./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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17ba764d4851428799f2c4794a4662e2753aae472d291b23839dac79bbfbab6d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:22:48,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:22:48,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:22:48,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:22:48,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:22:48,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:22:48,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:22:48,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:22:48,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:22:48,274 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:22:48,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:22:48,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:22:48,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:22:48,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:22:48,278 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:22:48,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:22:48,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:22:48,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:22:48,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:22:48,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:22:48,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:22:48,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:22:48,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:22:48,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:22:48,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:22:48,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:22:48,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:22:48,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:22:48,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:22:48,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:22:48,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:22:48,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:22:48,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:22:48,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:22:48,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:22:48,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:22:48,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:22:48,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:22:48,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:22:48,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:22:48,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:22:48,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:22:48,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17ba764d4851428799f2c4794a4662e2753aae472d291b23839dac79bbfbab6d [2024-10-24 01:22:48,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:22:48,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:22:48,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:22:48,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:22:48,553 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:22:48,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2024-10-24 01:22:49,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:22:50,149 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:22:50,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2024-10-24 01:22:50,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2efd67a/0b4995997fe844ba9c08e82e532fb672/FLAGc975c159a [2024-10-24 01:22:50,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d2efd67a/0b4995997fe844ba9c08e82e532fb672 [2024-10-24 01:22:50,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:22:50,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:22:50,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:22:50,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:22:50,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:22:50,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:50,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50304516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50, skipping insertion in model container [2024-10-24 01:22:50,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:50,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:22:50,901 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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c[9392,9405] [2024-10-24 01:22:50,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:22:50,920 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:22:50,958 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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c[9392,9405] [2024-10-24 01:22:50,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:22:50,983 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:22:50,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50 WrapperNode [2024-10-24 01:22:50,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:22:50,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:22:50,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:22:50,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:22:50,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,032 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 315 [2024-10-24 01:22:51,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:22:51,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:22:51,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:22:51,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:22:51,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,075 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 01:22:51,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:22:51,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:22:51,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:22:51,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:22:51,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (1/1) ... [2024-10-24 01:22:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:22:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:22:51,140 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 01:22:51,146 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 01:22:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:22:51,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:22:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:22:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:22:51,291 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:22:51,296 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:22:51,764 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-10-24 01:22:51,766 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:22:51,806 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:22:51,806 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:22:51,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:22:51 BoogieIcfgContainer [2024-10-24 01:22:51,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:22:51,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:22:51,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:22:51,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:22:51,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:22:50" (1/3) ... [2024-10-24 01:22:51,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b75f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:22:51, skipping insertion in model container [2024-10-24 01:22:51,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:50" (2/3) ... [2024-10-24 01:22:51,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b75f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:22:51, skipping insertion in model container [2024-10-24 01:22:51,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:22:51" (3/3) ... [2024-10-24 01:22:51,816 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2024-10-24 01:22:51,831 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:22:51,832 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:22:51,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:22:51,916 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;@65551bb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:22:51,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:22:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 0 states have call successors, (0), 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 01:22:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 01:22:51,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:51,931 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] [2024-10-24 01:22:51,932 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:51,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash -408434164, now seen corresponding path program 1 times [2024-10-24 01:22:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:51,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437420448] [2024-10-24 01:22:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:52,192 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 01:22:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:52,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437420448] [2024-10-24 01:22:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437420448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:52,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:52,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:22:52,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978458207] [2024-10-24 01:22:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:52,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:22:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:22:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:22:52,234 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:22:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:52,268 INFO L93 Difference]: Finished difference Result 131 states and 222 transitions. [2024-10-24 01:22:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:22:52,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-24 01:22:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:52,280 INFO L225 Difference]: With dead ends: 131 [2024-10-24 01:22:52,280 INFO L226 Difference]: Without dead ends: 77 [2024-10-24 01:22:52,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:22:52,286 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:52,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-24 01:22:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-24 01:22:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.736842105263158) internal successors, (132), 76 states have internal predecessors, (132), 0 states have call successors, (0), 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 01:22:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 132 transitions. [2024-10-24 01:22:52,322 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 132 transitions. Word has length 26 [2024-10-24 01:22:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:52,322 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 132 transitions. [2024-10-24 01:22:52,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:22:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 132 transitions. [2024-10-24 01:22:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 01:22:52,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:52,325 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] [2024-10-24 01:22:52,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:22:52,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:52,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2081094798, now seen corresponding path program 1 times [2024-10-24 01:22:52,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3751549] [2024-10-24 01:22:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:52,582 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 01:22:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3751549] [2024-10-24 01:22:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3751549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:52,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:22:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511699838] [2024-10-24 01:22:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:52,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:22:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:22:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:22:52,588 INFO L87 Difference]: Start difference. First operand 77 states and 132 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:22:52,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:52,684 INFO L93 Difference]: Finished difference Result 178 states and 295 transitions. [2024-10-24 01:22:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:22:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-24 01:22:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:52,687 INFO L225 Difference]: With dead ends: 178 [2024-10-24 01:22:52,687 INFO L226 Difference]: Without dead ends: 126 [2024-10-24 01:22:52,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:22:52,690 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 79 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:52,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:22:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-24 01:22:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 77. [2024-10-24 01:22:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 0 states have call successors, (0), 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 01:22:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2024-10-24 01:22:52,706 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 26 [2024-10-24 01:22:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:52,706 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2024-10-24 01:22:52,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:22:52,708 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2024-10-24 01:22:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:22:52,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:52,709 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 01:22:52,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:22:52,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:52,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1094162009, now seen corresponding path program 1 times [2024-10-24 01:22:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:52,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513576497] [2024-10-24 01:22:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:52,848 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 01:22:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513576497] [2024-10-24 01:22:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513576497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:52,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:52,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:22:52,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195196701] [2024-10-24 01:22:52,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:52,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:22:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:22:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:22:52,853 INFO L87 Difference]: Start difference. First operand 77 states and 108 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 01:22:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:52,888 INFO L93 Difference]: Finished difference Result 167 states and 254 transitions. [2024-10-24 01:22:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:22:52,893 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 01:22:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:52,895 INFO L225 Difference]: With dead ends: 167 [2024-10-24 01:22:52,897 INFO L226 Difference]: Without dead ends: 118 [2024-10-24 01:22:52,898 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 01:22:52,899 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 229 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 01:22:52,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 229 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-24 01:22:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-10-24 01:22:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 115 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:22:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2024-10-24 01:22:52,914 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 49 [2024-10-24 01:22:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:52,914 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2024-10-24 01:22:52,914 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 01:22:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2024-10-24 01:22:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:22:52,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:52,917 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 01:22:52,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:22:52,918 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:52,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:52,922 INFO L85 PathProgramCache]: Analyzing trace with hash -114750088, now seen corresponding path program 1 times [2024-10-24 01:22:52,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:52,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032830584] [2024-10-24 01:22:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:53,039 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 01:22:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032830584] [2024-10-24 01:22:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032830584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:53,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:53,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:22:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470218767] [2024-10-24 01:22:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:53,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:22:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:22:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:22:53,043 INFO L87 Difference]: Start difference. First operand 116 states and 172 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 01:22:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:53,073 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2024-10-24 01:22:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:22:53,074 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 01:22:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:53,076 INFO L225 Difference]: With dead ends: 276 [2024-10-24 01:22:53,076 INFO L226 Difference]: Without dead ends: 188 [2024-10-24 01:22:53,076 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 01:22:53,077 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 226 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 01:22:53,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-10-24 01:22:53,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2024-10-24 01:22:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 0 states have call successors, (0), 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 01:22:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 285 transitions. [2024-10-24 01:22:53,090 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 285 transitions. Word has length 49 [2024-10-24 01:22:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:53,091 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 285 transitions. [2024-10-24 01:22:53,091 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 01:22:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 285 transitions. [2024-10-24 01:22:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:22:53,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:53,092 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 01:22:53,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:22:53,092 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:53,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash 796453911, now seen corresponding path program 1 times [2024-10-24 01:22:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:53,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989990243] [2024-10-24 01:22:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:53,279 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 01:22:53,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989990243] [2024-10-24 01:22:53,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989990243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:53,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:53,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:22:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288520106] [2024-10-24 01:22:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:53,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:22:53,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:53,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:22:53,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:22:53,282 INFO L87 Difference]: Start difference. First operand 186 states and 285 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 01:22:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:53,417 INFO L93 Difference]: Finished difference Result 976 states and 1570 transitions. [2024-10-24 01:22:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:22:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 01:22:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:53,421 INFO L225 Difference]: With dead ends: 976 [2024-10-24 01:22:53,421 INFO L226 Difference]: Without dead ends: 818 [2024-10-24 01:22:53,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:22:53,424 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 733 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:53,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 660 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:22:53,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-24 01:22:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 342. [2024-10-24 01:22:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.563049853372434) internal successors, (533), 341 states have internal predecessors, (533), 0 states have call successors, (0), 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 01:22:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 533 transitions. [2024-10-24 01:22:53,462 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 533 transitions. Word has length 49 [2024-10-24 01:22:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:53,463 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 533 transitions. [2024-10-24 01:22:53,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 01:22:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 533 transitions. [2024-10-24 01:22:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 01:22:53,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:53,465 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 01:22:53,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:22:53,465 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:53,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1092763391, now seen corresponding path program 1 times [2024-10-24 01:22:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972962506] [2024-10-24 01:22:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:53,712 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 01:22:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972962506] [2024-10-24 01:22:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972962506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:53,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:53,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:22:53,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303156563] [2024-10-24 01:22:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:53,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:22:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:22:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:22:53,714 INFO L87 Difference]: Start difference. First operand 342 states and 533 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 01:22:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:53,758 INFO L93 Difference]: Finished difference Result 360 states and 558 transitions. [2024-10-24 01:22:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:22:53,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 01:22:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:53,767 INFO L225 Difference]: With dead ends: 360 [2024-10-24 01:22:53,767 INFO L226 Difference]: Without dead ends: 358 [2024-10-24 01:22:53,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:22:53,772 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:53,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-10-24 01:22:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-10-24 01:22:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5378151260504203) internal successors, (549), 357 states have internal predecessors, (549), 0 states have call successors, (0), 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 01:22:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 549 transitions. [2024-10-24 01:22:53,787 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 549 transitions. Word has length 50 [2024-10-24 01:22:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:53,787 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 549 transitions. [2024-10-24 01:22:53,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 01:22:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 549 transitions. [2024-10-24 01:22:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:22:53,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:53,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:22:53,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:22:53,789 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:53,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:53,790 INFO L85 PathProgramCache]: Analyzing trace with hash 485103743, now seen corresponding path program 1 times [2024-10-24 01:22:53,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:53,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198829803] [2024-10-24 01:22:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:53,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:53,907 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 01:22:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198829803] [2024-10-24 01:22:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198829803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:22:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412146221] [2024-10-24 01:22:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:53,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:22:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:22:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:22:53,910 INFO L87 Difference]: Start difference. First operand 358 states and 549 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:22:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:53,940 INFO L93 Difference]: Finished difference Result 962 states and 1495 transitions. [2024-10-24 01:22:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:22:53,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 01:22:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:53,944 INFO L225 Difference]: With dead ends: 962 [2024-10-24 01:22:53,944 INFO L226 Difference]: Without dead ends: 632 [2024-10-24 01:22:53,947 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 01:22:53,948 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 49 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:53,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-10-24 01:22:53,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2024-10-24 01:22:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.534181240063593) internal successors, (965), 629 states have internal predecessors, (965), 0 states have call successors, (0), 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 01:22:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 965 transitions. [2024-10-24 01:22:53,972 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 965 transitions. Word has length 51 [2024-10-24 01:22:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:53,972 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 965 transitions. [2024-10-24 01:22:53,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:22:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 965 transitions. [2024-10-24 01:22:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:22:53,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:53,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:22:53,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:22:53,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:53,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1884075168, now seen corresponding path program 1 times [2024-10-24 01:22:53,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:53,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425981872] [2024-10-24 01:22:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:53,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:54,071 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 01:22:54,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:54,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425981872] [2024-10-24 01:22:54,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425981872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:54,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:54,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:22:54,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367670640] [2024-10-24 01:22:54,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:54,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:22:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:22:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:22:54,074 INFO L87 Difference]: Start difference. First operand 630 states and 965 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:22:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:54,121 INFO L93 Difference]: Finished difference Result 1228 states and 1898 transitions. [2024-10-24 01:22:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:22:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-24 01:22:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:54,127 INFO L225 Difference]: With dead ends: 1228 [2024-10-24 01:22:54,128 INFO L226 Difference]: Without dead ends: 898 [2024-10-24 01:22:54,128 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 01:22:54,130 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 239 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 01:22:54,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 239 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-10-24 01:22:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 896. [2024-10-24 01:22:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.5273743016759778) internal successors, (1367), 895 states have internal predecessors, (1367), 0 states have call successors, (0), 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 01:22:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1367 transitions. [2024-10-24 01:22:54,158 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1367 transitions. Word has length 51 [2024-10-24 01:22:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:54,159 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1367 transitions. [2024-10-24 01:22:54,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:22:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1367 transitions. [2024-10-24 01:22:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:22:54,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:54,161 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 01:22:54,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:22:54,162 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:54,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290152, now seen corresponding path program 1 times [2024-10-24 01:22:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978251329] [2024-10-24 01:22:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:54,246 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 01:22:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978251329] [2024-10-24 01:22:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978251329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:54,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:22:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248262063] [2024-10-24 01:22:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:54,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:22:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:22:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:22:54,249 INFO L87 Difference]: Start difference. First operand 896 states and 1367 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 01:22:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:54,297 INFO L93 Difference]: Finished difference Result 2436 states and 3705 transitions. [2024-10-24 01:22:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:22:54,298 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 01:22:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:54,305 INFO L225 Difference]: With dead ends: 2436 [2024-10-24 01:22:54,305 INFO L226 Difference]: Without dead ends: 1570 [2024-10-24 01:22:54,306 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 01:22:54,309 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 233 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 01:22:54,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 233 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-10-24 01:22:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2024-10-24 01:22:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4952137843012125) internal successors, (2343), 1567 states have internal predecessors, (2343), 0 states have call successors, (0), 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 01:22:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2343 transitions. [2024-10-24 01:22:54,359 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2343 transitions. Word has length 52 [2024-10-24 01:22:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:54,360 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2343 transitions. [2024-10-24 01:22:54,360 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 01:22:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2343 transitions. [2024-10-24 01:22:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 01:22:54,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:54,362 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] [2024-10-24 01:22:54,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:22:54,362 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:54,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2124847998, now seen corresponding path program 1 times [2024-10-24 01:22:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:54,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884441111] [2024-10-24 01:22:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:22:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884441111] [2024-10-24 01:22:54,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884441111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:54,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:54,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:22:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153929218] [2024-10-24 01:22:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:54,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:22:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:22:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:22:54,497 INFO L87 Difference]: Start difference. First operand 1568 states and 2343 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:22:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:54,541 INFO L93 Difference]: Finished difference Result 3108 states and 4657 transitions. [2024-10-24 01:22:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:22:54,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2024-10-24 01:22:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:54,547 INFO L225 Difference]: With dead ends: 3108 [2024-10-24 01:22:54,547 INFO L226 Difference]: Without dead ends: 1570 [2024-10-24 01:22:54,549 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 01:22:54,550 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 54 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:54,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 224 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:22:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-10-24 01:22:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2024-10-24 01:22:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4798978940650924) internal successors, (2319), 1567 states have internal predecessors, (2319), 0 states have call successors, (0), 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 01:22:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2319 transitions. [2024-10-24 01:22:54,593 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2319 transitions. Word has length 73 [2024-10-24 01:22:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:54,593 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2319 transitions. [2024-10-24 01:22:54,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:22:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2319 transitions. [2024-10-24 01:22:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 01:22:54,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:54,595 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] [2024-10-24 01:22:54,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:22:54,596 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:54,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -172725725, now seen corresponding path program 1 times [2024-10-24 01:22:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852757658] [2024-10-24 01:22:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:22:54,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852757658] [2024-10-24 01:22:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852757658] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:22:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250017864] [2024-10-24 01:22:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:54,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:22:54,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:22:54,821 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 01:22:54,823 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 01:22:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:54,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 01:22:54,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:22:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:22:55,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:22:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:22:56,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250017864] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:22:56,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:22:56,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-10-24 01:22:56,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174839120] [2024-10-24 01:22:56,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:22:56,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 01:22:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:56,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 01:22:56,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-10-24 01:22:56,315 INFO L87 Difference]: Start difference. First operand 1568 states and 2319 transitions. Second operand has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 0 states have call successors, (0), 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 01:22:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:57,142 INFO L93 Difference]: Finished difference Result 6104 states and 8928 transitions. [2024-10-24 01:22:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 01:22:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 0 states have call successors, (0), 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 73 [2024-10-24 01:22:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:57,160 INFO L225 Difference]: With dead ends: 6104 [2024-10-24 01:22:57,160 INFO L226 Difference]: Without dead ends: 4566 [2024-10-24 01:22:57,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2024-10-24 01:22:57,165 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1843 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:57,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 735 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:22:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2024-10-24 01:22:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 3820. [2024-10-24 01:22:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3819 states have (on average 1.4456664048180152) internal successors, (5521), 3819 states have internal predecessors, (5521), 0 states have call successors, (0), 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 01:22:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 5521 transitions. [2024-10-24 01:22:57,301 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 5521 transitions. Word has length 73 [2024-10-24 01:22:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:57,302 INFO L471 AbstractCegarLoop]: Abstraction has 3820 states and 5521 transitions. [2024-10-24 01:22:57,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 0 states have call successors, (0), 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 01:22:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 5521 transitions. [2024-10-24 01:22:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:22:57,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:57,303 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] [2024-10-24 01:22:57,323 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 01:22:57,507 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,SelfDestructingSolverStorable10 [2024-10-24 01:22:57,508 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:57,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783157, now seen corresponding path program 1 times [2024-10-24 01:22:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544443967] [2024-10-24 01:22:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:57,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:57,645 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 01:22:57,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:57,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544443967] [2024-10-24 01:22:57,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544443967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:57,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:57,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:22:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843111275] [2024-10-24 01:22:57,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:57,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:22:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:22:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:22:57,647 INFO L87 Difference]: Start difference. First operand 3820 states and 5521 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:22:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:57,922 INFO L93 Difference]: Finished difference Result 11403 states and 16634 transitions. [2024-10-24 01:22:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:22:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:22:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:57,988 INFO L225 Difference]: With dead ends: 11403 [2024-10-24 01:22:57,988 INFO L226 Difference]: Without dead ends: 9497 [2024-10-24 01:22:57,993 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 01:22:57,994 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 452 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:57,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 725 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:22:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2024-10-24 01:22:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 5674. [2024-10-24 01:22:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5674 states, 5673 states have (on average 1.438744932134673) internal successors, (8162), 5673 states have internal predecessors, (8162), 0 states have call successors, (0), 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 01:22:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 8162 transitions. [2024-10-24 01:22:58,275 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 8162 transitions. Word has length 74 [2024-10-24 01:22:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:58,275 INFO L471 AbstractCegarLoop]: Abstraction has 5674 states and 8162 transitions. [2024-10-24 01:22:58,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:22:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 8162 transitions. [2024-10-24 01:22:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:22:58,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:58,277 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] [2024-10-24 01:22:58,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:22:58,277 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:58,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 946628745, now seen corresponding path program 1 times [2024-10-24 01:22:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551260634] [2024-10-24 01:22:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:58,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:22:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551260634] [2024-10-24 01:22:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551260634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:22:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466118599] [2024-10-24 01:22:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:58,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:22:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:22:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:22:58,389 INFO L87 Difference]: Start difference. First operand 5674 states and 8162 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:22:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:58,729 INFO L93 Difference]: Finished difference Result 13257 states and 19275 transitions. [2024-10-24 01:22:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:22:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:22:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:58,765 INFO L225 Difference]: With dead ends: 13257 [2024-10-24 01:22:58,765 INFO L226 Difference]: Without dead ends: 11351 [2024-10-24 01:22:58,773 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 01:22:58,773 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 453 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:58,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 679 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:22:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11351 states. [2024-10-24 01:22:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11351 to 7521. [2024-10-24 01:22:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7521 states, 7520 states have (on average 1.4351063829787234) internal successors, (10792), 7520 states have internal predecessors, (10792), 0 states have call successors, (0), 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 01:22:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7521 states to 7521 states and 10792 transitions. [2024-10-24 01:22:59,073 INFO L78 Accepts]: Start accepts. Automaton has 7521 states and 10792 transitions. Word has length 74 [2024-10-24 01:22:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:22:59,074 INFO L471 AbstractCegarLoop]: Abstraction has 7521 states and 10792 transitions. [2024-10-24 01:22:59,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:22:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7521 states and 10792 transitions. [2024-10-24 01:22:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:22:59,075 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:22:59,075 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] [2024-10-24 01:22:59,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:22:59,076 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:22:59,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:22:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash -855302777, now seen corresponding path program 1 times [2024-10-24 01:22:59,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:22:59,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850275210] [2024-10-24 01:22:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:22:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:22:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:22:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:22:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:22:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850275210] [2024-10-24 01:22:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850275210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:22:59,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:22:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:22:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10688247] [2024-10-24 01:22:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:22:59,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:22:59,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:22:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:22:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:22:59,198 INFO L87 Difference]: Start difference. First operand 7521 states and 10792 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:22:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:22:59,574 INFO L93 Difference]: Finished difference Result 15088 states and 21878 transitions. [2024-10-24 01:22:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:22:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:22:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:22:59,642 INFO L225 Difference]: With dead ends: 15088 [2024-10-24 01:22:59,642 INFO L226 Difference]: Without dead ends: 13182 [2024-10-24 01:22:59,647 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 01:22:59,648 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 496 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:22:59,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 663 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:22:59,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2024-10-24 01:22:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 9359. [2024-10-24 01:23:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9359 states, 9358 states have (on average 1.4325710621927763) internal successors, (13406), 9358 states have internal predecessors, (13406), 0 states have call successors, (0), 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 01:23:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 13406 transitions. [2024-10-24 01:23:00,038 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 13406 transitions. Word has length 74 [2024-10-24 01:23:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:00,039 INFO L471 AbstractCegarLoop]: Abstraction has 9359 states and 13406 transitions. [2024-10-24 01:23:00,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 13406 transitions. [2024-10-24 01:23:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:00,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:00,040 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] [2024-10-24 01:23:00,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:23:00,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:00,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1479802491, now seen corresponding path program 1 times [2024-10-24 01:23:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22508658] [2024-10-24 01:23:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:23:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:00,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22508658] [2024-10-24 01:23:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22508658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:00,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:00,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:23:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601219334] [2024-10-24 01:23:00,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:00,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:23:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:23:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:23:00,151 INFO L87 Difference]: Start difference. First operand 9359 states and 13406 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 01:23:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:00,588 INFO L93 Difference]: Finished difference Result 16912 states and 24470 transitions. [2024-10-24 01:23:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:23:00,588 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 74 [2024-10-24 01:23:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:00,620 INFO L225 Difference]: With dead ends: 16912 [2024-10-24 01:23:00,620 INFO L226 Difference]: Without dead ends: 15006 [2024-10-24 01:23:00,629 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 01:23:00,629 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 463 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:00,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 729 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:00,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2024-10-24 01:23:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 11183. [2024-10-24 01:23:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11183 states, 11182 states have (on average 1.430692183866929) internal successors, (15998), 11182 states have internal predecessors, (15998), 0 states have call successors, (0), 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 01:23:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11183 states to 11183 states and 15998 transitions. [2024-10-24 01:23:01,112 INFO L78 Accepts]: Start accepts. Automaton has 11183 states and 15998 transitions. Word has length 74 [2024-10-24 01:23:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:01,113 INFO L471 AbstractCegarLoop]: Abstraction has 11183 states and 15998 transitions. [2024-10-24 01:23:01,113 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 01:23:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 11183 states and 15998 transitions. [2024-10-24 01:23:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:23:01,115 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:01,115 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 01:23:01,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:23:01,115 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:01,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1454634311, now seen corresponding path program 1 times [2024-10-24 01:23:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:01,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075856301] [2024-10-24 01:23:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075856301] [2024-10-24 01:23:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075856301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:23:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216448758] [2024-10-24 01:23:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:01,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:23:01,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:01,476 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 01:23:01,477 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 01:23:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:01,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 01:23:01,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:23:02,424 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 01:23:02,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:23:03,667 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 01:23:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216448758] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:23:03,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:23:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2024-10-24 01:23:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380714936] [2024-10-24 01:23:03,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:23:03,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 01:23:03,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 01:23:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-10-24 01:23:03,670 INFO L87 Difference]: Start difference. First operand 11183 states and 15998 transitions. Second operand has 29 states, 29 states have (on average 7.137931034482759) internal successors, (207), 28 states have internal predecessors, (207), 0 states have call successors, (0), 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 01:23:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:20,432 INFO L93 Difference]: Finished difference Result 263496 states and 381384 transitions. [2024-10-24 01:23:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-10-24 01:23:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.137931034482759) internal successors, (207), 28 states have internal predecessors, (207), 0 states have call successors, (0), 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 01:23:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:21,161 INFO L225 Difference]: With dead ends: 263496 [2024-10-24 01:23:21,161 INFO L226 Difference]: Without dead ends: 252345 [2024-10-24 01:23:21,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20172 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=6543, Invalid=42963, Unknown=0, NotChecked=0, Total=49506 [2024-10-24 01:23:21,262 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 11429 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11429 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:21,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11429 Valid, 3600 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-24 01:23:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252345 states. [2024-10-24 01:23:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252345 to 112865. [2024-10-24 01:23:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112865 states, 112864 states have (on average 1.4180872554578963) internal successors, (160051), 112864 states have internal predecessors, (160051), 0 states have call successors, (0), 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 01:23:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112865 states to 112865 states and 160051 transitions. [2024-10-24 01:23:26,406 INFO L78 Accepts]: Start accepts. Automaton has 112865 states and 160051 transitions. Word has length 77 [2024-10-24 01:23:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:26,406 INFO L471 AbstractCegarLoop]: Abstraction has 112865 states and 160051 transitions. [2024-10-24 01:23:26,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.137931034482759) internal successors, (207), 28 states have internal predecessors, (207), 0 states have call successors, (0), 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 01:23:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 112865 states and 160051 transitions. [2024-10-24 01:23:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:23:26,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:26,408 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:26,422 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 01:23:26,609 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,SelfDestructingSolverStorable15 [2024-10-24 01:23:26,609 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:26,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash -361103304, now seen corresponding path program 1 times [2024-10-24 01:23:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819445069] [2024-10-24 01:23:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:26,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819445069] [2024-10-24 01:23:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819445069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:26,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:26,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505352964] [2024-10-24 01:23:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:26,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:26,932 INFO L87 Difference]: Start difference. First operand 112865 states and 160051 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:28,528 INFO L93 Difference]: Finished difference Result 167337 states and 237021 transitions. [2024-10-24 01:23:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-24 01:23:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:28,624 INFO L225 Difference]: With dead ends: 167337 [2024-10-24 01:23:28,624 INFO L226 Difference]: Without dead ends: 54876 [2024-10-24 01:23:28,742 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 01:23:28,745 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 41 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:28,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54876 states. [2024-10-24 01:23:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54876 to 54226. [2024-10-24 01:23:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54226 states, 54225 states have (on average 1.390391885661595) internal successors, (75394), 54225 states have internal predecessors, (75394), 0 states have call successors, (0), 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 01:23:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54226 states to 54226 states and 75394 transitions. [2024-10-24 01:23:30,659 INFO L78 Accepts]: Start accepts. Automaton has 54226 states and 75394 transitions. Word has length 77 [2024-10-24 01:23:30,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:30,660 INFO L471 AbstractCegarLoop]: Abstraction has 54226 states and 75394 transitions. [2024-10-24 01:23:30,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 54226 states and 75394 transitions. [2024-10-24 01:23:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:23:30,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:30,662 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:30,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:23:30,663 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:30,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1246398753, now seen corresponding path program 1 times [2024-10-24 01:23:30,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:30,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569376852] [2024-10-24 01:23:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:30,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:30,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569376852] [2024-10-24 01:23:30,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569376852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:30,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923936704] [2024-10-24 01:23:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:30,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:30,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:30,731 INFO L87 Difference]: Start difference. First operand 54226 states and 75394 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 01:23:33,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:33,128 INFO L93 Difference]: Finished difference Result 146316 states and 202761 transitions. [2024-10-24 01:23:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:33,129 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 01:23:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:33,247 INFO L225 Difference]: With dead ends: 146316 [2024-10-24 01:23:33,247 INFO L226 Difference]: Without dead ends: 92404 [2024-10-24 01:23:33,281 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 01:23:33,281 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 50 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:33,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92404 states. [2024-10-24 01:23:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92404 to 92402. [2024-10-24 01:23:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92402 states, 92401 states have (on average 1.3666302312745533) internal successors, (126278), 92401 states have internal predecessors, (126278), 0 states have call successors, (0), 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 01:23:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92402 states to 92402 states and 126278 transitions. [2024-10-24 01:23:36,514 INFO L78 Accepts]: Start accepts. Automaton has 92402 states and 126278 transitions. Word has length 78 [2024-10-24 01:23:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:36,515 INFO L471 AbstractCegarLoop]: Abstraction has 92402 states and 126278 transitions. [2024-10-24 01:23:36,515 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 01:23:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 92402 states and 126278 transitions. [2024-10-24 01:23:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:23:36,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:36,518 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:36,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:23:36,518 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:36,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1452646381, now seen corresponding path program 1 times [2024-10-24 01:23:36,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:36,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449673902] [2024-10-24 01:23:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:36,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449673902] [2024-10-24 01:23:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449673902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:36,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:36,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404417310] [2024-10-24 01:23:36,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:36,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:36,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:36,570 INFO L87 Difference]: Start difference. First operand 92402 states and 126278 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 01:23:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:39,886 INFO L93 Difference]: Finished difference Result 199587 states and 272309 transitions. [2024-10-24 01:23:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:39,887 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 01:23:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:40,072 INFO L225 Difference]: With dead ends: 199587 [2024-10-24 01:23:40,072 INFO L226 Difference]: Without dead ends: 107395 [2024-10-24 01:23:40,115 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 01:23:40,116 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 49 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:40,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 248 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107395 states. [2024-10-24 01:23:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107395 to 97337. [2024-10-24 01:23:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97337 states, 97336 states have (on average 1.3449494534396318) internal successors, (130912), 97336 states have internal predecessors, (130912), 0 states have call successors, (0), 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 01:23:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97337 states to 97337 states and 130912 transitions. [2024-10-24 01:23:43,633 INFO L78 Accepts]: Start accepts. Automaton has 97337 states and 130912 transitions. Word has length 78 [2024-10-24 01:23:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:43,635 INFO L471 AbstractCegarLoop]: Abstraction has 97337 states and 130912 transitions. [2024-10-24 01:23:43,635 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 01:23:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 97337 states and 130912 transitions. [2024-10-24 01:23:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:23:43,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:43,640 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:43,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:23:43,640 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:43,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -801187947, now seen corresponding path program 1 times [2024-10-24 01:23:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:43,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223399177] [2024-10-24 01:23:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:44,272 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 01:23:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223399177] [2024-10-24 01:23:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223399177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:23:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605190219] [2024-10-24 01:23:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:44,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:23:44,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:44,274 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 01:23:44,275 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 01:23:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:44,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-24 01:23:44,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:23:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:47,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:23:49,925 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 01:23:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605190219] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:23:49,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:23:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 17] total 41 [2024-10-24 01:23:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381414256] [2024-10-24 01:23:49,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:23:49,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-24 01:23:49,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-24 01:23:49,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 01:23:49,927 INFO L87 Difference]: Start difference. First operand 97337 states and 130912 transitions. Second operand has 41 states, 41 states have (on average 5.2439024390243905) internal successors, (215), 41 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)