./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.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 065397af3cd6d10649fc8ba37687b2a2b7dcb462be78997de981751c3e212e90 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:46:17,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:46:17,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:46:17,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:46:17,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:46:17,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:46:17,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:46:17,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:46:17,136 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:46:17,137 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:46:17,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:46:17,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:46:17,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:46:17,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:46:17,138 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:46:17,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:46:17,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:46:17,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:46:17,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:46:17,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:46:17,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:46:17,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:46:17,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:46:17,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:46:17,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:46:17,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:46:17,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:46:17,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:46:17,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:46:17,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:46:17,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:46:17,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:46:17,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:46:17,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:46:17,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:46:17,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:46:17,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:46:17,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:46:17,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:46:17,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:46:17,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:46:17,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:46:17,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065397af3cd6d10649fc8ba37687b2a2b7dcb462be78997de981751c3e212e90 [2024-11-19 22:46:17,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:46:17,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:46:17,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:46:17,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:46:17,350 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:46:17,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-19 22:46:18,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:46:18,900 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:46:18,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-19 22:46:18,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f4738c8/f7c82850b20c48d7bde70012bf5ee741/FLAGe8303c7aa [2024-11-19 22:46:18,939 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f4738c8/f7c82850b20c48d7bde70012bf5ee741 [2024-11-19 22:46:18,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:46:18,944 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:46:18,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:46:18,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:46:18,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:46:18,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:46:18" (1/1) ... [2024-11-19 22:46:18,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713c64c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:18, skipping insertion in model container [2024-11-19 22:46:18,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:46:18" (1/1) ... [2024-11-19 22:46:19,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:46:19,296 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-19 22:46:19,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:46:19,346 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:46:19,384 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2024-11-19 22:46:19,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:46:19,418 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:46:19,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19 WrapperNode [2024-11-19 22:46:19,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:46:19,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:46:19,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:46:19,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:46:19,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,467 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 471 [2024-11-19 22:46:19,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:46:19,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:46:19,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:46:19,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:46:19,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,507 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 22:46:19,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:46:19,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:46:19,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:46:19,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:46:19,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (1/1) ... [2024-11-19 22:46:19,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:46:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:46:19,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 22:46:19,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 22:46:19,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:46:19,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:46:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:46:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:46:19,735 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:46:19,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:46:20,127 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-19 22:46:20,128 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:46:20,142 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:46:20,142 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 22:46:20,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:46:20 BoogieIcfgContainer [2024-11-19 22:46:20,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:46:20,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:46:20,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:46:20,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:46:20,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:46:18" (1/3) ... [2024-11-19 22:46:20,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee139cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:46:20, skipping insertion in model container [2024-11-19 22:46:20,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:46:19" (2/3) ... [2024-11-19 22:46:20,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee139cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:46:20, skipping insertion in model container [2024-11-19 22:46:20,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:46:20" (3/3) ... [2024-11-19 22:46:20,151 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-19 22:46:20,166 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:46:20,166 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:46:20,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:46:20,227 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;@4314cb3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:46:20,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:46:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 22:46:20,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:20,240 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:20,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:20,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:20,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2024-11-19 22:46:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:20,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193348217] [2024-11-19 22:46:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:20,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193348217] [2024-11-19 22:46:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193348217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:20,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:20,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970161694] [2024-11-19 22:46:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:20,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:20,629 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:20,688 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2024-11-19 22:46:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-19 22:46:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:20,726 INFO L225 Difference]: With dead ends: 260 [2024-11-19 22:46:20,727 INFO L226 Difference]: Without dead ends: 171 [2024-11-19 22:46:20,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:20,733 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:20,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 401 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-19 22:46:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-11-19 22:46:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.505952380952381) internal successors, (253), 168 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2024-11-19 22:46:20,803 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2024-11-19 22:46:20,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:20,803 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2024-11-19 22:46:20,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2024-11-19 22:46:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 22:46:20,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:20,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:20,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:46:20,809 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:20,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2024-11-19 22:46:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:20,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98236951] [2024-11-19 22:46:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98236951] [2024-11-19 22:46:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98236951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85615899] [2024-11-19 22:46:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:20,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:20,922 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:20,963 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2024-11-19 22:46:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-19 22:46:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:20,965 INFO L225 Difference]: With dead ends: 421 [2024-11-19 22:46:20,965 INFO L226 Difference]: Without dead ends: 279 [2024-11-19 22:46:20,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:20,967 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 110 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:20,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-19 22:46:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2024-11-19 22:46:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.536231884057971) internal successors, (424), 276 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2024-11-19 22:46:20,978 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2024-11-19 22:46:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:20,979 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2024-11-19 22:46:20,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2024-11-19 22:46:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 22:46:20,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:20,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:20,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:46:20,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:20,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2024-11-19 22:46:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625936637] [2024-11-19 22:46:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625936637] [2024-11-19 22:46:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625936637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:21,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:21,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099590422] [2024-11-19 22:46:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:21,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:21,086 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:21,112 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2024-11-19 22:46:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-19 22:46:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:21,115 INFO L225 Difference]: With dead ends: 713 [2024-11-19 22:46:21,115 INFO L226 Difference]: Without dead ends: 463 [2024-11-19 22:46:21,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:21,117 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 105 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:21,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-19 22:46:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-19 22:46:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5478260869565217) internal successors, (712), 460 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2024-11-19 22:46:21,138 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2024-11-19 22:46:21,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:21,138 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2024-11-19 22:46:21,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2024-11-19 22:46:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 22:46:21,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:21,139 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:21,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:46:21,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:21,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2024-11-19 22:46:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:21,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934004907] [2024-11-19 22:46:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:21,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:21,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934004907] [2024-11-19 22:46:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934004907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:21,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100165258] [2024-11-19 22:46:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:21,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:21,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:21,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:21,199 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:21,224 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2024-11-19 22:46:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-19 22:46:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:21,231 INFO L225 Difference]: With dead ends: 1201 [2024-11-19 22:46:21,235 INFO L226 Difference]: Without dead ends: 767 [2024-11-19 22:46:21,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:21,237 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:21,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-19 22:46:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2024-11-19 22:46:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.544502617801047) internal successors, (1180), 764 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2024-11-19 22:46:21,277 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2024-11-19 22:46:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:21,280 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2024-11-19 22:46:21,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2024-11-19 22:46:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 22:46:21,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:21,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:21,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:46:21,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:21,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2024-11-19 22:46:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122234983] [2024-11-19 22:46:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122234983] [2024-11-19 22:46:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122234983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:46:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751131735] [2024-11-19 22:46:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:21,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:46:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:46:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:21,516 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:21,620 INFO L93 Difference]: Finished difference Result 4455 states and 6945 transitions. [2024-11-19 22:46:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:46:21,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-19 22:46:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:21,631 INFO L225 Difference]: With dead ends: 4455 [2024-11-19 22:46:21,631 INFO L226 Difference]: Without dead ends: 3717 [2024-11-19 22:46:21,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:46:21,634 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 904 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:21,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1080 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:46:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2024-11-19 22:46:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1501. [2024-11-19 22:46:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.5333333333333334) internal successors, (2300), 1500 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2300 transitions. [2024-11-19 22:46:21,667 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2300 transitions. Word has length 52 [2024-11-19 22:46:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:21,668 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2300 transitions. [2024-11-19 22:46:21,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2300 transitions. [2024-11-19 22:46:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 22:46:21,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:21,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:21,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:46:21,672 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:21,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 768629036, now seen corresponding path program 1 times [2024-11-19 22:46:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092025726] [2024-11-19 22:46:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:21,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092025726] [2024-11-19 22:46:21,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092025726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:21,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:21,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:46:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405170567] [2024-11-19 22:46:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:21,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:46:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:46:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:21,832 INFO L87 Difference]: Start difference. First operand 1501 states and 2300 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:21,914 INFO L93 Difference]: Finished difference Result 6501 states and 9920 transitions. [2024-11-19 22:46:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:46:21,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-19 22:46:21,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:21,932 INFO L225 Difference]: With dead ends: 6501 [2024-11-19 22:46:21,932 INFO L226 Difference]: Without dead ends: 5027 [2024-11-19 22:46:21,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:21,939 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 496 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:21,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 578 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:46:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2024-11-19 22:46:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5021. [2024-11-19 22:46:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.5163346613545816) internal successors, (7612), 5020 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7612 transitions. [2024-11-19 22:46:22,031 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7612 transitions. Word has length 53 [2024-11-19 22:46:22,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:22,031 INFO L471 AbstractCegarLoop]: Abstraction has 5021 states and 7612 transitions. [2024-11-19 22:46:22,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7612 transitions. [2024-11-19 22:46:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 22:46:22,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:22,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:22,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:46:22,033 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:22,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1792030237, now seen corresponding path program 1 times [2024-11-19 22:46:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905595983] [2024-11-19 22:46:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:22,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:22,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905595983] [2024-11-19 22:46:22,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905595983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:22,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:22,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:46:22,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751617878] [2024-11-19 22:46:22,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:22,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:46:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:46:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:46:22,141 INFO L87 Difference]: Start difference. First operand 5021 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:22,342 INFO L93 Difference]: Finished difference Result 15009 states and 22782 transitions. [2024-11-19 22:46:22,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:46:22,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-19 22:46:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:22,372 INFO L225 Difference]: With dead ends: 15009 [2024-11-19 22:46:22,373 INFO L226 Difference]: Without dead ends: 10015 [2024-11-19 22:46:22,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:46:22,382 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 667 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:22,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 171 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:46:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10015 states. [2024-11-19 22:46:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10015 to 10013. [2024-11-19 22:46:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10013 states, 10012 states have (on average 1.5065920894926088) internal successors, (15084), 10012 states have internal predecessors, (15084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 15084 transitions. [2024-11-19 22:46:22,538 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 15084 transitions. Word has length 55 [2024-11-19 22:46:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:22,538 INFO L471 AbstractCegarLoop]: Abstraction has 10013 states and 15084 transitions. [2024-11-19 22:46:22,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 15084 transitions. [2024-11-19 22:46:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 22:46:22,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:22,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:22,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:46:22,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:22,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2024-11-19 22:46:22,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861236357] [2024-11-19 22:46:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:22,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:22,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:22,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861236357] [2024-11-19 22:46:22,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861236357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:22,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:46:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509948712] [2024-11-19 22:46:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:22,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:46:22,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:46:22,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:46:22,800 INFO L87 Difference]: Start difference. First operand 10013 states and 15084 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:22,839 INFO L93 Difference]: Finished difference Result 10527 states and 15853 transitions. [2024-11-19 22:46:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:46:22,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-19 22:46:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:22,862 INFO L225 Difference]: With dead ends: 10527 [2024-11-19 22:46:22,862 INFO L226 Difference]: Without dead ends: 10525 [2024-11-19 22:46:22,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:46:22,867 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:22,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10525 states. [2024-11-19 22:46:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10525 to 10525. [2024-11-19 22:46:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10525 states, 10524 states have (on average 1.4819460281261878) internal successors, (15596), 10524 states have internal predecessors, (15596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 15596 transitions. [2024-11-19 22:46:23,024 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 15596 transitions. Word has length 55 [2024-11-19 22:46:23,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:23,024 INFO L471 AbstractCegarLoop]: Abstraction has 10525 states and 15596 transitions. [2024-11-19 22:46:23,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 15596 transitions. [2024-11-19 22:46:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 22:46:23,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:23,026 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] [2024-11-19 22:46:23,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:46:23,026 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:23,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2024-11-19 22:46:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:23,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878634934] [2024-11-19 22:46:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:23,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878634934] [2024-11-19 22:46:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878634934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:23,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133635932] [2024-11-19 22:46:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:23,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:23,071 INFO L87 Difference]: Start difference. First operand 10525 states and 15596 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:23,118 INFO L93 Difference]: Finished difference Result 23387 states and 34588 transitions. [2024-11-19 22:46:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-19 22:46:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:23,140 INFO L225 Difference]: With dead ends: 23387 [2024-11-19 22:46:23,140 INFO L226 Difference]: Without dead ends: 12889 [2024-11-19 22:46:23,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:23,153 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:23,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 309 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12889 states. [2024-11-19 22:46:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12889 to 12887. [2024-11-19 22:46:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12887 states, 12886 states have (on average 1.4715194785038026) internal successors, (18962), 12886 states have internal predecessors, (18962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12887 states to 12887 states and 18962 transitions. [2024-11-19 22:46:23,408 INFO L78 Accepts]: Start accepts. Automaton has 12887 states and 18962 transitions. Word has length 56 [2024-11-19 22:46:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:23,408 INFO L471 AbstractCegarLoop]: Abstraction has 12887 states and 18962 transitions. [2024-11-19 22:46:23,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 12887 states and 18962 transitions. [2024-11-19 22:46:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-19 22:46:23,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:23,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:23,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:46:23,414 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:23,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2024-11-19 22:46:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337121683] [2024-11-19 22:46:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:46:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337121683] [2024-11-19 22:46:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337121683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:46:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361458728] [2024-11-19 22:46:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:23,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:46:23,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:46:23,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:46:23,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:46:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:23,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 22:46:23,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:46:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:24,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:46:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:24,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361458728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:46:24,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:46:24,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 15 [2024-11-19 22:46:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32254120] [2024-11-19 22:46:24,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:46:24,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 22:46:24,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:24,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 22:46:24,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-19 22:46:24,541 INFO L87 Difference]: Start difference. First operand 12887 states and 18962 transitions. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:25,067 INFO L93 Difference]: Finished difference Result 65861 states and 97378 transitions. [2024-11-19 22:46:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 22:46:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-19 22:46:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:25,145 INFO L225 Difference]: With dead ends: 65861 [2024-11-19 22:46:25,145 INFO L226 Difference]: Without dead ends: 53003 [2024-11-19 22:46:25,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2024-11-19 22:46:25,242 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 3719 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3719 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:25,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3719 Valid, 1469 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:46:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53003 states. [2024-11-19 22:46:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53003 to 46455. [2024-11-19 22:46:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46455 states, 46454 states have (on average 1.4639428251603737) internal successors, (68006), 46454 states have internal predecessors, (68006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46455 states to 46455 states and 68006 transitions. [2024-11-19 22:46:26,400 INFO L78 Accepts]: Start accepts. Automaton has 46455 states and 68006 transitions. Word has length 77 [2024-11-19 22:46:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:26,401 INFO L471 AbstractCegarLoop]: Abstraction has 46455 states and 68006 transitions. [2024-11-19 22:46:26,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 46455 states and 68006 transitions. [2024-11-19 22:46:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:26,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:26,405 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:26,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 22:46:26,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 22:46:26,613 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:26,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2024-11-19 22:46:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:26,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148125112] [2024-11-19 22:46:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:26,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:26,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148125112] [2024-11-19 22:46:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148125112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:26,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:26,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107195381] [2024-11-19 22:46:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:26,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:26,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:26,684 INFO L87 Difference]: Start difference. First operand 46455 states and 68006 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:27,058 INFO L93 Difference]: Finished difference Result 110566 states and 161509 transitions. [2024-11-19 22:46:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:27,183 INFO L225 Difference]: With dead ends: 110566 [2024-11-19 22:46:27,183 INFO L226 Difference]: Without dead ends: 73513 [2024-11-19 22:46:27,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:27,233 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:27,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 311 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73513 states. [2024-11-19 22:46:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73513 to 70351. [2024-11-19 22:46:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70351 states, 70350 states have (on average 1.4469793887704336) internal successors, (101795), 70350 states have internal predecessors, (101795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70351 states to 70351 states and 101795 transitions. [2024-11-19 22:46:28,643 INFO L78 Accepts]: Start accepts. Automaton has 70351 states and 101795 transitions. Word has length 78 [2024-11-19 22:46:28,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:28,643 INFO L471 AbstractCegarLoop]: Abstraction has 70351 states and 101795 transitions. [2024-11-19 22:46:28,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 70351 states and 101795 transitions. [2024-11-19 22:46:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:28,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:28,652 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:28,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 22:46:28,652 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:28,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2024-11-19 22:46:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674102287] [2024-11-19 22:46:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:28,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674102287] [2024-11-19 22:46:28,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674102287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:28,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:28,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893793564] [2024-11-19 22:46:28,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:28,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:28,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:28,755 INFO L87 Difference]: Start difference. First operand 70351 states and 101795 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:29,080 INFO L93 Difference]: Finished difference Result 147481 states and 212316 transitions. [2024-11-19 22:46:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:29,518 INFO L225 Difference]: With dead ends: 147481 [2024-11-19 22:46:29,518 INFO L226 Difference]: Without dead ends: 99802 [2024-11-19 22:46:29,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:29,569 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:29,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 330 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99802 states. [2024-11-19 22:46:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99802 to 95580. [2024-11-19 22:46:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95580 states, 95579 states have (on average 1.4259617698448404) internal successors, (136292), 95579 states have internal predecessors, (136292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95580 states to 95580 states and 136292 transitions. [2024-11-19 22:46:30,555 INFO L78 Accepts]: Start accepts. Automaton has 95580 states and 136292 transitions. Word has length 78 [2024-11-19 22:46:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:30,555 INFO L471 AbstractCegarLoop]: Abstraction has 95580 states and 136292 transitions. [2024-11-19 22:46:30,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 95580 states and 136292 transitions. [2024-11-19 22:46:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:30,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:30,567 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:30,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 22:46:30,568 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:30,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:30,568 INFO L85 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2024-11-19 22:46:30,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:30,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39934515] [2024-11-19 22:46:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:31,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39934515] [2024-11-19 22:46:31,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39934515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:31,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:31,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098306842] [2024-11-19 22:46:31,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:31,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:31,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:31,117 INFO L87 Difference]: Start difference. First operand 95580 states and 136292 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:31,580 INFO L93 Difference]: Finished difference Result 156061 states and 221084 transitions. [2024-11-19 22:46:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:31,730 INFO L225 Difference]: With dead ends: 156061 [2024-11-19 22:46:31,730 INFO L226 Difference]: Without dead ends: 99409 [2024-11-19 22:46:31,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:31,792 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:31,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 349 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99409 states. [2024-11-19 22:46:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99409 to 94433. [2024-11-19 22:46:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94433 states, 94432 states have (on average 1.4030942900711623) internal successors, (132497), 94432 states have internal predecessors, (132497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94433 states to 94433 states and 132497 transitions. [2024-11-19 22:46:33,847 INFO L78 Accepts]: Start accepts. Automaton has 94433 states and 132497 transitions. Word has length 78 [2024-11-19 22:46:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:33,847 INFO L471 AbstractCegarLoop]: Abstraction has 94433 states and 132497 transitions. [2024-11-19 22:46:33,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 94433 states and 132497 transitions. [2024-11-19 22:46:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:33,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:33,858 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:33,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 22:46:33,858 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:33,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2024-11-19 22:46:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:33,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680108844] [2024-11-19 22:46:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:46:34,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:34,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680108844] [2024-11-19 22:46:34,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680108844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:34,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:34,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:46:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614242192] [2024-11-19 22:46:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:34,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:46:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:46:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:34,012 INFO L87 Difference]: Start difference. First operand 94433 states and 132497 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:34,518 INFO L93 Difference]: Finished difference Result 232768 states and 329702 transitions. [2024-11-19 22:46:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:46:34,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:34,773 INFO L225 Difference]: With dead ends: 232768 [2024-11-19 22:46:34,774 INFO L226 Difference]: Without dead ends: 187778 [2024-11-19 22:46:35,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:46:35,221 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 792 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:35,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1051 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187778 states. [2024-11-19 22:46:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187778 to 129983. [2024-11-19 22:46:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129983 states, 129982 states have (on average 1.398409010478374) internal successors, (181768), 129982 states have internal predecessors, (181768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129983 states to 129983 states and 181768 transitions. [2024-11-19 22:46:37,689 INFO L78 Accepts]: Start accepts. Automaton has 129983 states and 181768 transitions. Word has length 78 [2024-11-19 22:46:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:37,689 INFO L471 AbstractCegarLoop]: Abstraction has 129983 states and 181768 transitions. [2024-11-19 22:46:37,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 129983 states and 181768 transitions. [2024-11-19 22:46:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:37,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:37,702 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:37,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 22:46:37,702 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:37,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash -542796544, now seen corresponding path program 1 times [2024-11-19 22:46:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:37,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357725332] [2024-11-19 22:46:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 22:46:37,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:37,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357725332] [2024-11-19 22:46:37,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357725332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:37,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:37,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:46:37,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452420414] [2024-11-19 22:46:37,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:37,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:46:37,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:46:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:37,900 INFO L87 Difference]: Start difference. First operand 129983 states and 181768 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:38,504 INFO L93 Difference]: Finished difference Result 265483 states and 375343 transitions. [2024-11-19 22:46:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:46:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:38,848 INFO L225 Difference]: With dead ends: 265483 [2024-11-19 22:46:38,848 INFO L226 Difference]: Without dead ends: 224482 [2024-11-19 22:46:38,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:46:38,939 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 794 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:38,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 995 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:46:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224482 states. [2024-11-19 22:46:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224482 to 168784. [2024-11-19 22:46:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168784 states, 168783 states have (on average 1.3979725446283098) internal successors, (235954), 168783 states have internal predecessors, (235954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168784 states to 168784 states and 235954 transitions. [2024-11-19 22:46:41,870 INFO L78 Accepts]: Start accepts. Automaton has 168784 states and 235954 transitions. Word has length 78 [2024-11-19 22:46:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:41,871 INFO L471 AbstractCegarLoop]: Abstraction has 168784 states and 235954 transitions. [2024-11-19 22:46:41,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 168784 states and 235954 transitions. [2024-11-19 22:46:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:41,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:41,883 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:41,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 22:46:41,883 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:41,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1309904988, now seen corresponding path program 1 times [2024-11-19 22:46:41,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:41,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946130875] [2024-11-19 22:46:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:41,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 22:46:42,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:42,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946130875] [2024-11-19 22:46:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946130875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:46:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269993651] [2024-11-19 22:46:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:42,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:46:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:46:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:42,007 INFO L87 Difference]: Start difference. First operand 168784 states and 235954 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:42,697 INFO L93 Difference]: Finished difference Result 280694 states and 396046 transitions. [2024-11-19 22:46:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:46:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:43,072 INFO L225 Difference]: With dead ends: 280694 [2024-11-19 22:46:43,073 INFO L226 Difference]: Without dead ends: 257812 [2024-11-19 22:46:43,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:46:43,176 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 767 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:43,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1043 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257812 states. [2024-11-19 22:46:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257812 to 190998. [2024-11-19 22:46:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190998 states, 190997 states have (on average 1.3985036414184515) internal successors, (267110), 190997 states have internal predecessors, (267110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190998 states to 190998 states and 267110 transitions. [2024-11-19 22:46:46,726 INFO L78 Accepts]: Start accepts. Automaton has 190998 states and 267110 transitions. Word has length 78 [2024-11-19 22:46:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:46,726 INFO L471 AbstractCegarLoop]: Abstraction has 190998 states and 267110 transitions. [2024-11-19 22:46:46,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 190998 states and 267110 transitions. [2024-11-19 22:46:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:46:46,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:46,731 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:46,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 22:46:46,732 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:46,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 839835956, now seen corresponding path program 1 times [2024-11-19 22:46:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532965288] [2024-11-19 22:46:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:46,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 22:46:46,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:46,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532965288] [2024-11-19 22:46:46,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532965288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:46:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920374121] [2024-11-19 22:46:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:46,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:46:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:46:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:46:46,824 INFO L87 Difference]: Start difference. First operand 190998 states and 267110 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:48,285 INFO L93 Difference]: Finished difference Result 313740 states and 442707 transitions. [2024-11-19 22:46:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:46:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-19 22:46:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:48,854 INFO L225 Difference]: With dead ends: 313740 [2024-11-19 22:46:48,855 INFO L226 Difference]: Without dead ends: 279511 [2024-11-19 22:46:48,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:46:48,976 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 731 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:48,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1115 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279511 states. [2024-11-19 22:46:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279511 to 218839. [2024-11-19 22:46:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218839 states, 218838 states have (on average 1.399409608934463) internal successors, (306244), 218838 states have internal predecessors, (306244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218839 states to 218839 states and 306244 transitions. [2024-11-19 22:46:52,078 INFO L78 Accepts]: Start accepts. Automaton has 218839 states and 306244 transitions. Word has length 78 [2024-11-19 22:46:52,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:46:52,079 INFO L471 AbstractCegarLoop]: Abstraction has 218839 states and 306244 transitions. [2024-11-19 22:46:52,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 218839 states and 306244 transitions. [2024-11-19 22:46:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-19 22:46:52,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:46:52,085 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:46:52,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 22:46:52,085 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:46:52,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:46:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1258059313, now seen corresponding path program 1 times [2024-11-19 22:46:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:46:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270707405] [2024-11-19 22:46:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:46:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:46:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:46:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:46:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:46:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270707405] [2024-11-19 22:46:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270707405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:46:52,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:46:52,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:46:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126410428] [2024-11-19 22:46:52,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:46:52,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:46:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:46:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:46:52,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:52,150 INFO L87 Difference]: Start difference. First operand 218839 states and 306244 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:46:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:46:54,169 INFO L93 Difference]: Finished difference Result 585432 states and 818426 transitions. [2024-11-19 22:46:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:46:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-19 22:46:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:46:55,734 INFO L225 Difference]: With dead ends: 585432 [2024-11-19 22:46:55,735 INFO L226 Difference]: Without dead ends: 377260 [2024-11-19 22:46:55,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:46:55,986 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 87 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:46:55,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 331 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:46:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377260 states. [2024-11-19 22:47:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377260 to 339368. [2024-11-19 22:47:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339368 states, 339367 states have (on average 1.385264330356222) internal successors, (470113), 339367 states have internal predecessors, (470113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:47:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339368 states to 339368 states and 470113 transitions. [2024-11-19 22:47:01,179 INFO L78 Accepts]: Start accepts. Automaton has 339368 states and 470113 transitions. Word has length 81 [2024-11-19 22:47:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:47:01,180 INFO L471 AbstractCegarLoop]: Abstraction has 339368 states and 470113 transitions. [2024-11-19 22:47:01,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:47:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 339368 states and 470113 transitions. [2024-11-19 22:47:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-19 22:47:01,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:47:01,194 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:47:01,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 22:47:01,194 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:47:01,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:47:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1228372865, now seen corresponding path program 1 times [2024-11-19 22:47:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:47:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151621627] [2024-11-19 22:47:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:47:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:47:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:47:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 22:47:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:47:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151621627] [2024-11-19 22:47:01,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151621627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:47:01,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:47:01,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:47:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098326429] [2024-11-19 22:47:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:47:01,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:47:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:47:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:47:01,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:47:01,321 INFO L87 Difference]: Start difference. First operand 339368 states and 470113 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)