./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.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.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 5a6204b8fe11d129da43c7784d578168196f39a9dd912e242b1920607a0dfe2c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:48:41,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:48:41,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:48:41,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:48:41,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:48:41,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:48:41,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:48:41,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:48:41,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:48:41,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:48:41,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:48:41,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:48:41,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:48:41,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:48:41,722 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:48:41,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:48:41,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:48:41,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:48:41,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:48:41,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:48:41,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:48:41,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:48:41,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:48:41,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:48:41,725 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:48:41,725 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:48:41,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:48:41,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:48:41,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:48:41,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:48:41,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:48:41,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:48:41,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:48:41,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:48:41,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:48:41,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:48:41,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:48:41,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:48:41,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:48:41,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:48:41,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:48:41,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:48:41,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6204b8fe11d129da43c7784d578168196f39a9dd912e242b1920607a0dfe2c [2024-10-24 01:48:41,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:48:42,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:48:42,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:48:42,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:48:42,010 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:48:42,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:48:43,481 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:48:43,699 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:48:43,701 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:48:43,717 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9361716/511184d680874a0cbc0faaed98f9ab3d/FLAGdaaaaa1ab [2024-10-24 01:48:44,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d9361716/511184d680874a0cbc0faaed98f9ab3d [2024-10-24 01:48:44,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:48:44,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:48:44,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:48:44,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:48:44,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:48:44,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a39f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44, skipping insertion in model container [2024-10-24 01:48:44,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:48:44,340 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4938,4951] [2024-10-24 01:48:44,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:48:44,373 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:48:44,405 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4938,4951] [2024-10-24 01:48:44,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:48:44,435 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:48:44,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44 WrapperNode [2024-10-24 01:48:44,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:48:44,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:48:44,437 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:48:44,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:48:44,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,506 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 369 [2024-10-24 01:48:44,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:48:44,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:48:44,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:48:44,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:48:44,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,551 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 01:48:44,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:48:44,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:48:44,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:48:44,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:48:44,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (1/1) ... [2024-10-24 01:48:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:48:44,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:48:44,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 01:48:44,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 01:48:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:48:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:48:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:48:44,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:48:44,755 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:48:44,756 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:48:45,142 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-10-24 01:48:45,142 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:48:45,173 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:48:45,173 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:48:45,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:48:45 BoogieIcfgContainer [2024-10-24 01:48:45,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:48:45,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:48:45,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:48:45,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:48:45,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:48:44" (1/3) ... [2024-10-24 01:48:45,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e79f658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:48:45, skipping insertion in model container [2024-10-24 01:48:45,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:44" (2/3) ... [2024-10-24 01:48:45,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e79f658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:48:45, skipping insertion in model container [2024-10-24 01:48:45,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:48:45" (3/3) ... [2024-10-24 01:48:45,187 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-24 01:48:45,203 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:48:45,203 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:48:45,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:48:45,278 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;@730de4c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:48:45,278 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:48:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-24 01:48:45,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:45,297 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] [2024-10-24 01:48:45,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:45,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1629204617, now seen corresponding path program 1 times [2024-10-24 01:48:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:45,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411091176] [2024-10-24 01:48:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411091176] [2024-10-24 01:48:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411091176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:45,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:48:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103655790] [2024-10-24 01:48:45,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:45,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:48:45,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:48:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:45,757 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 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 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:45,816 INFO L93 Difference]: Finished difference Result 179 states and 288 transitions. [2024-10-24 01:48:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:48:45,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-10-24 01:48:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:45,829 INFO L225 Difference]: With dead ends: 179 [2024-10-24 01:48:45,829 INFO L226 Difference]: Without dead ends: 121 [2024-10-24 01:48:45,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:45,850 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 83 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:45,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-24 01:48:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-10-24 01:48:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 118 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2024-10-24 01:48:45,915 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 47 [2024-10-24 01:48:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:45,916 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2024-10-24 01:48:45,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2024-10-24 01:48:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-24 01:48:45,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:45,918 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] [2024-10-24 01:48:45,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:48:45,920 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:45,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1771605490, now seen corresponding path program 1 times [2024-10-24 01:48:45,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053795556] [2024-10-24 01:48:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053795556] [2024-10-24 01:48:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053795556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:48:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275452499] [2024-10-24 01:48:46,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:46,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:48:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:48:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:46,101 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. 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) [2024-10-24 01:48:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:46,135 INFO L93 Difference]: Finished difference Result 291 states and 446 transitions. [2024-10-24 01:48:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:48:46,136 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 [2024-10-24 01:48:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:46,140 INFO L225 Difference]: With dead ends: 291 [2024-10-24 01:48:46,140 INFO L226 Difference]: Without dead ends: 197 [2024-10-24 01:48:46,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:46,142 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 62 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:46,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 229 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-24 01:48:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2024-10-24 01:48:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.5154639175257731) internal successors, (294), 194 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 294 transitions. [2024-10-24 01:48:46,169 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 294 transitions. Word has length 48 [2024-10-24 01:48:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:46,170 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 294 transitions. [2024-10-24 01:48:46,170 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) [2024-10-24 01:48:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 294 transitions. [2024-10-24 01:48:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:48:46,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:46,172 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] [2024-10-24 01:48:46,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:48:46,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:46,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash -445382270, now seen corresponding path program 1 times [2024-10-24 01:48:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933108866] [2024-10-24 01:48:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:46,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:46,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933108866] [2024-10-24 01:48:46,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933108866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:46,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:46,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:48:46,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239015221] [2024-10-24 01:48:46,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:46,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:48:46,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:48:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:46,281 INFO L87 Difference]: Start difference. First operand 195 states and 294 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) [2024-10-24 01:48:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:46,315 INFO L93 Difference]: Finished difference Result 503 states and 780 transitions. [2024-10-24 01:48:46,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:48:46,317 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 [2024-10-24 01:48:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:46,320 INFO L225 Difference]: With dead ends: 503 [2024-10-24 01:48:46,320 INFO L226 Difference]: Without dead ends: 333 [2024-10-24 01:48:46,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:46,324 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 57 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:46,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 225 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-10-24 01:48:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2024-10-24 01:48:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.5333333333333334) internal successors, (506), 330 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 506 transitions. [2024-10-24 01:48:46,359 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 506 transitions. Word has length 49 [2024-10-24 01:48:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:46,359 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 506 transitions. [2024-10-24 01:48:46,359 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) [2024-10-24 01:48:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 506 transitions. [2024-10-24 01:48:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 01:48:46,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:46,361 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] [2024-10-24 01:48:46,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:48:46,364 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:46,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1984957637, now seen corresponding path program 1 times [2024-10-24 01:48:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39832958] [2024-10-24 01:48:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:46,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39832958] [2024-10-24 01:48:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39832958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:48:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304467067] [2024-10-24 01:48:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:46,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:48:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:48:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:48:46,559 INFO L87 Difference]: Start difference. First operand 331 states and 506 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-10-24 01:48:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:46,784 INFO L93 Difference]: Finished difference Result 2779 states and 4354 transitions. [2024-10-24 01:48:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 01:48:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 [2024-10-24 01:48:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:46,795 INFO L225 Difference]: With dead ends: 2779 [2024-10-24 01:48:46,796 INFO L226 Difference]: Without dead ends: 2473 [2024-10-24 01:48:46,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:48:46,804 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 697 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:46,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1113 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:48:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-10-24 01:48:46,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 635. [2024-10-24 01:48:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.5299684542586751) internal successors, (970), 634 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 970 transitions. [2024-10-24 01:48:46,887 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 970 transitions. Word has length 50 [2024-10-24 01:48:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:46,888 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 970 transitions. [2024-10-24 01:48:46,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-10-24 01:48:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 970 transitions. [2024-10-24 01:48:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:48:46,892 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:46,892 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] [2024-10-24 01:48:46,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:48:46,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:46,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash -322009632, now seen corresponding path program 1 times [2024-10-24 01:48:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:46,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877960373] [2024-10-24 01:48:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:47,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877960373] [2024-10-24 01:48:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877960373] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:47,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:48:47,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143797372] [2024-10-24 01:48:47,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:47,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:48:47,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:48:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:48:47,143 INFO L87 Difference]: Start difference. First operand 635 states and 970 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) [2024-10-24 01:48:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:47,248 INFO L93 Difference]: Finished difference Result 1247 states and 1916 transitions. [2024-10-24 01:48:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:48:47,249 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 [2024-10-24 01:48:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:47,252 INFO L225 Difference]: With dead ends: 1247 [2024-10-24 01:48:47,252 INFO L226 Difference]: Without dead ends: 637 [2024-10-24 01:48:47,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:48:47,254 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 116 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:47,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 340 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-10-24 01:48:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 635. [2024-10-24 01:48:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.5173501577287065) internal successors, (962), 634 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 962 transitions. [2024-10-24 01:48:47,267 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 962 transitions. Word has length 52 [2024-10-24 01:48:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:47,269 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 962 transitions. [2024-10-24 01:48:47,270 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) [2024-10-24 01:48:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 962 transitions. [2024-10-24 01:48:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:48:47,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:47,271 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] [2024-10-24 01:48:47,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:48:47,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:47,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash -343012287, now seen corresponding path program 1 times [2024-10-24 01:48:47,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:47,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202210199] [2024-10-24 01:48:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:47,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202210199] [2024-10-24 01:48:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202210199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:48:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588709183] [2024-10-24 01:48:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:47,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:48:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:48:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:47,376 INFO L87 Difference]: Start difference. First operand 635 states and 962 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-10-24 01:48:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:47,403 INFO L93 Difference]: Finished difference Result 1767 states and 2684 transitions. [2024-10-24 01:48:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:48:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 [2024-10-24 01:48:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:47,408 INFO L225 Difference]: With dead ends: 1767 [2024-10-24 01:48:47,408 INFO L226 Difference]: Without dead ends: 1157 [2024-10-24 01:48:47,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:47,410 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 47 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:47,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-10-24 01:48:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1139. [2024-10-24 01:48:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4850615114235501) internal successors, (1690), 1138 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1690 transitions. [2024-10-24 01:48:47,436 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1690 transitions. Word has length 52 [2024-10-24 01:48:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:47,437 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1690 transitions. [2024-10-24 01:48:47,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2024-10-24 01:48:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1690 transitions. [2024-10-24 01:48:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:48:47,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:47,438 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] [2024-10-24 01:48:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:48:47,441 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1394273389, now seen corresponding path program 1 times [2024-10-24 01:48:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055577456] [2024-10-24 01:48:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:47,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:47,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055577456] [2024-10-24 01:48:47,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055577456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:47,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:47,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:48:47,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752856702] [2024-10-24 01:48:47,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:47,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:48:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:47,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:48:47,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:48:47,581 INFO L87 Difference]: Start difference. First operand 1139 states and 1690 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-10-24 01:48:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:47,661 INFO L93 Difference]: Finished difference Result 2253 states and 3355 transitions. [2024-10-24 01:48:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:48:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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 [2024-10-24 01:48:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:47,666 INFO L225 Difference]: With dead ends: 2253 [2024-10-24 01:48:47,666 INFO L226 Difference]: Without dead ends: 1139 [2024-10-24 01:48:47,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:48:47,668 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 258 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:47,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 84 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:48:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-10-24 01:48:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2024-10-24 01:48:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4710017574692442) internal successors, (1674), 1138 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1674 transitions. [2024-10-24 01:48:47,691 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1674 transitions. Word has length 53 [2024-10-24 01:48:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:47,692 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1674 transitions. [2024-10-24 01:48:47,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-10-24 01:48:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1674 transitions. [2024-10-24 01:48:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:48:47,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:47,695 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] [2024-10-24 01:48:47,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:48:47,695 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:47,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash -528741000, now seen corresponding path program 1 times [2024-10-24 01:48:47,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:47,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790126652] [2024-10-24 01:48:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:47,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:47,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790126652] [2024-10-24 01:48:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790126652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:47,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:47,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:48:47,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921710471] [2024-10-24 01:48:47,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:47,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:48:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:47,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:48:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:48:47,808 INFO L87 Difference]: Start difference. First operand 1139 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-10-24 01:48:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:47,894 INFO L93 Difference]: Finished difference Result 2253 states and 3323 transitions. [2024-10-24 01:48:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:48:47,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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 [2024-10-24 01:48:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:47,899 INFO L225 Difference]: With dead ends: 2253 [2024-10-24 01:48:47,900 INFO L226 Difference]: Without dead ends: 1139 [2024-10-24 01:48:47,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:48:47,902 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 242 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:47,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 92 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:48:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-10-24 01:48:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2024-10-24 01:48:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4569420035149385) internal successors, (1658), 1138 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1658 transitions. [2024-10-24 01:48:47,932 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1658 transitions. Word has length 53 [2024-10-24 01:48:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:47,932 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1658 transitions. [2024-10-24 01:48:47,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-10-24 01:48:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1658 transitions. [2024-10-24 01:48:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:48:47,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:47,934 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] [2024-10-24 01:48:47,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:48:47,934 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:47,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1058031501, now seen corresponding path program 1 times [2024-10-24 01:48:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591913488] [2024-10-24 01:48:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:47,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:48,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:48,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591913488] [2024-10-24 01:48:48,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591913488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:48,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:48,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:48:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927015519] [2024-10-24 01:48:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:48,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:48:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:48:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:48:48,061 INFO L87 Difference]: Start difference. First operand 1139 states and 1658 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-10-24 01:48:48,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:48,134 INFO L93 Difference]: Finished difference Result 2253 states and 3291 transitions. [2024-10-24 01:48:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:48:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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 [2024-10-24 01:48:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:48,142 INFO L225 Difference]: With dead ends: 2253 [2024-10-24 01:48:48,142 INFO L226 Difference]: Without dead ends: 1139 [2024-10-24 01:48:48,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:48:48,144 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 265 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:48,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 76 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-10-24 01:48:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2024-10-24 01:48:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.4428822495606326) internal successors, (1642), 1138 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1642 transitions. [2024-10-24 01:48:48,170 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1642 transitions. Word has length 53 [2024-10-24 01:48:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:48,170 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1642 transitions. [2024-10-24 01:48:48,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2024-10-24 01:48:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1642 transitions. [2024-10-24 01:48:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:48:48,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:48,172 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] [2024-10-24 01:48:48,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:48:48,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:48,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash -929946194, now seen corresponding path program 1 times [2024-10-24 01:48:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557641847] [2024-10-24 01:48:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557641847] [2024-10-24 01:48:48,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557641847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:48,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:48,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:48:48,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757298955] [2024-10-24 01:48:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:48,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:48:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:48:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:48:48,392 INFO L87 Difference]: Start difference. First operand 1139 states and 1642 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-10-24 01:48:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:48,433 INFO L93 Difference]: Finished difference Result 1173 states and 1691 transitions. [2024-10-24 01:48:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:48:48,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 [2024-10-24 01:48:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:48,437 INFO L225 Difference]: With dead ends: 1173 [2024-10-24 01:48:48,438 INFO L226 Difference]: Without dead ends: 1171 [2024-10-24 01:48:48,438 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 [2024-10-24 01:48:48,439 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:48,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-10-24 01:48:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2024-10-24 01:48:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.423931623931624) internal successors, (1666), 1170 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1666 transitions. [2024-10-24 01:48:48,458 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1666 transitions. Word has length 53 [2024-10-24 01:48:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:48,459 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1666 transitions. [2024-10-24 01:48:48,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2024-10-24 01:48:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1666 transitions. [2024-10-24 01:48:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:48:48,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:48,460 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] [2024-10-24 01:48:48,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:48:48,460 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:48,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1102304960, now seen corresponding path program 1 times [2024-10-24 01:48:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159023521] [2024-10-24 01:48:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159023521] [2024-10-24 01:48:48,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159023521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:48,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:48:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999876073] [2024-10-24 01:48:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:48,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:48:48,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:48:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:48,510 INFO L87 Difference]: Start difference. First operand 1171 states and 1666 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2024-10-24 01:48:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:48,528 INFO L93 Difference]: Finished difference Result 2298 states and 3304 transitions. [2024-10-24 01:48:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:48:48,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 [2024-10-24 01:48:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:48,534 INFO L225 Difference]: With dead ends: 2298 [2024-10-24 01:48:48,534 INFO L226 Difference]: Without dead ends: 1655 [2024-10-24 01:48:48,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:48,536 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 66 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:48,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 232 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2024-10-24 01:48:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1653. [2024-10-24 01:48:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 1.4164648910411621) internal successors, (2340), 1652 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2340 transitions. [2024-10-24 01:48:48,563 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2340 transitions. Word has length 53 [2024-10-24 01:48:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:48,563 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2340 transitions. [2024-10-24 01:48:48,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2024-10-24 01:48:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2340 transitions. [2024-10-24 01:48:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:48:48,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:48,567 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:48:48,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:48:48,567 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:48,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash -363391418, now seen corresponding path program 1 times [2024-10-24 01:48:48,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:48,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617779087] [2024-10-24 01:48:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:48:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617779087] [2024-10-24 01:48:48,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617779087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:48,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:48,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:48:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702351520] [2024-10-24 01:48:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:48,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:48:48,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:48:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:48:48,705 INFO L87 Difference]: Start difference. First operand 1653 states and 2340 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:48,827 INFO L93 Difference]: Finished difference Result 8471 states and 12021 transitions. [2024-10-24 01:48:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:48:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 01:48:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:48,849 INFO L225 Difference]: With dead ends: 8471 [2024-10-24 01:48:48,849 INFO L226 Difference]: Without dead ends: 6845 [2024-10-24 01:48:48,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:48:48,856 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 489 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:48,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 546 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:48:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2024-10-24 01:48:48,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 3277. [2024-10-24 01:48:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3276 states have (on average 1.4126984126984128) internal successors, (4628), 3276 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4628 transitions. [2024-10-24 01:48:48,983 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4628 transitions. Word has length 76 [2024-10-24 01:48:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:48,983 INFO L471 AbstractCegarLoop]: Abstraction has 3277 states and 4628 transitions. [2024-10-24 01:48:48,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4628 transitions. [2024-10-24 01:48:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:48:48,984 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:48,984 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:48:48,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:48:48,985 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:48,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1517337524, now seen corresponding path program 1 times [2024-10-24 01:48:48,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:48,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116488703] [2024-10-24 01:48:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:48,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 01:48:49,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:49,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116488703] [2024-10-24 01:48:49,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116488703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:49,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:48:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682908000] [2024-10-24 01:48:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:49,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:48:49,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:48:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:48:49,121 INFO L87 Difference]: Start difference. First operand 3277 states and 4628 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:49,247 INFO L93 Difference]: Finished difference Result 10095 states and 14309 transitions. [2024-10-24 01:48:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:48:49,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 01:48:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:49,281 INFO L225 Difference]: With dead ends: 10095 [2024-10-24 01:48:49,284 INFO L226 Difference]: Without dead ends: 8469 [2024-10-24 01:48:49,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:48:49,291 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 472 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:49,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 575 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:48:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2024-10-24 01:48:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 5717. [2024-10-24 01:48:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 5716 states have (on average 1.4065780265920225) internal successors, (8040), 5716 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 8040 transitions. [2024-10-24 01:48:49,444 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 8040 transitions. Word has length 76 [2024-10-24 01:48:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:49,444 INFO L471 AbstractCegarLoop]: Abstraction has 5717 states and 8040 transitions. [2024-10-24 01:48:49,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 8040 transitions. [2024-10-24 01:48:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:48:49,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:49,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:48:49,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:48:49,450 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:49,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:49,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1221292096, now seen corresponding path program 1 times [2024-10-24 01:48:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798933465] [2024-10-24 01:48:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:49,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 01:48:49,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:49,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798933465] [2024-10-24 01:48:49,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798933465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:49,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:49,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:48:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035999844] [2024-10-24 01:48:49,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:49,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:48:49,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:48:49,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:48:49,578 INFO L87 Difference]: Start difference. First operand 5717 states and 8040 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:49,683 INFO L93 Difference]: Finished difference Result 11719 states and 16597 transitions. [2024-10-24 01:48:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:48:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 76 [2024-10-24 01:48:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:49,702 INFO L225 Difference]: With dead ends: 11719 [2024-10-24 01:48:49,702 INFO L226 Difference]: Without dead ends: 10093 [2024-10-24 01:48:49,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:48:49,709 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 441 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:49,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 643 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2024-10-24 01:48:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 7341. [2024-10-24 01:48:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7341 states, 7340 states have (on average 1.40708446866485) internal successors, (10328), 7340 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7341 states to 7341 states and 10328 transitions. [2024-10-24 01:48:49,899 INFO L78 Accepts]: Start accepts. Automaton has 7341 states and 10328 transitions. Word has length 76 [2024-10-24 01:48:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:49,900 INFO L471 AbstractCegarLoop]: Abstraction has 7341 states and 10328 transitions. [2024-10-24 01:48:49,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7341 states and 10328 transitions. [2024-10-24 01:48:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:48:49,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:49,903 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] [2024-10-24 01:48:49,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:48:49,903 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:49,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1706727076, now seen corresponding path program 1 times [2024-10-24 01:48:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962018364] [2024-10-24 01:48:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:48:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962018364] [2024-10-24 01:48:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962018364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:50,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:48:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121169393] [2024-10-24 01:48:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:50,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:48:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:48:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:48:50,052 INFO L87 Difference]: Start difference. First operand 7341 states and 10328 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) [2024-10-24 01:48:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:50,174 INFO L93 Difference]: Finished difference Result 12335 states and 17493 transitions. [2024-10-24 01:48:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:48:50,175 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 77 [2024-10-24 01:48:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:50,194 INFO L225 Difference]: With dead ends: 12335 [2024-10-24 01:48:50,194 INFO L226 Difference]: Without dead ends: 11213 [2024-10-24 01:48:50,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:48:50,200 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 432 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:50,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 600 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:48:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2024-10-24 01:48:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 8461. [2024-10-24 01:48:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8461 states, 8460 states have (on average 1.4099290780141844) internal successors, (11928), 8460 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 11928 transitions. [2024-10-24 01:48:50,379 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 11928 transitions. Word has length 77 [2024-10-24 01:48:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:50,380 INFO L471 AbstractCegarLoop]: Abstraction has 8461 states and 11928 transitions. [2024-10-24 01:48:50,381 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) [2024-10-24 01:48:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 11928 transitions. [2024-10-24 01:48:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:48:50,383 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:50,383 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:48:50,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:48:50,383 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:50,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2067346209, now seen corresponding path program 1 times [2024-10-24 01:48:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:50,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549174257] [2024-10-24 01:48:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549174257] [2024-10-24 01:48:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549174257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:48:50,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:48:50,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:48:50,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758835418] [2024-10-24 01:48:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:48:50,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:48:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:48:50,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:50,479 INFO L87 Difference]: Start difference. First operand 8461 states and 11928 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) [2024-10-24 01:48:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:48:50,523 INFO L93 Difference]: Finished difference Result 14657 states and 20768 transitions. [2024-10-24 01:48:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:48:50,524 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 [2024-10-24 01:48:50,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:48:50,535 INFO L225 Difference]: With dead ends: 14657 [2024-10-24 01:48:50,536 INFO L226 Difference]: Without dead ends: 6223 [2024-10-24 01:48:50,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:48:50,547 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 48 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:48:50,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:48:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6223 states. [2024-10-24 01:48:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6223 to 6221. [2024-10-24 01:48:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 6220 states have (on average 1.4110932475884244) internal successors, (8777), 6220 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:48:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 8777 transitions. [2024-10-24 01:48:50,631 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 8777 transitions. Word has length 78 [2024-10-24 01:48:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:48:50,632 INFO L471 AbstractCegarLoop]: Abstraction has 6221 states and 8777 transitions. [2024-10-24 01:48:50,632 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) [2024-10-24 01:48:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 8777 transitions. [2024-10-24 01:48:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:48:50,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:48:50,634 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, 1] [2024-10-24 01:48:50,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:48:50,634 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:48:50,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:48:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 652706646, now seen corresponding path program 1 times [2024-10-24 01:48:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:48:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294455709] [2024-10-24 01:48:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:48:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:51,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:48:51,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294455709] [2024-10-24 01:48:51,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294455709] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:48:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686154623] [2024-10-24 01:48:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:48:51,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:48:51,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:48:51,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:48:51,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:48:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:48:51,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 01:48:51,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:48:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:52,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:48:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:48:52,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686154623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:48:52,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:48:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 27 [2024-10-24 01:48:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619732156] [2024-10-24 01:48:52,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:48:52,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 01:48:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:48:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 01:48:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2024-10-24 01:48:52,911 INFO L87 Difference]: Start difference. First operand 6221 states and 8777 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 27 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:49:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:49:02,681 INFO L93 Difference]: Finished difference Result 118850 states and 165178 transitions. [2024-10-24 01:49:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2024-10-24 01:49:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 27 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-24 01:49:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:49:02,946 INFO L225 Difference]: With dead ends: 118850 [2024-10-24 01:49:02,947 INFO L226 Difference]: Without dead ends: 112658 [2024-10-24 01:49:03,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25974 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=7534, Invalid=56222, Unknown=0, NotChecked=0, Total=63756 [2024-10-24 01:49:03,022 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 5293 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5293 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:49:03,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5293 Valid, 2080 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 01:49:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112658 states. [2024-10-24 01:49:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112658 to 69942. [2024-10-24 01:49:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69942 states, 69941 states have (on average 1.3927167183769178) internal successors, (97408), 69941 states have internal predecessors, (97408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:49:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69942 states to 69942 states and 97408 transitions. [2024-10-24 01:49:04,596 INFO L78 Accepts]: Start accepts. Automaton has 69942 states and 97408 transitions. Word has length 78 [2024-10-24 01:49:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:49:04,597 INFO L471 AbstractCegarLoop]: Abstraction has 69942 states and 97408 transitions. [2024-10-24 01:49:04,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 27 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:49:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 69942 states and 97408 transitions. [2024-10-24 01:49:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 01:49:04,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:49:04,606 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] [2024-10-24 01:49:04,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:49:04,807 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,SelfDestructingSolverStorable16 [2024-10-24 01:49:04,807 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:49:04,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:49:04,808 INFO L85 PathProgramCache]: Analyzing trace with hash 282670764, now seen corresponding path program 1 times [2024-10-24 01:49:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:49:04,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343644286] [2024-10-24 01:49:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:49:04,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:49:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:49:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:49:05,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:49:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343644286] [2024-10-24 01:49:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343644286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:49:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37202730] [2024-10-24 01:49:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:49:05,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:49:05,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:49:05,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:49:05,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:49:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:49:05,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 01:49:05,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:49:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:49:06,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:49:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:49:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37202730] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:49:07,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:49:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2024-10-24 01:49:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338105357] [2024-10-24 01:49:07,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:49:07,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 01:49:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:49:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 01:49:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2024-10-24 01:49:07,474 INFO L87 Difference]: Start difference. First operand 69942 states and 97408 transitions. Second operand has 29 states, 29 states have (on average 7.068965517241379) internal successors, (205), 28 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:49:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:49:14,169 INFO L93 Difference]: Finished difference Result 299845 states and 414369 transitions. [2024-10-24 01:49:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-10-24 01:49:14,170 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.068965517241379) internal successors, (205), 28 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-24 01:49:14,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:49:14,769 INFO L225 Difference]: With dead ends: 299845 [2024-10-24 01:49:14,769 INFO L226 Difference]: Without dead ends: 230037 [2024-10-24 01:49:14,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6577 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3015, Invalid=16725, Unknown=0, NotChecked=0, Total=19740 [2024-10-24 01:49:14,860 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 4771 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:49:14,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4771 Valid, 1996 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 01:49:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230037 states. [2024-10-24 01:49:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230037 to 159636. [2024-10-24 01:49:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159636 states, 159635 states have (on average 1.385122310270304) internal successors, (221114), 159635 states have internal predecessors, (221114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:49:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159636 states to 159636 states and 221114 transitions. [2024-10-24 01:49:17,950 INFO L78 Accepts]: Start accepts. Automaton has 159636 states and 221114 transitions. Word has length 79 [2024-10-24 01:49:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:49:17,951 INFO L471 AbstractCegarLoop]: Abstraction has 159636 states and 221114 transitions. [2024-10-24 01:49:17,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.068965517241379) internal successors, (205), 28 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:49:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 159636 states and 221114 transitions. [2024-10-24 01:49:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 01:49:17,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:49:17,955 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] [2024-10-24 01:49:17,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 01:49:18,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 01:49:18,156 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:49:18,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:49:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash -777962760, now seen corresponding path program 1 times [2024-10-24 01:49:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:49:18,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315695864] [2024-10-24 01:49:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:49:18,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:49:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:49:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:49:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:49:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315695864] [2024-10-24 01:49:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315695864] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:49:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173574341] [2024-10-24 01:49:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:49:18,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:49:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:49:18,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:49:18,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:49:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:49:18,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 01:49:18,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:49:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:49:20,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:49:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:49:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173574341] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:49:21,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:49:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 17] total 39 [2024-10-24 01:49:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060408613] [2024-10-24 01:49:21,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:49:21,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-24 01:49:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:49:21,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-24 01:49:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2024-10-24 01:49:21,952 INFO L87 Difference]: Start difference. First operand 159636 states and 221114 transitions. Second operand has 40 states, 40 states have (on average 5.45) internal successors, (218), 39 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)