,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2841028/d2bbf769b95442b98304ace39c2ad3b8/FLAGca99ec3ff [2024-11-22 02:27:26,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2841028/d2bbf769b95442b98304ace39c2ad3b8 [2024-11-22 02:27:26,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:27:26,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:27:26,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:27:26,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:27:26,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:27:26,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2b0dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26, skipping insertion in model container [2024-11-22 02:27:26,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:27:26,601 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2024-11-22 02:27:26,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:27:26,619 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:27:26,657 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2024-11-22 02:27:26,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:27:26,678 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:27:26,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26 WrapperNode [2024-11-22 02:27:26,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:27:26,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:27:26,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:27:26,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:27:26,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,724 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 455 [2024-11-22 02:27:26,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:27:26,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:27:26,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:27:26,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:27:26,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,752 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:27:26,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:27:26,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:27:26,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:27:26,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:27:26,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (1/1) ... [2024-11-22 02:27:26,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:27:26,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:27:26,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:27:26,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:27:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:27:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:27:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:27:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:27:26,965 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:27:26,968 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:27:27,359 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-22 02:27:27,359 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:27:27,371 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:27:27,371 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 02:27:27,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:27 BoogieIcfgContainer [2024-11-22 02:27:27,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:27:27,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:27:27,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:27:27,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:27:27,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:26" (1/3) ... [2024-11-22 02:27:27,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1065052a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:27, skipping insertion in model container [2024-11-22 02:27:27,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:26" (2/3) ... [2024-11-22 02:27:27,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1065052a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:27, skipping insertion in model container [2024-11-22 02:27:27,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:27" (3/3) ... [2024-11-22 02:27:27,379 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2024-11-22 02:27:27,393 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:27:27,393 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:27:27,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:27:27,466 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4aabf46e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:27:27,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:27:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 120 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:27:27,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:27,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:27,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:27,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 89596463, now seen corresponding path program 1 times [2024-11-22 02:27:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962411474] [2024-11-22 02:27:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962411474] [2024-11-22 02:27:27,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962411474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:27,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:27,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:27:27,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907959224] [2024-11-22 02:27:27,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:27,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:27:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:27:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:27:27,925 INFO L87 Difference]: Start difference. First operand has 121 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 120 states have internal predecessors, (210), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:28,086 INFO L93 Difference]: Finished difference Result 199 states and 336 transitions. [2024-11-22 02:27:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:27:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-22 02:27:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:28,097 INFO L225 Difference]: With dead ends: 199 [2024-11-22 02:27:28,097 INFO L226 Difference]: Without dead ends: 117 [2024-11-22 02:27:28,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:27:28,104 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:28,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 774 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-22 02:27:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-22 02:27:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.396551724137931) internal successors, (162), 116 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2024-11-22 02:27:28,139 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 37 [2024-11-22 02:27:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:28,141 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2024-11-22 02:27:28,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2024-11-22 02:27:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 02:27:28,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:28,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:28,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:27:28,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:28,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:28,147 INFO L85 PathProgramCache]: Analyzing trace with hash 446628089, now seen corresponding path program 1 times [2024-11-22 02:27:28,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:28,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209072494] [2024-11-22 02:27:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:28,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209072494] [2024-11-22 02:27:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209072494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:28,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:28,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694095384] [2024-11-22 02:27:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:28,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:28,307 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:28,331 INFO L93 Difference]: Finished difference Result 249 states and 378 transitions. [2024-11-22 02:27:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-22 02:27:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:28,334 INFO L225 Difference]: With dead ends: 249 [2024-11-22 02:27:28,334 INFO L226 Difference]: Without dead ends: 179 [2024-11-22 02:27:28,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:28,335 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:28,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-22 02:27:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-11-22 02:27:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4829545454545454) internal successors, (261), 176 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 261 transitions. [2024-11-22 02:27:28,353 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 261 transitions. Word has length 77 [2024-11-22 02:27:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:28,354 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 261 transitions. [2024-11-22 02:27:28,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 261 transitions. [2024-11-22 02:27:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 02:27:28,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:28,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:28,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:27:28,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:28,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1625058746, now seen corresponding path program 1 times [2024-11-22 02:27:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553062468] [2024-11-22 02:27:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:28,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553062468] [2024-11-22 02:27:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553062468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:28,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900598698] [2024-11-22 02:27:28,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:28,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:28,664 INFO L87 Difference]: Start difference. First operand 177 states and 261 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:28,853 INFO L93 Difference]: Finished difference Result 1087 states and 1759 transitions. [2024-11-22 02:27:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:28,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-22 02:27:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:28,859 INFO L225 Difference]: With dead ends: 1087 [2024-11-22 02:27:28,859 INFO L226 Difference]: Without dead ends: 957 [2024-11-22 02:27:28,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:28,863 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 2030 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:28,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 1179 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2024-11-22 02:27:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 305. [2024-11-22 02:27:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.5460526315789473) internal successors, (470), 304 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 470 transitions. [2024-11-22 02:27:28,890 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 470 transitions. Word has length 77 [2024-11-22 02:27:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:28,890 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 470 transitions. [2024-11-22 02:27:28,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 470 transitions. [2024-11-22 02:27:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-22 02:27:28,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:28,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:28,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 02:27:28,893 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:28,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1546109612, now seen corresponding path program 1 times [2024-11-22 02:27:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145885521] [2024-11-22 02:27:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:29,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145885521] [2024-11-22 02:27:29,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145885521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:29,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:29,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:27:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886872161] [2024-11-22 02:27:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:29,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:27:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:27:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:27:29,185 INFO L87 Difference]: Start difference. First operand 305 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:29,204 INFO L93 Difference]: Finished difference Result 319 states and 487 transitions. [2024-11-22 02:27:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:27:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-22 02:27:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:29,206 INFO L225 Difference]: With dead ends: 319 [2024-11-22 02:27:29,208 INFO L226 Difference]: Without dead ends: 317 [2024-11-22 02:27:29,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:27:29,209 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:29,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 628 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-22 02:27:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2024-11-22 02:27:29,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.5253164556962024) internal successors, (482), 316 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 482 transitions. [2024-11-22 02:27:29,229 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 482 transitions. Word has length 78 [2024-11-22 02:27:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:29,230 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 482 transitions. [2024-11-22 02:27:29,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 482 transitions. [2024-11-22 02:27:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 02:27:29,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:29,233 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:29,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:27:29,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:29,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -632178990, now seen corresponding path program 1 times [2024-11-22 02:27:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456080223] [2024-11-22 02:27:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456080223] [2024-11-22 02:27:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456080223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330793637] [2024-11-22 02:27:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:29,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,332 INFO L87 Difference]: Start difference. First operand 317 states and 482 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:29,353 INFO L93 Difference]: Finished difference Result 827 states and 1302 transitions. [2024-11-22 02:27:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-22 02:27:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:29,356 INFO L225 Difference]: With dead ends: 827 [2024-11-22 02:27:29,356 INFO L226 Difference]: Without dead ends: 557 [2024-11-22 02:27:29,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,357 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 76 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:29,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-22 02:27:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2024-11-22 02:27:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.555956678700361) internal successors, (862), 554 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 862 transitions. [2024-11-22 02:27:29,369 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 862 transitions. Word has length 79 [2024-11-22 02:27:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:29,369 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 862 transitions. [2024-11-22 02:27:29,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 862 transitions. [2024-11-22 02:27:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 02:27:29,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:29,375 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:29,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 02:27:29,375 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:29,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1939222481, now seen corresponding path program 1 times [2024-11-22 02:27:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426883193] [2024-11-22 02:27:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:29,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426883193] [2024-11-22 02:27:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426883193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:29,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726685993] [2024-11-22 02:27:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:29,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:29,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,488 INFO L87 Difference]: Start difference. First operand 555 states and 862 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:29,532 INFO L93 Difference]: Finished difference Result 1065 states and 1679 transitions. [2024-11-22 02:27:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:29,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-22 02:27:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:29,536 INFO L225 Difference]: With dead ends: 1065 [2024-11-22 02:27:29,539 INFO L226 Difference]: Without dead ends: 795 [2024-11-22 02:27:29,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,540 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 103 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:29,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 368 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2024-11-22 02:27:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2024-11-22 02:27:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.5631313131313131) internal successors, (1238), 792 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1238 transitions. [2024-11-22 02:27:29,570 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1238 transitions. Word has length 79 [2024-11-22 02:27:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:29,574 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1238 transitions. [2024-11-22 02:27:29,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1238 transitions. [2024-11-22 02:27:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 02:27:29,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:29,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:29,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 02:27:29,575 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:29,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:29,576 INFO L85 PathProgramCache]: Analyzing trace with hash 843177357, now seen corresponding path program 1 times [2024-11-22 02:27:29,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:29,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476647811] [2024-11-22 02:27:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:29,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476647811] [2024-11-22 02:27:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476647811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:29,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:29,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450010600] [2024-11-22 02:27:29,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:29,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,703 INFO L87 Difference]: Start difference. First operand 793 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:29,767 INFO L93 Difference]: Finished difference Result 2185 states and 3448 transitions. [2024-11-22 02:27:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:29,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-22 02:27:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:29,776 INFO L225 Difference]: With dead ends: 2185 [2024-11-22 02:27:29,777 INFO L226 Difference]: Without dead ends: 1441 [2024-11-22 02:27:29,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,782 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 83 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:29,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 326 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2024-11-22 02:27:29,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1439. [2024-11-22 02:27:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 1.5618915159944367) internal successors, (2246), 1438 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2246 transitions. [2024-11-22 02:27:29,821 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2246 transitions. Word has length 80 [2024-11-22 02:27:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:29,821 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 2246 transitions. [2024-11-22 02:27:29,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2246 transitions. [2024-11-22 02:27:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 02:27:29,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:29,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:29,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 02:27:29,823 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:29,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash -957511571, now seen corresponding path program 1 times [2024-11-22 02:27:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859558105] [2024-11-22 02:27:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859558105] [2024-11-22 02:27:29,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859558105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578764761] [2024-11-22 02:27:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:29,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,876 INFO L87 Difference]: Start difference. First operand 1439 states and 2246 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:29,918 INFO L93 Difference]: Finished difference Result 4027 states and 6304 transitions. [2024-11-22 02:27:29,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:29,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-22 02:27:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:29,925 INFO L225 Difference]: With dead ends: 4027 [2024-11-22 02:27:29,925 INFO L226 Difference]: Without dead ends: 2637 [2024-11-22 02:27:29,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:29,927 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 87 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:29,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 339 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2024-11-22 02:27:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2635. [2024-11-22 02:27:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.5497342444950646) internal successors, (4082), 2634 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4082 transitions. [2024-11-22 02:27:29,976 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4082 transitions. Word has length 80 [2024-11-22 02:27:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:29,976 INFO L471 AbstractCegarLoop]: Abstraction has 2635 states and 4082 transitions. [2024-11-22 02:27:29,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4082 transitions. [2024-11-22 02:27:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 02:27:29,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:29,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:29,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 02:27:29,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:29,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1565232685, now seen corresponding path program 1 times [2024-11-22 02:27:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:29,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649695269] [2024-11-22 02:27:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:30,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:30,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649695269] [2024-11-22 02:27:30,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649695269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:30,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:30,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:30,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903983856] [2024-11-22 02:27:30,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:30,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:30,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:30,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:30,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:30,060 INFO L87 Difference]: Start difference. First operand 2635 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:30,122 INFO L93 Difference]: Finished difference Result 7423 states and 11476 transitions. [2024-11-22 02:27:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-22 02:27:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:30,136 INFO L225 Difference]: With dead ends: 7423 [2024-11-22 02:27:30,137 INFO L226 Difference]: Without dead ends: 4837 [2024-11-22 02:27:30,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:30,141 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 95 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:30,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 355 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4837 states. [2024-11-22 02:27:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4837 to 4835. [2024-11-22 02:27:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4834 states have (on average 1.5295821266032272) internal successors, (7394), 4834 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7394 transitions. [2024-11-22 02:27:30,242 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7394 transitions. Word has length 80 [2024-11-22 02:27:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:30,242 INFO L471 AbstractCegarLoop]: Abstraction has 4835 states and 7394 transitions. [2024-11-22 02:27:30,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7394 transitions. [2024-11-22 02:27:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 02:27:30,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:30,243 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:30,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 02:27:30,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:30,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -26351347, now seen corresponding path program 1 times [2024-11-22 02:27:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548091793] [2024-11-22 02:27:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:30,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548091793] [2024-11-22 02:27:30,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548091793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:30,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:30,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497036473] [2024-11-22 02:27:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:30,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:30,292 INFO L87 Difference]: Start difference. First operand 4835 states and 7394 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:30,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:30,452 INFO L93 Difference]: Finished difference Result 13639 states and 20740 transitions. [2024-11-22 02:27:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:30,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-22 02:27:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:30,480 INFO L225 Difference]: With dead ends: 13639 [2024-11-22 02:27:30,480 INFO L226 Difference]: Without dead ends: 8853 [2024-11-22 02:27:30,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:30,487 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 99 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:30,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 368 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2024-11-22 02:27:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2024-11-22 02:27:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8850 states have (on average 1.5025988700564972) internal successors, (13298), 8850 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 13298 transitions. [2024-11-22 02:27:30,754 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 13298 transitions. Word has length 80 [2024-11-22 02:27:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:30,754 INFO L471 AbstractCegarLoop]: Abstraction has 8851 states and 13298 transitions. [2024-11-22 02:27:30,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 13298 transitions. [2024-11-22 02:27:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 02:27:30,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:30,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-22 02:27:30,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 02:27:30,759 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:30,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1785241918, now seen corresponding path program 1 times [2024-11-22 02:27:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:30,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949025435] [2024-11-22 02:27:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:30,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949025435] [2024-11-22 02:27:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949025435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:30,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981756398] [2024-11-22 02:27:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:30,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:30,933 INFO L87 Difference]: Start difference. First operand 8851 states and 13298 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:31,047 INFO L93 Difference]: Finished difference Result 17655 states and 26548 transitions. [2024-11-22 02:27:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-22 02:27:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:31,077 INFO L225 Difference]: With dead ends: 17655 [2024-11-22 02:27:31,081 INFO L226 Difference]: Without dead ends: 8853 [2024-11-22 02:27:31,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,091 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 80 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:31,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2024-11-22 02:27:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2024-11-22 02:27:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8850 states have (on average 1.4917514124293785) internal successors, (13202), 8850 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 13202 transitions. [2024-11-22 02:27:31,270 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 13202 transitions. Word has length 110 [2024-11-22 02:27:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:31,270 INFO L471 AbstractCegarLoop]: Abstraction has 8851 states and 13202 transitions. [2024-11-22 02:27:31,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 13202 transitions. [2024-11-22 02:27:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 02:27:31,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:31,273 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1] [2024-11-22 02:27:31,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 02:27:31,273 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:31,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2076585793, now seen corresponding path program 1 times [2024-11-22 02:27:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144555010] [2024-11-22 02:27:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:31,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:31,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144555010] [2024-11-22 02:27:31,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144555010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:31,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:31,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:31,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637855135] [2024-11-22 02:27:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:31,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:31,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,433 INFO L87 Difference]: Start difference. First operand 8851 states and 13202 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:31,495 INFO L93 Difference]: Finished difference Result 13255 states and 19780 transitions. [2024-11-22 02:27:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-22 02:27:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:31,513 INFO L225 Difference]: With dead ends: 13255 [2024-11-22 02:27:31,513 INFO L226 Difference]: Without dead ends: 4453 [2024-11-22 02:27:31,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,522 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 74 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:31,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 343 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2024-11-22 02:27:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4451. [2024-11-22 02:27:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4450 states have (on average 1.4782022471910112) internal successors, (6578), 4450 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6578 transitions. [2024-11-22 02:27:31,597 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6578 transitions. Word has length 110 [2024-11-22 02:27:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:31,597 INFO L471 AbstractCegarLoop]: Abstraction has 4451 states and 6578 transitions. [2024-11-22 02:27:31,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6578 transitions. [2024-11-22 02:27:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 02:27:31,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:31,600 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:31,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 02:27:31,600 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:31,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1799940288, now seen corresponding path program 1 times [2024-11-22 02:27:31,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:31,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260807031] [2024-11-22 02:27:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:31,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:31,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:31,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260807031] [2024-11-22 02:27:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260807031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:31,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623547499] [2024-11-22 02:27:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:31,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,751 INFO L87 Difference]: Start difference. First operand 4451 states and 6578 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:31,785 INFO L93 Difference]: Finished difference Result 6655 states and 9844 transitions. [2024-11-22 02:27:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-22 02:27:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:31,789 INFO L225 Difference]: With dead ends: 6655 [2024-11-22 02:27:31,789 INFO L226 Difference]: Without dead ends: 2253 [2024-11-22 02:27:31,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,794 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 68 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:31,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 321 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2024-11-22 02:27:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2024-11-22 02:27:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2250 states have (on average 1.4622222222222223) internal successors, (3290), 2250 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3290 transitions. [2024-11-22 02:27:31,831 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3290 transitions. Word has length 110 [2024-11-22 02:27:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:31,831 INFO L471 AbstractCegarLoop]: Abstraction has 2251 states and 3290 transitions. [2024-11-22 02:27:31,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3290 transitions. [2024-11-22 02:27:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 02:27:31,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:31,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:31,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 02:27:31,833 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:31,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003519, now seen corresponding path program 1 times [2024-11-22 02:27:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:31,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249074928] [2024-11-22 02:27:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:31,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:31,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249074928] [2024-11-22 02:27:31,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249074928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:31,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:31,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:31,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758235022] [2024-11-22 02:27:31,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:31,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:31,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:31,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,938 INFO L87 Difference]: Start difference. First operand 2251 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:31,961 INFO L93 Difference]: Finished difference Result 3355 states and 4912 transitions. [2024-11-22 02:27:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-22 02:27:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:31,964 INFO L225 Difference]: With dead ends: 3355 [2024-11-22 02:27:31,964 INFO L226 Difference]: Without dead ends: 1153 [2024-11-22 02:27:31,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:31,966 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 62 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:31,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 302 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-22 02:27:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1151. [2024-11-22 02:27:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.4417391304347826) internal successors, (1658), 1150 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1658 transitions. [2024-11-22 02:27:31,984 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1658 transitions. Word has length 110 [2024-11-22 02:27:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:31,984 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1658 transitions. [2024-11-22 02:27:31,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1658 transitions. [2024-11-22 02:27:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 02:27:31,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:31,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:31,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 02:27:31,985 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:31,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:31,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1396251838, now seen corresponding path program 1 times [2024-11-22 02:27:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424635715] [2024-11-22 02:27:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:31,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424635715] [2024-11-22 02:27:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424635715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:27:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077102325] [2024-11-22 02:27:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:33,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:27:33,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:27:33,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:27:33,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:27:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:33,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:27:33,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:27:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:33,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:27:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077102325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:27:34,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:27:34,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 8] total 23 [2024-11-22 02:27:34,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908112988] [2024-11-22 02:27:34,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:27:34,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:27:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:27:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:27:34,388 INFO L87 Difference]: Start difference. First operand 1151 states and 1658 transitions. Second operand has 23 states, 23 states have (on average 14.043478260869565) internal successors, (323), 23 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:43,999 INFO L93 Difference]: Finished difference Result 12499 states and 18010 transitions. [2024-11-22 02:27:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-11-22 02:27:44,000 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.043478260869565) internal successors, (323), 23 states have internal predecessors, (323), 0 states have call successors, (0), 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 110 [2024-11-22 02:27:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:44,018 INFO L225 Difference]: With dead ends: 12499 [2024-11-22 02:27:44,018 INFO L226 Difference]: Without dead ends: 11745 [2024-11-22 02:27:44,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14316 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=4337, Invalid=30819, Unknown=0, NotChecked=0, Total=35156 [2024-11-22 02:27:44,029 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 8781 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8781 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:44,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8781 Valid, 2773 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-22 02:27:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11745 states. [2024-11-22 02:27:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11745 to 10039. [2024-11-22 02:27:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10039 states, 10038 states have (on average 1.4343494720063759) internal successors, (14398), 10038 states have internal predecessors, (14398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10039 states to 10039 states and 14398 transitions. [2024-11-22 02:27:44,222 INFO L78 Accepts]: Start accepts. Automaton has 10039 states and 14398 transitions. Word has length 110 [2024-11-22 02:27:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:44,223 INFO L471 AbstractCegarLoop]: Abstraction has 10039 states and 14398 transitions. [2024-11-22 02:27:44,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.043478260869565) internal successors, (323), 23 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 10039 states and 14398 transitions. [2024-11-22 02:27:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 02:27:44,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:44,224 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:44,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 02:27:44,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:27:44,429 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:44,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1668141927, now seen corresponding path program 1 times [2024-11-22 02:27:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671867113] [2024-11-22 02:27:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 02:27:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671867113] [2024-11-22 02:27:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671867113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:44,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313429466] [2024-11-22 02:27:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:44,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:44,594 INFO L87 Difference]: Start difference. First operand 10039 states and 14398 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:45,067 INFO L93 Difference]: Finished difference Result 40423 states and 58302 transitions. [2024-11-22 02:27:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:45,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 111 [2024-11-22 02:27:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:45,211 INFO L225 Difference]: With dead ends: 40423 [2024-11-22 02:27:45,211 INFO L226 Difference]: Without dead ends: 35235 [2024-11-22 02:27:45,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:45,221 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 1259 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:45,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 1454 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35235 states. [2024-11-22 02:27:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35235 to 14979. [2024-11-22 02:27:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14979 states, 14978 states have (on average 1.4311657097075712) internal successors, (21436), 14978 states have internal predecessors, (21436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14979 states to 14979 states and 21436 transitions. [2024-11-22 02:27:45,666 INFO L78 Accepts]: Start accepts. Automaton has 14979 states and 21436 transitions. Word has length 111 [2024-11-22 02:27:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:45,667 INFO L471 AbstractCegarLoop]: Abstraction has 14979 states and 21436 transitions. [2024-11-22 02:27:45,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 14979 states and 21436 transitions. [2024-11-22 02:27:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 02:27:45,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:45,669 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:45,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 02:27:45,669 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:45,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:45,670 INFO L85 PathProgramCache]: Analyzing trace with hash 12117595, now seen corresponding path program 1 times [2024-11-22 02:27:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:45,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113503622] [2024-11-22 02:27:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:45,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:27:45,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113503622] [2024-11-22 02:27:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113503622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:45,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:45,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552830550] [2024-11-22 02:27:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:45,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:45,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:45,820 INFO L87 Difference]: Start difference. First operand 14979 states and 21436 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:46,547 INFO L93 Difference]: Finished difference Result 45363 states and 65340 transitions. [2024-11-22 02:27:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:46,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 111 [2024-11-22 02:27:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:46,609 INFO L225 Difference]: With dead ends: 45363 [2024-11-22 02:27:46,609 INFO L226 Difference]: Without dead ends: 40175 [2024-11-22 02:27:46,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:46,619 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 1340 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:46,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 1313 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40175 states. [2024-11-22 02:27:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40175 to 19919. [2024-11-22 02:27:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19919 states, 19918 states have (on average 1.4295612009237875) internal successors, (28474), 19918 states have internal predecessors, (28474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19919 states to 19919 states and 28474 transitions. [2024-11-22 02:27:47,189 INFO L78 Accepts]: Start accepts. Automaton has 19919 states and 28474 transitions. Word has length 111 [2024-11-22 02:27:47,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:47,189 INFO L471 AbstractCegarLoop]: Abstraction has 19919 states and 28474 transitions. [2024-11-22 02:27:47,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 19919 states and 28474 transitions. [2024-11-22 02:27:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 02:27:47,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:47,191 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:47,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 02:27:47,192 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:47,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash -13184739, now seen corresponding path program 1 times [2024-11-22 02:27:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61841090] [2024-11-22 02:27:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:27:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:47,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61841090] [2024-11-22 02:27:47,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61841090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:47,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:47,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:47,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067130151] [2024-11-22 02:27:47,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:47,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:47,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:47,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:47,365 INFO L87 Difference]: Start difference. First operand 19919 states and 28474 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:48,408 INFO L93 Difference]: Finished difference Result 50303 states and 72378 transitions. [2024-11-22 02:27:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:48,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 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 111 [2024-11-22 02:27:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:48,481 INFO L225 Difference]: With dead ends: 50303 [2024-11-22 02:27:48,481 INFO L226 Difference]: Without dead ends: 45115 [2024-11-22 02:27:48,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:48,497 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 1424 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:48,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 1369 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45115 states. [2024-11-22 02:27:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45115 to 24859. [2024-11-22 02:27:49,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24859 states, 24858 states have (on average 1.428594416284496) internal successors, (35512), 24858 states have internal predecessors, (35512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24859 states to 24859 states and 35512 transitions. [2024-11-22 02:27:49,197 INFO L78 Accepts]: Start accepts. Automaton has 24859 states and 35512 transitions. Word has length 111 [2024-11-22 02:27:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:49,198 INFO L471 AbstractCegarLoop]: Abstraction has 24859 states and 35512 transitions. [2024-11-22 02:27:49,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 24859 states and 35512 transitions. [2024-11-22 02:27:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 02:27:49,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:49,199 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:49,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 02:27:49,200 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:49,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:49,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2102160607, now seen corresponding path program 1 times [2024-11-22 02:27:49,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:49,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598487726] [2024-11-22 02:27:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:49,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 02:27:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598487726] [2024-11-22 02:27:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598487726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:49,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:49,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:49,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433980591] [2024-11-22 02:27:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:49,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:49,397 INFO L87 Difference]: Start difference. First operand 24859 states and 35512 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:50,204 INFO L93 Difference]: Finished difference Result 55243 states and 79416 transitions. [2024-11-22 02:27:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:50,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 111 [2024-11-22 02:27:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:50,269 INFO L225 Difference]: With dead ends: 55243 [2024-11-22 02:27:50,270 INFO L226 Difference]: Without dead ends: 50055 [2024-11-22 02:27:50,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:50,283 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 1225 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:50,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1550 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50055 states. [2024-11-22 02:27:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50055 to 29799. [2024-11-22 02:27:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29799 states, 29798 states have (on average 1.4279481844419089) internal successors, (42550), 29798 states have internal predecessors, (42550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29799 states to 29799 states and 42550 transitions. [2024-11-22 02:27:51,160 INFO L78 Accepts]: Start accepts. Automaton has 29799 states and 42550 transitions. Word has length 111 [2024-11-22 02:27:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:51,160 INFO L471 AbstractCegarLoop]: Abstraction has 29799 states and 42550 transitions. [2024-11-22 02:27:51,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 29799 states and 42550 transitions. [2024-11-22 02:27:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 02:27:51,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:51,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:51,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 02:27:51,163 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:51,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2117983273, now seen corresponding path program 1 times [2024-11-22 02:27:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249318336] [2024-11-22 02:27:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:27:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249318336] [2024-11-22 02:27:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249318336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:51,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475603605] [2024-11-22 02:27:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:51,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:51,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:51,324 INFO L87 Difference]: Start difference. First operand 29799 states and 42550 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:52,700 INFO L93 Difference]: Finished difference Result 60183 states and 86454 transitions. [2024-11-22 02:27:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:52,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 111 [2024-11-22 02:27:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:52,766 INFO L225 Difference]: With dead ends: 60183 [2024-11-22 02:27:52,766 INFO L226 Difference]: Without dead ends: 54995 [2024-11-22 02:27:52,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:52,784 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 1163 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:52,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1872 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54995 states. [2024-11-22 02:27:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54995 to 34739. [2024-11-22 02:27:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34739 states, 34738 states have (on average 1.4274857504749843) internal successors, (49588), 34738 states have internal predecessors, (49588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34739 states to 34739 states and 49588 transitions. [2024-11-22 02:27:53,792 INFO L78 Accepts]: Start accepts. Automaton has 34739 states and 49588 transitions. Word has length 111 [2024-11-22 02:27:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:53,793 INFO L471 AbstractCegarLoop]: Abstraction has 34739 states and 49588 transitions. [2024-11-22 02:27:53,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 34739 states and 49588 transitions. [2024-11-22 02:27:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 02:27:53,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:53,800 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:53,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 02:27:53,800 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:53,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1657991926, now seen corresponding path program 1 times [2024-11-22 02:27:53,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271047435] [2024-11-22 02:27:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:27:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:54,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271047435] [2024-11-22 02:27:54,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271047435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:54,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:54,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 02:27:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512339479] [2024-11-22 02:27:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:54,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 02:27:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 02:27:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:27:54,091 INFO L87 Difference]: Start difference. First operand 34739 states and 49588 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:55,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:55,726 INFO L93 Difference]: Finished difference Result 63857 states and 91626 transitions. [2024-11-22 02:27:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:27:55,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 111 [2024-11-22 02:27:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:55,791 INFO L225 Difference]: With dead ends: 63857 [2024-11-22 02:27:55,791 INFO L226 Difference]: Without dead ends: 59465 [2024-11-22 02:27:55,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:27:55,803 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 1159 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:55,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1674 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:27:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59465 states. [2024-11-22 02:27:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59465 to 39209. [2024-11-22 02:27:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39209 states, 39208 states have (on average 1.4266731279330749) internal successors, (55937), 39208 states have internal predecessors, (55937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39209 states to 39209 states and 55937 transitions. [2024-11-22 02:27:56,952 INFO L78 Accepts]: Start accepts. Automaton has 39209 states and 55937 transitions. Word has length 111 [2024-11-22 02:27:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:56,952 INFO L471 AbstractCegarLoop]: Abstraction has 39209 states and 55937 transitions. [2024-11-22 02:27:56,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 39209 states and 55937 transitions. [2024-11-22 02:27:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-22 02:27:56,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:56,955 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:56,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 02:27:56,955 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:56,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1861031529, now seen corresponding path program 1 times [2024-11-22 02:27:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:56,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729413370] [2024-11-22 02:27:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729413370] [2024-11-22 02:27:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729413370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:27:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:27:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:27:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533750898] [2024-11-22 02:27:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:27:57,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:27:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:27:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:27:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:57,034 INFO L87 Difference]: Start difference. First operand 39209 states and 55937 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:27:57,900 INFO L93 Difference]: Finished difference Result 56876 states and 80584 transitions. [2024-11-22 02:27:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:27:57,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-22 02:27:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:27:57,916 INFO L225 Difference]: With dead ends: 56876 [2024-11-22 02:27:57,916 INFO L226 Difference]: Without dead ends: 17716 [2024-11-22 02:27:57,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:27:57,930 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 40 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:27:57,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:27:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17716 states. [2024-11-22 02:27:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17716 to 15986. [2024-11-22 02:27:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15986 states, 15985 states have (on average 1.4052549264935876) internal successors, (22463), 15985 states have internal predecessors, (22463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15986 states to 15986 states and 22463 transitions. [2024-11-22 02:27:58,297 INFO L78 Accepts]: Start accepts. Automaton has 15986 states and 22463 transitions. Word has length 114 [2024-11-22 02:27:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:27:58,297 INFO L471 AbstractCegarLoop]: Abstraction has 15986 states and 22463 transitions. [2024-11-22 02:27:58,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:27:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15986 states and 22463 transitions. [2024-11-22 02:27:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-22 02:27:58,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:27:58,299 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:27:58,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 02:27:58,300 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:27:58,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:27:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -156099286, now seen corresponding path program 1 times [2024-11-22 02:27:58,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:27:58,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024080014] [2024-11-22 02:27:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:27:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:27:59,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:27:59,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024080014] [2024-11-22 02:27:59,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024080014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:27:59,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777169548] [2024-11-22 02:27:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:27:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:27:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:27:59,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:27:59,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:27:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:27:59,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 02:27:59,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:28:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:28:00,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:28:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:28:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777169548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:28:03,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:28:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 16] total 39 [2024-11-22 02:28:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105785291] [2024-11-22 02:28:03,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:28:03,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-22 02:28:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:28:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-22 02:28:03,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 02:28:03,266 INFO L87 Difference]: Start difference. First operand 15986 states and 22463 transitions. Second operand has 39 states, 39 states have (on average 7.923076923076923) internal successors, (309), 39 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:28:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:28:29,593 INFO L93 Difference]: Finished difference Result 267634 states and 375364 transitions. [2024-11-22 02:28:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2024-11-22 02:28:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.923076923076923) internal successors, (309), 39 states have internal predecessors, (309), 0 states have call successors, (0), 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 114 [2024-11-22 02:28:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:28:29,882 INFO L225 Difference]: With dead ends: 267634 [2024-11-22 02:28:29,882 INFO L226 Difference]: Without dead ends: 251699 [2024-11-22 02:28:29,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37094 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=13500, Invalid=72056, Unknown=0, NotChecked=0, Total=85556 [2024-11-22 02:28:29,964 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 10522 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10522 SdHoareTripleChecker+Valid, 4702 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-22 02:28:29,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10522 Valid, 4702 Invalid, 4027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-22 02:28:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251699 states. [2024-11-22 02:28:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251699 to 168718. [2024-11-22 02:28:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168718 states, 168717 states have (on average 1.3877676819763272) internal successors, (234140), 168717 states have internal predecessors, (234140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:28:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168718 states to 168718 states and 234140 transitions. [2024-11-22 02:28:36,384 INFO L78 Accepts]: Start accepts. Automaton has 168718 states and 234140 transitions. Word has length 114 [2024-11-22 02:28:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:28:36,385 INFO L471 AbstractCegarLoop]: Abstraction has 168718 states and 234140 transitions. [2024-11-22 02:28:36,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.923076923076923) internal successors, (309), 39 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:28:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 168718 states and 234140 transitions. [2024-11-22 02:28:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-22 02:28:36,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:28:36,389 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:28:36,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:28:36,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 02:28:36,590 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:28:36,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:28:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1310515122, now seen corresponding path program 1 times [2024-11-22 02:28:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:28:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123380599] [2024-11-22 02:28:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:28:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:28:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:28:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:28:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:28:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123380599] [2024-11-22 02:28:36,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123380599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:28:36,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:28:36,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:28:36,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986258502] [2024-11-22 02:28:36,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:28:36,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:28:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:28:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:28:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:28:36,682 INFO L87 Difference]: Start difference. First operand 168718 states and 234140 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:28:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:28:44,011 INFO L93 Difference]: Finished difference Result 404048 states and 562104 transitions. [2024-11-22 02:28:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:28:44,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2024-11-22 02:28:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:28:44,325 INFO L225 Difference]: With dead ends: 404048 [2024-11-22 02:28:44,326 INFO L226 Difference]: Without dead ends: 240694 [2024-11-22 02:28:44,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:28:44,409 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 79 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:28:44,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:28:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240694 states.