./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.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 892d3c9e0b7c167d810581087b0633fb7bb5cd8a7fe1ab934154adc1945085ff --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:23:36,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:23:36,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:23:36,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:23:36,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:23:36,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:23:36,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:23:36,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:23:36,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:23:36,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:23:36,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:23:36,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:23:36,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:23:36,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:23:36,808 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:23:36,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:23:36,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:23:36,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:23:36,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:23:36,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:23:36,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:23:36,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:23:36,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:23:36,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:23:36,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:23:36,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:23:36,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:23:36,812 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:23:36,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:23:36,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:23:36,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:23:36,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:23:36,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:23:36,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:23:36,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:23:36,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:23:36,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:23:36,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:23:36,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:23:36,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:23:36,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:23:36,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:23:36,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 892d3c9e0b7c167d810581087b0633fb7bb5cd8a7fe1ab934154adc1945085ff [2024-10-23 20:23:37,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:23:37,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:23:37,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:23:37,136 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:23:37,136 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:23:37,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2024-10-23 20:23:38,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:23:39,076 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:23:39,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2024-10-23 20:23:39,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707b03c9f/64aa8f0ea0cc4ea19bfc4eb78725dac4/FLAGf98de18ed [2024-10-23 20:23:39,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707b03c9f/64aa8f0ea0cc4ea19bfc4eb78725dac4 [2024-10-23 20:23:39,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:23:39,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:23:39,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:23:39,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:23:39,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:23:39,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:39" (1/1) ... [2024-10-23 20:23:39,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e15e460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:39, skipping insertion in model container [2024-10-23 20:23:39,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:39" (1/1) ... [2024-10-23 20:23:39,203 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:23:39,701 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c[56086,56099] [2024-10-23 20:23:39,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:23:39,760 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:23:40,054 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c[56086,56099] [2024-10-23 20:23:40,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:23:40,121 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:23:40,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40 WrapperNode [2024-10-23 20:23:40,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:23:40,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:23:40,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:23:40,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:23:40,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,264 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-23 20:23:40,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:23:40,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:23:40,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:23:40,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:23:40,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,337 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 20:23:40,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:23:40,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:23:40,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:23:40,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:23:40,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (1/1) ... [2024-10-23 20:23:40,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:23:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:40,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 20:23:40,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 20:23:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:23:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:23:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:23:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:23:40,608 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:23:40,611 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:23:42,366 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-23 20:23:42,366 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:23:42,432 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:23:42,435 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:23:42,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:42 BoogieIcfgContainer [2024-10-23 20:23:42,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:23:42,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:23:42,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:23:42,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:23:42,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:23:39" (1/3) ... [2024-10-23 20:23:42,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341d2514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:42, skipping insertion in model container [2024-10-23 20:23:42,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:40" (2/3) ... [2024-10-23 20:23:42,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341d2514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:42, skipping insertion in model container [2024-10-23 20:23:42,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:42" (3/3) ... [2024-10-23 20:23:42,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2024-10-23 20:23:42,462 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:23:42,462 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:23:42,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:23:42,536 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;@2d76ac40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:23:42,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:23:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-23 20:23:42,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:42,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:42,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:42,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2051895673, now seen corresponding path program 1 times [2024-10-23 20:23:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:42,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971457699] [2024-10-23 20:23:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:43,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971457699] [2024-10-23 20:23:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971457699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:43,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:43,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543313180] [2024-10-23 20:23:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:43,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:23:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:23:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:23:43,188 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:43,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:43,246 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-23 20:23:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:23:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-10-23 20:23:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:43,265 INFO L225 Difference]: With dead ends: 479 [2024-10-23 20:23:43,265 INFO L226 Difference]: Without dead ends: 238 [2024-10-23 20:23:43,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:23:43,272 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:43,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:23:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-23 20:23:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-23 20:23:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-23 20:23:43,316 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 161 [2024-10-23 20:23:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:43,317 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-23 20:23:43,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-23 20:23:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-23 20:23:43,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:43,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:43,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:23:43,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:43,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1773857272, now seen corresponding path program 1 times [2024-10-23 20:23:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:43,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982094085] [2024-10-23 20:23:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:43,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982094085] [2024-10-23 20:23:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982094085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:43,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201617110] [2024-10-23 20:23:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:44,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:44,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:44,003 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:45,003 INFO L93 Difference]: Finished difference Result 699 states and 1161 transitions. [2024-10-23 20:23:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:45,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-10-23 20:23:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:45,007 INFO L225 Difference]: With dead ends: 699 [2024-10-23 20:23:45,008 INFO L226 Difference]: Without dead ends: 462 [2024-10-23 20:23:45,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:45,010 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 79 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:45,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 83 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 20:23:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-10-23 20:23:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2024-10-23 20:23:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.6353467561521253) internal successors, (731), 447 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 731 transitions. [2024-10-23 20:23:45,048 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 731 transitions. Word has length 161 [2024-10-23 20:23:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:45,049 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 731 transitions. [2024-10-23 20:23:45,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 731 transitions. [2024-10-23 20:23:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-23 20:23:45,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:45,058 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:45,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:23:45,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:45,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash 990486036, now seen corresponding path program 1 times [2024-10-23 20:23:45,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374637757] [2024-10-23 20:23:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374637757] [2024-10-23 20:23:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374637757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:45,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:45,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582832597] [2024-10-23 20:23:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:45,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:45,385 INFO L87 Difference]: Start difference. First operand 448 states and 731 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:46,154 INFO L93 Difference]: Finished difference Result 1332 states and 2179 transitions. [2024-10-23 20:23:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:46,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-23 20:23:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:46,158 INFO L225 Difference]: With dead ends: 1332 [2024-10-23 20:23:46,158 INFO L226 Difference]: Without dead ends: 885 [2024-10-23 20:23:46,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:46,161 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:46,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 112 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:23:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-10-23 20:23:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 881. [2024-10-23 20:23:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.6170454545454545) internal successors, (1423), 880 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1423 transitions. [2024-10-23 20:23:46,191 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1423 transitions. Word has length 167 [2024-10-23 20:23:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:46,191 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1423 transitions. [2024-10-23 20:23:46,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1423 transitions. [2024-10-23 20:23:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-23 20:23:46,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:46,198 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:46,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:23:46,198 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:46,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1176829972, now seen corresponding path program 1 times [2024-10-23 20:23:46,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013957041] [2024-10-23 20:23:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:46,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013957041] [2024-10-23 20:23:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013957041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93623981] [2024-10-23 20:23:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:46,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:46,466 INFO L87 Difference]: Start difference. First operand 881 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:47,276 INFO L93 Difference]: Finished difference Result 2574 states and 4171 transitions. [2024-10-23 20:23:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-23 20:23:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:47,283 INFO L225 Difference]: With dead ends: 2574 [2024-10-23 20:23:47,283 INFO L226 Difference]: Without dead ends: 1694 [2024-10-23 20:23:47,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:47,286 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:47,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 190 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:23:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2024-10-23 20:23:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1694. [2024-10-23 20:23:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1693 states have (on average 1.3987005316007088) internal successors, (2368), 1693 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2368 transitions. [2024-10-23 20:23:47,323 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2368 transitions. Word has length 167 [2024-10-23 20:23:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:47,324 INFO L471 AbstractCegarLoop]: Abstraction has 1694 states and 2368 transitions. [2024-10-23 20:23:47,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2368 transitions. [2024-10-23 20:23:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-23 20:23:47,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:47,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:47,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:23:47,328 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:47,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -627339811, now seen corresponding path program 1 times [2024-10-23 20:23:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165098638] [2024-10-23 20:23:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:47,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:47,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165098638] [2024-10-23 20:23:47,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165098638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:47,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:47,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844577467] [2024-10-23 20:23:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:47,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:47,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:47,661 INFO L87 Difference]: Start difference. First operand 1694 states and 2368 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:48,516 INFO L93 Difference]: Finished difference Result 5061 states and 7080 transitions. [2024-10-23 20:23:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-10-23 20:23:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:48,529 INFO L225 Difference]: With dead ends: 5061 [2024-10-23 20:23:48,529 INFO L226 Difference]: Without dead ends: 3368 [2024-10-23 20:23:48,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:48,534 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:48,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 214 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:23:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2024-10-23 20:23:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3359. [2024-10-23 20:23:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 1.3847528290649196) internal successors, (4650), 3358 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 4650 transitions. [2024-10-23 20:23:48,602 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 4650 transitions. Word has length 173 [2024-10-23 20:23:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:48,603 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 4650 transitions. [2024-10-23 20:23:48,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 4650 transitions. [2024-10-23 20:23:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-23 20:23:48,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:48,609 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:48,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:23:48,610 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:48,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash 816073928, now seen corresponding path program 1 times [2024-10-23 20:23:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839885517] [2024-10-23 20:23:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:48,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839885517] [2024-10-23 20:23:48,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839885517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:48,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:48,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487833419] [2024-10-23 20:23:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:48,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:48,878 INFO L87 Difference]: Start difference. First operand 3359 states and 4650 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:49,725 INFO L93 Difference]: Finished difference Result 10005 states and 13850 transitions. [2024-10-23 20:23:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:49,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2024-10-23 20:23:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:49,752 INFO L225 Difference]: With dead ends: 10005 [2024-10-23 20:23:49,753 INFO L226 Difference]: Without dead ends: 6647 [2024-10-23 20:23:49,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:49,760 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:49,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 222 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:23:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2024-10-23 20:23:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6640. [2024-10-23 20:23:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6640 states, 6639 states have (on average 1.3285133303208314) internal successors, (8820), 6639 states have internal predecessors, (8820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6640 states to 6640 states and 8820 transitions. [2024-10-23 20:23:49,889 INFO L78 Accepts]: Start accepts. Automaton has 6640 states and 8820 transitions. Word has length 174 [2024-10-23 20:23:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:49,889 INFO L471 AbstractCegarLoop]: Abstraction has 6640 states and 8820 transitions. [2024-10-23 20:23:49,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6640 states and 8820 transitions. [2024-10-23 20:23:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-23 20:23:49,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:49,899 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:49,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:23:49,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:49,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1718626995, now seen corresponding path program 1 times [2024-10-23 20:23:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:49,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906041917] [2024-10-23 20:23:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 20:23:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:50,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906041917] [2024-10-23 20:23:50,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906041917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:50,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:50,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:50,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778676382] [2024-10-23 20:23:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:50,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:50,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:50,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:50,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:50,060 INFO L87 Difference]: Start difference. First operand 6640 states and 8820 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:50,922 INFO L93 Difference]: Finished difference Result 18402 states and 24735 transitions. [2024-10-23 20:23:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-10-23 20:23:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:50,970 INFO L225 Difference]: With dead ends: 18402 [2024-10-23 20:23:50,970 INFO L226 Difference]: Without dead ends: 12169 [2024-10-23 20:23:50,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:50,985 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:50,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:23:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12169 states. [2024-10-23 20:23:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12169 to 12126. [2024-10-23 20:23:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12126 states, 12125 states have (on average 1.3185154639175258) internal successors, (15987), 12125 states have internal predecessors, (15987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12126 states to 12126 states and 15987 transitions. [2024-10-23 20:23:51,216 INFO L78 Accepts]: Start accepts. Automaton has 12126 states and 15987 transitions. Word has length 175 [2024-10-23 20:23:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:51,217 INFO L471 AbstractCegarLoop]: Abstraction has 12126 states and 15987 transitions. [2024-10-23 20:23:51,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 12126 states and 15987 transitions. [2024-10-23 20:23:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-23 20:23:51,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:51,233 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:51,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:23:51,233 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:51,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2060974238, now seen corresponding path program 1 times [2024-10-23 20:23:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833411685] [2024-10-23 20:23:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:51,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:23:51,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:51,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833411685] [2024-10-23 20:23:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833411685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:51,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:51,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:23:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351586950] [2024-10-23 20:23:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:51,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:51,533 INFO L87 Difference]: Start difference. First operand 12126 states and 15987 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:52,550 INFO L93 Difference]: Finished difference Result 31582 states and 42423 transitions. [2024-10-23 20:23:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 182 [2024-10-23 20:23:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:52,599 INFO L225 Difference]: With dead ends: 31582 [2024-10-23 20:23:52,599 INFO L226 Difference]: Without dead ends: 19863 [2024-10-23 20:23:52,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:52,615 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 218 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:52,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 359 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:23:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19863 states. [2024-10-23 20:23:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19863 to 19853. [2024-10-23 20:23:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19853 states, 19852 states have (on average 1.2798206729800523) internal successors, (25407), 19852 states have internal predecessors, (25407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19853 states to 19853 states and 25407 transitions. [2024-10-23 20:23:52,945 INFO L78 Accepts]: Start accepts. Automaton has 19853 states and 25407 transitions. Word has length 182 [2024-10-23 20:23:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:52,946 INFO L471 AbstractCegarLoop]: Abstraction has 19853 states and 25407 transitions. [2024-10-23 20:23:52,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19853 states and 25407 transitions. [2024-10-23 20:23:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-23 20:23:52,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:52,970 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:52,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 20:23:52,970 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:52,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:52,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1354510896, now seen corresponding path program 1 times [2024-10-23 20:23:52,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:52,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135350977] [2024-10-23 20:23:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:23:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135350977] [2024-10-23 20:23:53,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135350977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:53,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:23:53,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337809674] [2024-10-23 20:23:53,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:53,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:23:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:23:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:23:53,336 INFO L87 Difference]: Start difference. First operand 19853 states and 25407 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:54,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:54,382 INFO L93 Difference]: Finished difference Result 45522 states and 58725 transitions. [2024-10-23 20:23:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:23:54,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2024-10-23 20:23:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:54,438 INFO L225 Difference]: With dead ends: 45522 [2024-10-23 20:23:54,438 INFO L226 Difference]: Without dead ends: 26076 [2024-10-23 20:23:54,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:23:54,465 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 626 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:54,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 50 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:23:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26076 states. [2024-10-23 20:23:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26076 to 26067. [2024-10-23 20:23:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26067 states, 26066 states have (on average 1.234903705977135) internal successors, (32189), 26066 states have internal predecessors, (32189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26067 states to 26067 states and 32189 transitions. [2024-10-23 20:23:54,929 INFO L78 Accepts]: Start accepts. Automaton has 26067 states and 32189 transitions. Word has length 186 [2024-10-23 20:23:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:54,931 INFO L471 AbstractCegarLoop]: Abstraction has 26067 states and 32189 transitions. [2024-10-23 20:23:54,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 26067 states and 32189 transitions. [2024-10-23 20:23:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-23 20:23:54,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:54,962 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:54,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 20:23:54,962 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:54,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash -747284754, now seen corresponding path program 1 times [2024-10-23 20:23:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088886522] [2024-10-23 20:23:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088886522] [2024-10-23 20:23:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088886522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855346785] [2024-10-23 20:23:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:55,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:55,354 INFO L87 Difference]: Start difference. First operand 26067 states and 32189 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:56,188 INFO L93 Difference]: Finished difference Result 67614 states and 83813 transitions. [2024-10-23 20:23:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2024-10-23 20:23:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:56,392 INFO L225 Difference]: With dead ends: 67614 [2024-10-23 20:23:56,393 INFO L226 Difference]: Without dead ends: 41954 [2024-10-23 20:23:56,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:56,418 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 207 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:56,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 106 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:23:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41954 states. [2024-10-23 20:23:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41954 to 41939. [2024-10-23 20:23:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41939 states, 41938 states have (on average 1.2147694215270162) internal successors, (50945), 41938 states have internal predecessors, (50945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41939 states to 41939 states and 50945 transitions. [2024-10-23 20:23:57,084 INFO L78 Accepts]: Start accepts. Automaton has 41939 states and 50945 transitions. Word has length 189 [2024-10-23 20:23:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:57,084 INFO L471 AbstractCegarLoop]: Abstraction has 41939 states and 50945 transitions. [2024-10-23 20:23:57,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 41939 states and 50945 transitions. [2024-10-23 20:23:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-23 20:23:57,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:57,118 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:57,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 20:23:57,118 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:57,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash -310629943, now seen corresponding path program 1 times [2024-10-23 20:23:57,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748842405] [2024-10-23 20:23:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:57,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:23:57,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:57,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748842405] [2024-10-23 20:23:57,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748842405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:57,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172249066] [2024-10-23 20:23:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:57,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:57,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:57,828 INFO L87 Difference]: Start difference. First operand 41939 states and 50945 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:58,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:58,799 INFO L93 Difference]: Finished difference Result 98163 states and 120487 transitions. [2024-10-23 20:23:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:58,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-10-23 20:23:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:58,897 INFO L225 Difference]: With dead ends: 98163 [2024-10-23 20:23:58,897 INFO L226 Difference]: Without dead ends: 57240 [2024-10-23 20:23:58,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:58,926 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 202 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:58,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 178 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:23:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57240 states. [2024-10-23 20:23:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57240 to 57212. [2024-10-23 20:23:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57212 states, 57211 states have (on average 1.2304451941060286) internal successors, (70395), 57211 states have internal predecessors, (70395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57212 states to 57212 states and 70395 transitions. [2024-10-23 20:23:59,900 INFO L78 Accepts]: Start accepts. Automaton has 57212 states and 70395 transitions. Word has length 191 [2024-10-23 20:23:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:59,901 INFO L471 AbstractCegarLoop]: Abstraction has 57212 states and 70395 transitions. [2024-10-23 20:23:59,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 57212 states and 70395 transitions. [2024-10-23 20:23:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-23 20:23:59,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:59,926 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:59,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 20:23:59,927 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:59,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 560096127, now seen corresponding path program 1 times [2024-10-23 20:23:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:59,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819755157] [2024-10-23 20:23:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:24:00,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:00,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819755157] [2024-10-23 20:24:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819755157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:00,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:24:00,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966613600] [2024-10-23 20:24:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:00,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:00,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:00,465 INFO L87 Difference]: Start difference. First operand 57212 states and 70395 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:01,713 INFO L93 Difference]: Finished difference Result 137640 states and 169698 transitions. [2024-10-23 20:24:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2024-10-23 20:24:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:01,865 INFO L225 Difference]: With dead ends: 137640 [2024-10-23 20:24:01,866 INFO L226 Difference]: Without dead ends: 81444 [2024-10-23 20:24:01,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:01,904 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 226 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:01,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 162 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:24:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81444 states. [2024-10-23 20:24:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81444 to 81440. [2024-10-23 20:24:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81440 states, 81439 states have (on average 1.2316334925527082) internal successors, (100303), 81439 states have internal predecessors, (100303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81440 states to 81440 states and 100303 transitions. [2024-10-23 20:24:03,281 INFO L78 Accepts]: Start accepts. Automaton has 81440 states and 100303 transitions. Word has length 195 [2024-10-23 20:24:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:03,282 INFO L471 AbstractCegarLoop]: Abstraction has 81440 states and 100303 transitions. [2024-10-23 20:24:03,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 81440 states and 100303 transitions. [2024-10-23 20:24:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-10-23 20:24:03,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:03,305 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:03,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 20:24:03,305 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:03,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:03,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1407650071, now seen corresponding path program 1 times [2024-10-23 20:24:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:03,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181419372] [2024-10-23 20:24:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:24:03,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181419372] [2024-10-23 20:24:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181419372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:03,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:03,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:24:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732481598] [2024-10-23 20:24:03,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:03,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:24:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:24:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:24:03,761 INFO L87 Difference]: Start difference. First operand 81440 states and 100303 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:05,655 INFO L93 Difference]: Finished difference Result 206239 states and 254660 transitions. [2024-10-23 20:24:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:24:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-10-23 20:24:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:05,829 INFO L225 Difference]: With dead ends: 206239 [2024-10-23 20:24:05,829 INFO L226 Difference]: Without dead ends: 125815 [2024-10-23 20:24:05,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:24:05,871 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 479 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:05,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 475 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 20:24:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125815 states. [2024-10-23 20:24:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125815 to 125595. [2024-10-23 20:24:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125595 states, 125594 states have (on average 1.2175900122617322) internal successors, (152922), 125594 states have internal predecessors, (152922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125595 states to 125595 states and 152922 transitions. [2024-10-23 20:24:07,935 INFO L78 Accepts]: Start accepts. Automaton has 125595 states and 152922 transitions. Word has length 206 [2024-10-23 20:24:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:07,935 INFO L471 AbstractCegarLoop]: Abstraction has 125595 states and 152922 transitions. [2024-10-23 20:24:07,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:07,936 INFO L276 IsEmpty]: Start isEmpty. Operand 125595 states and 152922 transitions. [2024-10-23 20:24:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-23 20:24:07,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:07,983 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:07,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 20:24:07,983 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:07,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:07,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1169610535, now seen corresponding path program 1 times [2024-10-23 20:24:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:07,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971558147] [2024-10-23 20:24:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:07,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 20:24:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971558147] [2024-10-23 20:24:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971558147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:08,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:08,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:24:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241992076] [2024-10-23 20:24:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:08,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:08,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:08,321 INFO L87 Difference]: Start difference. First operand 125595 states and 152922 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:09,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:09,901 INFO L93 Difference]: Finished difference Result 217961 states and 268206 transitions. [2024-10-23 20:24:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:09,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 227 [2024-10-23 20:24:09,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:10,032 INFO L225 Difference]: With dead ends: 217961 [2024-10-23 20:24:10,032 INFO L226 Difference]: Without dead ends: 94809 [2024-10-23 20:24:10,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:10,104 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 171 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:10,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 367 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:24:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94809 states. [2024-10-23 20:24:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94809 to 88913. [2024-10-23 20:24:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88913 states, 88912 states have (on average 1.1646459420550657) internal successors, (103551), 88912 states have internal predecessors, (103551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88913 states to 88913 states and 103551 transitions. [2024-10-23 20:24:11,938 INFO L78 Accepts]: Start accepts. Automaton has 88913 states and 103551 transitions. Word has length 227 [2024-10-23 20:24:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:11,938 INFO L471 AbstractCegarLoop]: Abstraction has 88913 states and 103551 transitions. [2024-10-23 20:24:11,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 88913 states and 103551 transitions. [2024-10-23 20:24:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-10-23 20:24:11,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:11,959 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:11,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 20:24:11,960 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:11,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 301554004, now seen corresponding path program 1 times [2024-10-23 20:24:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:11,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140399167] [2024-10-23 20:24:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:24:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140399167] [2024-10-23 20:24:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140399167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:12,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:12,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:24:12,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323091194] [2024-10-23 20:24:12,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:12,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:12,526 INFO L87 Difference]: Start difference. First operand 88913 states and 103551 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:13,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:13,737 INFO L93 Difference]: Finished difference Result 168058 states and 195530 transitions. [2024-10-23 20:24:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:13,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2024-10-23 20:24:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:13,851 INFO L225 Difference]: With dead ends: 168058 [2024-10-23 20:24:13,851 INFO L226 Difference]: Without dead ends: 88710 [2024-10-23 20:24:13,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:13,912 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:13,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 148 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:24:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88710 states. [2024-10-23 20:24:15,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88710 to 88710. [2024-10-23 20:24:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88710 states, 88709 states have (on average 1.1647521671983676) internal successors, (103324), 88709 states have internal predecessors, (103324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88710 states to 88710 states and 103324 transitions. [2024-10-23 20:24:15,307 INFO L78 Accepts]: Start accepts. Automaton has 88710 states and 103324 transitions. Word has length 235 [2024-10-23 20:24:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:15,308 INFO L471 AbstractCegarLoop]: Abstraction has 88710 states and 103324 transitions. [2024-10-23 20:24:15,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 88710 states and 103324 transitions. [2024-10-23 20:24:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-23 20:24:15,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:15,327 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-10-23 20:24:15,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 20:24:15,327 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:15,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:15,328 INFO L85 PathProgramCache]: Analyzing trace with hash -88581847, now seen corresponding path program 1 times [2024-10-23 20:24:15,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:15,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634137921] [2024-10-23 20:24:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:24:16,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634137921] [2024-10-23 20:24:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634137921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:16,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:24:16,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772892202] [2024-10-23 20:24:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:16,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:24:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:24:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:24:16,092 INFO L87 Difference]: Start difference. First operand 88710 states and 103324 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:17,404 INFO L93 Difference]: Finished difference Result 170140 states and 198634 transitions. [2024-10-23 20:24:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:24:17,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2024-10-23 20:24:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:17,517 INFO L225 Difference]: With dead ends: 170140 [2024-10-23 20:24:17,518 INFO L226 Difference]: Without dead ends: 96484 [2024-10-23 20:24:17,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:24:17,572 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 358 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:17,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 111 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:24:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96484 states. [2024-10-23 20:24:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96484 to 93398. [2024-10-23 20:24:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93398 states, 93397 states have (on average 1.164202276304378) internal successors, (108733), 93397 states have internal predecessors, (108733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93398 states to 93398 states and 108733 transitions. [2024-10-23 20:24:19,274 INFO L78 Accepts]: Start accepts. Automaton has 93398 states and 108733 transitions. Word has length 263 [2024-10-23 20:24:19,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:19,275 INFO L471 AbstractCegarLoop]: Abstraction has 93398 states and 108733 transitions. [2024-10-23 20:24:19,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93398 states and 108733 transitions. [2024-10-23 20:24:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-10-23 20:24:19,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:19,311 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:19,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 20:24:19,311 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:19,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash 949296900, now seen corresponding path program 1 times [2024-10-23 20:24:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:19,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470497660] [2024-10-23 20:24:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 20:24:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470497660] [2024-10-23 20:24:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470497660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:19,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:19,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:24:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591414433] [2024-10-23 20:24:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:19,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:19,762 INFO L87 Difference]: Start difference. First operand 93398 states and 108733 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:21,215 INFO L93 Difference]: Finished difference Result 185791 states and 216122 transitions. [2024-10-23 20:24:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 283 [2024-10-23 20:24:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:21,320 INFO L225 Difference]: With dead ends: 185791 [2024-10-23 20:24:21,320 INFO L226 Difference]: Without dead ends: 85701 [2024-10-23 20:24:21,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:21,350 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 163 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:21,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 372 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:24:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85701 states. [2024-10-23 20:24:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85701 to 67381. [2024-10-23 20:24:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67381 states, 67380 states have (on average 1.1146482635796973) internal successors, (75105), 67380 states have internal predecessors, (75105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67381 states to 67381 states and 75105 transitions. [2024-10-23 20:24:22,541 INFO L78 Accepts]: Start accepts. Automaton has 67381 states and 75105 transitions. Word has length 283 [2024-10-23 20:24:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:22,542 INFO L471 AbstractCegarLoop]: Abstraction has 67381 states and 75105 transitions. [2024-10-23 20:24:22,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 67381 states and 75105 transitions. [2024-10-23 20:24:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-10-23 20:24:22,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:22,560 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:24:22,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 20:24:22,560 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:22,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash 60376186, now seen corresponding path program 1 times [2024-10-23 20:24:22,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:22,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897220680] [2024-10-23 20:24:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:24:23,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:23,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897220680] [2024-10-23 20:24:23,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897220680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:23,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:23,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:24:23,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446684470] [2024-10-23 20:24:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:23,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:23,013 INFO L87 Difference]: Start difference. First operand 67381 states and 75105 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:24,011 INFO L93 Difference]: Finished difference Result 129071 states and 143707 transitions. [2024-10-23 20:24:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 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 291 [2024-10-23 20:24:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:24,092 INFO L225 Difference]: With dead ends: 129071 [2024-10-23 20:24:24,092 INFO L226 Difference]: Without dead ends: 69223 [2024-10-23 20:24:24,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:24:24,127 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 85 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:24,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:24:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69223 states. [2024-10-23 20:24:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69223 to 69005. [2024-10-23 20:24:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69005 states, 69004 states have (on average 1.1108196626282534) internal successors, (76651), 69004 states have internal predecessors, (76651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69005 states to 69005 states and 76651 transitions. [2024-10-23 20:24:24,793 INFO L78 Accepts]: Start accepts. Automaton has 69005 states and 76651 transitions. Word has length 291 [2024-10-23 20:24:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:24,793 INFO L471 AbstractCegarLoop]: Abstraction has 69005 states and 76651 transitions. [2024-10-23 20:24:24,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 69005 states and 76651 transitions. [2024-10-23 20:24:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-10-23 20:24:24,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:24,808 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:24:24,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 20:24:24,808 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:24,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1176233585, now seen corresponding path program 1 times [2024-10-23 20:24:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:24,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778126518] [2024-10-23 20:24:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:24:25,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:25,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778126518] [2024-10-23 20:24:25,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778126518] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:24:25,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114443482] [2024-10-23 20:24:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:25,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:24:25,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:24:25,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:24:25,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:24:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:25,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:24:25,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:24:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-10-23 20:24:26,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:24:26,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114443482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:26,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:24:26,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 20:24:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165933969] [2024-10-23 20:24:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:26,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:26,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:24:26,263 INFO L87 Difference]: Start difference. First operand 69005 states and 76651 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:27,550 INFO L93 Difference]: Finished difference Result 156756 states and 175248 transitions. [2024-10-23 20:24:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:27,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 293 [2024-10-23 20:24:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:27,645 INFO L225 Difference]: With dead ends: 156756 [2024-10-23 20:24:27,645 INFO L226 Difference]: Without dead ends: 88769 [2024-10-23 20:24:27,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:24:27,659 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 93 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:27,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 86 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:24:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88769 states. [2024-10-23 20:24:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88769 to 86323. [2024-10-23 20:24:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86323 states, 86322 states have (on average 1.112543731609555) internal successors, (96037), 86322 states have internal predecessors, (96037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86323 states to 86323 states and 96037 transitions. [2024-10-23 20:24:28,876 INFO L78 Accepts]: Start accepts. Automaton has 86323 states and 96037 transitions. Word has length 293 [2024-10-23 20:24:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:28,876 INFO L471 AbstractCegarLoop]: Abstraction has 86323 states and 96037 transitions. [2024-10-23 20:24:28,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 86323 states and 96037 transitions. [2024-10-23 20:24:28,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-10-23 20:24:28,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:28,895 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:28,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 20:24:29,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:24:29,096 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:29,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:29,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1309134433, now seen corresponding path program 1 times [2024-10-23 20:24:29,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:29,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251906658] [2024-10-23 20:24:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-23 20:24:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251906658] [2024-10-23 20:24:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251906658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:29,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:24:29,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:24:29,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069801750] [2024-10-23 20:24:29,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:24:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:24:29,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:24:29,343 INFO L87 Difference]: Start difference. First operand 86323 states and 96037 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:30,387 INFO L93 Difference]: Finished difference Result 166606 states and 185363 transitions. [2024-10-23 20:24:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:24:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-10-23 20:24:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:30,480 INFO L225 Difference]: With dead ends: 166606 [2024-10-23 20:24:30,480 INFO L226 Difference]: Without dead ends: 87002 [2024-10-23 20:24:30,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:24:30,899 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 366 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:30,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 96 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:24:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87002 states. [2024-10-23 20:24:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87002 to 85308. [2024-10-23 20:24:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85308 states, 85307 states have (on average 1.1124526709414233) internal successors, (94900), 85307 states have internal predecessors, (94900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85308 states to 85308 states and 94900 transitions. [2024-10-23 20:24:32,101 INFO L78 Accepts]: Start accepts. Automaton has 85308 states and 94900 transitions. Word has length 299 [2024-10-23 20:24:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:32,107 INFO L471 AbstractCegarLoop]: Abstraction has 85308 states and 94900 transitions. [2024-10-23 20:24:32,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 85308 states and 94900 transitions. [2024-10-23 20:24:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-10-23 20:24:32,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:32,161 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:32,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 20:24:32,162 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:32,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1609708082, now seen corresponding path program 1 times [2024-10-23 20:24:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:32,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597076417] [2024-10-23 20:24:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-23 20:24:32,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597076417] [2024-10-23 20:24:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597076417] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:24:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089889062] [2024-10-23 20:24:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:32,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:24:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:24:32,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:24:32,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 20:24:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:32,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 20:24:32,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:24:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:24:33,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:24:33,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089889062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:33,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:24:33,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2024-10-23 20:24:33,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029393904] [2024-10-23 20:24:33,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:33,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 20:24:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 20:24:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 20:24:33,137 INFO L87 Difference]: Start difference. First operand 85308 states and 94900 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:34,696 INFO L93 Difference]: Finished difference Result 236703 states and 261750 transitions. [2024-10-23 20:24:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 20:24:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 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 306 [2024-10-23 20:24:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:34,869 INFO L225 Difference]: With dead ends: 236703 [2024-10-23 20:24:34,869 INFO L226 Difference]: Without dead ends: 152413 [2024-10-23 20:24:34,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 20:24:34,922 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 925 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:34,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 558 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:24:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152413 states. [2024-10-23 20:24:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152413 to 135921. [2024-10-23 20:24:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135921 states, 135920 states have (on average 1.1062389640965273) internal successors, (150360), 135920 states have internal predecessors, (150360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135921 states to 135921 states and 150360 transitions. [2024-10-23 20:24:37,122 INFO L78 Accepts]: Start accepts. Automaton has 135921 states and 150360 transitions. Word has length 306 [2024-10-23 20:24:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:37,123 INFO L471 AbstractCegarLoop]: Abstraction has 135921 states and 150360 transitions. [2024-10-23 20:24:37,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 135921 states and 150360 transitions. [2024-10-23 20:24:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-10-23 20:24:37,138 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:37,139 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:24:37,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 20:24:37,340 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,SelfDestructingSolverStorable20 [2024-10-23 20:24:37,340 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:37,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:37,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1871530072, now seen corresponding path program 1 times [2024-10-23 20:24:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497472654] [2024-10-23 20:24:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-10-23 20:24:37,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:37,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497472654] [2024-10-23 20:24:37,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497472654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:24:37,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454566649] [2024-10-23 20:24:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:37,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:24:37,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:24:37,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:24:37,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 20:24:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:37,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:24:37,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:24:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-23 20:24:38,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:24:38,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454566649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:24:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:24:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403917221] [2024-10-23 20:24:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:38,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:38,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:24:38,027 INFO L87 Difference]: Start difference. First operand 135921 states and 150360 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:39,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:39,390 INFO L93 Difference]: Finished difference Result 266595 states and 295202 transitions. [2024-10-23 20:24:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:39,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 324 [2024-10-23 20:24:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:39,567 INFO L225 Difference]: With dead ends: 266595 [2024-10-23 20:24:39,567 INFO L226 Difference]: Without dead ends: 134335 [2024-10-23 20:24:39,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:24:39,641 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 68 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:39,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 114 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:24:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134335 states. [2024-10-23 20:24:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134335 to 130430. [2024-10-23 20:24:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130430 states, 130429 states have (on average 1.1031902414340369) internal successors, (143888), 130429 states have internal predecessors, (143888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130430 states to 130430 states and 143888 transitions. [2024-10-23 20:24:41,308 INFO L78 Accepts]: Start accepts. Automaton has 130430 states and 143888 transitions. Word has length 324 [2024-10-23 20:24:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:24:41,309 INFO L471 AbstractCegarLoop]: Abstraction has 130430 states and 143888 transitions. [2024-10-23 20:24:41,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 130430 states and 143888 transitions. [2024-10-23 20:24:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-10-23 20:24:41,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:24:41,321 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:24:41,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 20:24:41,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:24:41,522 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:24:41,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:24:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1762580846, now seen corresponding path program 1 times [2024-10-23 20:24:41,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:24:41,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859005626] [2024-10-23 20:24:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:24:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-23 20:24:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:24:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859005626] [2024-10-23 20:24:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859005626] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:24:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679185947] [2024-10-23 20:24:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:24:42,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:24:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:24:42,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:24:42,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 20:24:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:24:42,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:24:42,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:24:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-23 20:24:42,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:24:42,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679185947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:24:42,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:24:42,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:24:42,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508130465] [2024-10-23 20:24:42,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:24:42,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:24:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:24:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:24:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:24:42,833 INFO L87 Difference]: Start difference. First operand 130430 states and 143888 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:24:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:24:44,171 INFO L93 Difference]: Finished difference Result 257667 states and 284304 transitions. [2024-10-23 20:24:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:24:44,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 335 [2024-10-23 20:24:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:24:44,306 INFO L225 Difference]: With dead ends: 257667 [2024-10-23 20:24:44,306 INFO L226 Difference]: Without dead ends: 127441 [2024-10-23 20:24:44,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:24:44,346 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:24:44,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 303 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:24:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127441 states.