./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.6.2.ufo.BOUNDED-12.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.6.2.ufo.BOUNDED-12.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:23:50,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:23:50,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:23:50,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:23:50,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:23:50,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:23:50,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:23:50,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:23:50,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:23:50,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:23:50,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:23:50,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:23:50,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:23:50,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:23:50,268 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:23:50,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:23:50,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:23:50,269 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:23:50,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:23:50,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:23:50,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:23:50,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:23:50,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:23:50,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:23:50,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:23:50,275 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:23:50,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:23:50,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:23:50,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:23:50,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:23:50,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:23:50,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:23:50,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:23:50,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:23:50,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:23:50,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:23:50,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:23:50,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:23:50,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:23:50,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:23:50,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:23:50,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:23:50,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 [2024-10-24 01:23:50,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:23:50,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:23:50,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:23:50,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:23:50,591 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:23:50,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2024-10-24 01:23:52,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:23:52,248 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:23:52,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2024-10-24 01:23:52,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca4b26a0/4794bcd452f54305838e5c95d0111e7c/FLAGd5f88c590 [2024-10-24 01:23:52,277 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca4b26a0/4794bcd452f54305838e5c95d0111e7c [2024-10-24 01:23:52,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:23:52,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:23:52,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:23:52,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:23:52,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:23:52,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661a6719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52, skipping insertion in model container [2024-10-24 01:23:52,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:23:52,652 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.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2024-10-24 01:23:52,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:23:52,677 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:23:52,766 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.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2024-10-24 01:23:52,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:23:52,797 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:23:52,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52 WrapperNode [2024-10-24 01:23:52,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:23:52,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:23:52,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:23:52,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:23:52,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,861 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 453 [2024-10-24 01:23:52,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:23:52,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:23:52,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:23:52,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:23:52,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,899 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 01:23:52,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:23:52,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:23:52,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:23:52,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:23:52,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (1/1) ... [2024-10-24 01:23:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:23:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:52,967 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 01:23:52,970 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 01:23:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:23:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:23:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:23:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:23:53,128 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:23:53,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:23:53,651 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-10-24 01:23:53,653 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:23:53,701 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:23:53,702 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:23:53,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:53 BoogieIcfgContainer [2024-10-24 01:23:53,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:23:53,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:23:53,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:23:53,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:23:53,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:52" (1/3) ... [2024-10-24 01:23:53,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4048c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:53, skipping insertion in model container [2024-10-24 01:23:53,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:52" (2/3) ... [2024-10-24 01:23:53,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4048c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:53, skipping insertion in model container [2024-10-24 01:23:53,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:53" (3/3) ... [2024-10-24 01:23:53,713 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2024-10-24 01:23:53,731 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:23:53,732 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:23:53,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:23:53,797 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;@4146caee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:23:53,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:23:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 114 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 01:23:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:23:53,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:53,811 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] [2024-10-24 01:23:53,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:53,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2061566520, now seen corresponding path program 1 times [2024-10-24 01:23:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902280810] [2024-10-24 01:23:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:54,315 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 01:23:54,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:54,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902280810] [2024-10-24 01:23:54,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902280810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:54,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:54,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:23:54,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550130989] [2024-10-24 01:23:54,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:54,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:23:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:23:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:54,356 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 114 states have internal predecessors, (203), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 01:23:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:54,484 INFO L93 Difference]: Finished difference Result 188 states and 323 transitions. [2024-10-24 01:23:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:23:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-24 01:23:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:54,496 INFO L225 Difference]: With dead ends: 188 [2024-10-24 01:23:54,496 INFO L226 Difference]: Without dead ends: 113 [2024-10-24 01:23:54,499 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 01:23:54,505 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:54,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 544 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:54,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-24 01:23:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-10-24 01:23:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 112 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 01:23:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 157 transitions. [2024-10-24 01:23:54,544 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 157 transitions. Word has length 34 [2024-10-24 01:23:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:54,545 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 157 transitions. [2024-10-24 01:23:54,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 01:23:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 157 transitions. [2024-10-24 01:23:54,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:54,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:54,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:54,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:23:54,548 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:54,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 142441090, now seen corresponding path program 1 times [2024-10-24 01:23:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:54,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555639146] [2024-10-24 01:23:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:54,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:54,740 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 01:23:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:54,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555639146] [2024-10-24 01:23:54,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555639146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:54,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:54,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613118095] [2024-10-24 01:23:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:54,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:54,748 INFO L87 Difference]: Start difference. First operand 113 states and 157 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:54,787 INFO L93 Difference]: Finished difference Result 241 states and 367 transitions. [2024-10-24 01:23:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:23:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:54,789 INFO L225 Difference]: With dead ends: 241 [2024-10-24 01:23:54,789 INFO L226 Difference]: Without dead ends: 173 [2024-10-24 01:23:54,790 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 01:23:54,791 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 344 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 01:23:54,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-24 01:23:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-10-24 01:23:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.488235294117647) internal successors, (253), 170 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-10-24 01:23:54,813 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 74 [2024-10-24 01:23:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:54,813 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-10-24 01:23:54,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-10-24 01:23:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:54,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:54,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:54,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:23:54,817 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:54,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash 55665313, now seen corresponding path program 1 times [2024-10-24 01:23:54,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:54,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775845132] [2024-10-24 01:23:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:54,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:54,954 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 01:23:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775845132] [2024-10-24 01:23:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775845132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:54,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:54,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492489617] [2024-10-24 01:23:54,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:54,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:54,958 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:54,982 INFO L93 Difference]: Finished difference Result 407 states and 641 transitions. [2024-10-24 01:23:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:23:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:54,985 INFO L225 Difference]: With dead ends: 407 [2024-10-24 01:23:54,985 INFO L226 Difference]: Without dead ends: 281 [2024-10-24 01:23:54,986 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 01:23:54,987 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 92 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 341 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 01:23:54,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-10-24 01:23:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2024-10-24 01:23:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.5467625899280575) internal successors, (430), 278 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 01:23:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 430 transitions. [2024-10-24 01:23:55,017 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 430 transitions. Word has length 74 [2024-10-24 01:23:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:55,018 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 430 transitions. [2024-10-24 01:23:55,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 430 transitions. [2024-10-24 01:23:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:55,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:55,020 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:55,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:23:55,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:55,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash -379309504, now seen corresponding path program 1 times [2024-10-24 01:23:55,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:55,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841383160] [2024-10-24 01:23:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:55,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:55,172 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 01:23:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841383160] [2024-10-24 01:23:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841383160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:55,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152709608] [2024-10-24 01:23:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:55,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:55,174 INFO L87 Difference]: Start difference. First operand 279 states and 430 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:55,207 INFO L93 Difference]: Finished difference Result 715 states and 1144 transitions. [2024-10-24 01:23:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:55,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:23:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:55,210 INFO L225 Difference]: With dead ends: 715 [2024-10-24 01:23:55,210 INFO L226 Difference]: Without dead ends: 481 [2024-10-24 01:23:55,211 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 01:23:55,215 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 80 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 312 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 01:23:55,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-10-24 01:23:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2024-10-24 01:23:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5774058577405858) internal successors, (754), 478 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 01:23:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 754 transitions. [2024-10-24 01:23:55,255 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 754 transitions. Word has length 74 [2024-10-24 01:23:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:55,256 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 754 transitions. [2024-10-24 01:23:55,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 754 transitions. [2024-10-24 01:23:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:55,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:55,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:55,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:23:55,261 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:55,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash 7485535, now seen corresponding path program 1 times [2024-10-24 01:23:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:55,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231958286] [2024-10-24 01:23:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:55,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:55,515 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 01:23:55,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:55,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231958286] [2024-10-24 01:23:55,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231958286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:55,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:55,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:55,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102519821] [2024-10-24 01:23:55,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:55,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:55,518 INFO L87 Difference]: Start difference. First operand 479 states and 754 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:55,808 INFO L93 Difference]: Finished difference Result 3517 states and 5717 transitions. [2024-10-24 01:23:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:55,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:23:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:55,824 INFO L225 Difference]: With dead ends: 3517 [2024-10-24 01:23:55,824 INFO L226 Difference]: Without dead ends: 3083 [2024-10-24 01:23:55,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:55,828 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 1813 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:55,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1362 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2024-10-24 01:23:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 911. [2024-10-24 01:23:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.589010989010989) internal successors, (1446), 910 states have internal predecessors, (1446), 0 states have call successors, (0), 0 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 01:23:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1446 transitions. [2024-10-24 01:23:55,893 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1446 transitions. Word has length 74 [2024-10-24 01:23:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:55,894 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1446 transitions. [2024-10-24 01:23:55,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1446 transitions. [2024-10-24 01:23:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 01:23:55,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:55,898 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:55,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:23:55,898 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:55,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash 218992084, now seen corresponding path program 1 times [2024-10-24 01:23:55,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:55,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838754153] [2024-10-24 01:23:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:55,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:56,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:56,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838754153] [2024-10-24 01:23:56,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838754153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:56,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:56,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:23:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932877938] [2024-10-24 01:23:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:56,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:23:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:56,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:23:56,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:56,154 INFO L87 Difference]: Start difference. First operand 911 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:56,194 INFO L93 Difference]: Finished difference Result 945 states and 1495 transitions. [2024-10-24 01:23:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:23:56,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-10-24 01:23:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:56,198 INFO L225 Difference]: With dead ends: 945 [2024-10-24 01:23:56,198 INFO L226 Difference]: Without dead ends: 943 [2024-10-24 01:23:56,200 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 01:23:56,203 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 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 01:23:56,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-10-24 01:23:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2024-10-24 01:23:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 1.5690021231422506) internal successors, (1478), 942 states have internal predecessors, (1478), 0 states have call successors, (0), 0 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 01:23:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1478 transitions. [2024-10-24 01:23:56,230 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1478 transitions. Word has length 75 [2024-10-24 01:23:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:56,230 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1478 transitions. [2024-10-24 01:23:56,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1478 transitions. [2024-10-24 01:23:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:23:56,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:56,232 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:56,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:23:56,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:56,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:56,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1800178137, now seen corresponding path program 1 times [2024-10-24 01:23:56,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:56,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323375305] [2024-10-24 01:23:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:56,338 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 01:23:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323375305] [2024-10-24 01:23:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323375305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:56,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:56,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:56,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215298271] [2024-10-24 01:23:56,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:56,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:56,341 INFO L87 Difference]: Start difference. First operand 943 states and 1478 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:56,382 INFO L93 Difference]: Finished difference Result 2627 states and 4152 transitions. [2024-10-24 01:23:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 01:23:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:56,390 INFO L225 Difference]: With dead ends: 2627 [2024-10-24 01:23:56,390 INFO L226 Difference]: Without dead ends: 1729 [2024-10-24 01:23:56,392 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 01:23:56,393 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 262 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 01:23:56,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 262 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2024-10-24 01:23:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1727. [2024-10-24 01:23:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.5654692931633836) internal successors, (2702), 1726 states have internal predecessors, (2702), 0 states have call successors, (0), 0 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 01:23:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2702 transitions. [2024-10-24 01:23:56,441 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2702 transitions. Word has length 76 [2024-10-24 01:23:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:56,443 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2702 transitions. [2024-10-24 01:23:56,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2702 transitions. [2024-10-24 01:23:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:23:56,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:56,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:56,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:23:56,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -358513117, now seen corresponding path program 1 times [2024-10-24 01:23:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961604146] [2024-10-24 01:23:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:56,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:56,532 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 01:23:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961604146] [2024-10-24 01:23:56,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961604146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:56,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:56,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064450712] [2024-10-24 01:23:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:56,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:56,536 INFO L87 Difference]: Start difference. First operand 1727 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:56,589 INFO L93 Difference]: Finished difference Result 3413 states and 5379 transitions. [2024-10-24 01:23:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-24 01:23:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:56,598 INFO L225 Difference]: With dead ends: 3413 [2024-10-24 01:23:56,598 INFO L226 Difference]: Without dead ends: 2515 [2024-10-24 01:23:56,600 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 01:23:56,601 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 100 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 356 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 01:23:56,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 356 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2024-10-24 01:23:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2024-10-24 01:23:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 1.5636942675159236) internal successors, (3928), 2512 states have internal predecessors, (3928), 0 states have call successors, (0), 0 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 01:23:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3928 transitions. [2024-10-24 01:23:56,701 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3928 transitions. Word has length 76 [2024-10-24 01:23:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:56,701 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 3928 transitions. [2024-10-24 01:23:56,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3928 transitions. [2024-10-24 01:23:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:23:56,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:56,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:56,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:23:56,702 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:56,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash -478728773, now seen corresponding path program 1 times [2024-10-24 01:23:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:56,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769720515] [2024-10-24 01:23:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:56,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:56,781 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 01:23:56,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769720515] [2024-10-24 01:23:56,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769720515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:56,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106695196] [2024-10-24 01:23:56,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:56,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:56,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:56,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:56,784 INFO L87 Difference]: Start difference. First operand 2513 states and 3928 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 01:23:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:56,868 INFO L93 Difference]: Finished difference Result 7061 states and 11018 transitions. [2024-10-24 01:23:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:56,869 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 01:23:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:56,886 INFO L225 Difference]: With dead ends: 7061 [2024-10-24 01:23:56,886 INFO L226 Difference]: Without dead ends: 4595 [2024-10-24 01:23:56,889 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 01:23:56,890 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 335 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 01:23:56,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 335 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2024-10-24 01:23:56,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4593. [2024-10-24 01:23:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4593 states, 4592 states have (on average 1.543554006968641) internal successors, (7088), 4592 states have internal predecessors, (7088), 0 states have call successors, (0), 0 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 01:23:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4593 states to 4593 states and 7088 transitions. [2024-10-24 01:23:57,023 INFO L78 Accepts]: Start accepts. Automaton has 4593 states and 7088 transitions. Word has length 77 [2024-10-24 01:23:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:57,024 INFO L471 AbstractCegarLoop]: Abstraction has 4593 states and 7088 transitions. [2024-10-24 01:23:57,025 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 01:23:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4593 states and 7088 transitions. [2024-10-24 01:23:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:23:57,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:57,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:57,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:23:57,026 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:57,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash -661055781, now seen corresponding path program 1 times [2024-10-24 01:23:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:57,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715405531] [2024-10-24 01:23:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:57,147 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 01:23:57,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715405531] [2024-10-24 01:23:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715405531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:57,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:57,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300161600] [2024-10-24 01:23:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:57,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:57,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:57,150 INFO L87 Difference]: Start difference. First operand 4593 states and 7088 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 01:23:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:57,286 INFO L93 Difference]: Finished difference Result 12917 states and 19826 transitions. [2024-10-24 01:23:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:57,287 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 01:23:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:57,317 INFO L225 Difference]: With dead ends: 12917 [2024-10-24 01:23:57,317 INFO L226 Difference]: Without dead ends: 8371 [2024-10-24 01:23:57,324 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 01:23:57,324 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 88 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 348 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 01:23:57,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2024-10-24 01:23:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8369. [2024-10-24 01:23:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 8368 states have (on average 1.5162523900573615) internal successors, (12688), 8368 states have internal predecessors, (12688), 0 states have call successors, (0), 0 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 01:23:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12688 transitions. [2024-10-24 01:23:57,640 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12688 transitions. Word has length 77 [2024-10-24 01:23:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:57,640 INFO L471 AbstractCegarLoop]: Abstraction has 8369 states and 12688 transitions. [2024-10-24 01:23:57,640 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 01:23:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12688 transitions. [2024-10-24 01:23:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:23:57,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:57,647 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:57,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:23:57,648 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:57,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash -925108354, now seen corresponding path program 1 times [2024-10-24 01:23:57,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:57,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343902458] [2024-10-24 01:23:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:57,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343902458] [2024-10-24 01:23:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343902458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768863482] [2024-10-24 01:23:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:57,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:57,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:57,814 INFO L87 Difference]: Start difference. First operand 8369 states and 12688 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:57,958 INFO L93 Difference]: Finished difference Result 16693 states and 25330 transitions. [2024-10-24 01:23:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-10-24 01:23:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:57,993 INFO L225 Difference]: With dead ends: 16693 [2024-10-24 01:23:57,994 INFO L226 Difference]: Without dead ends: 8371 [2024-10-24 01:23:58,004 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 01:23:58,005 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 78 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 340 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 01:23:58,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 340 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2024-10-24 01:23:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8369. [2024-10-24 01:23:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 8368 states have (on average 1.5047801147227533) internal successors, (12592), 8368 states have internal predecessors, (12592), 0 states have call successors, (0), 0 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 01:23:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12592 transitions. [2024-10-24 01:23:58,307 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12592 transitions. Word has length 106 [2024-10-24 01:23:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:58,308 INFO L471 AbstractCegarLoop]: Abstraction has 8369 states and 12592 transitions. [2024-10-24 01:23:58,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12592 transitions. [2024-10-24 01:23:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:23:58,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:58,311 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:58,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:23:58,311 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:58,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1198246943, now seen corresponding path program 1 times [2024-10-24 01:23:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406158127] [2024-10-24 01:23:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:58,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:58,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406158127] [2024-10-24 01:23:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406158127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:58,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:58,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640158302] [2024-10-24 01:23:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:58,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:58,442 INFO L87 Difference]: Start difference. First operand 8369 states and 12592 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:58,600 INFO L93 Difference]: Finished difference Result 12533 states and 18866 transitions. [2024-10-24 01:23:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-10-24 01:23:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:58,609 INFO L225 Difference]: With dead ends: 12533 [2024-10-24 01:23:58,609 INFO L226 Difference]: Without dead ends: 4211 [2024-10-24 01:23:58,617 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 01:23:58,618 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 72 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 321 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 01:23:58,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 321 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2024-10-24 01:23:58,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 4209. [2024-10-24 01:23:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 4208 states have (on average 1.4904942965779469) internal successors, (6272), 4208 states have internal predecessors, (6272), 0 states have call successors, (0), 0 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 01:23:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6272 transitions. [2024-10-24 01:23:58,723 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6272 transitions. Word has length 106 [2024-10-24 01:23:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:58,723 INFO L471 AbstractCegarLoop]: Abstraction has 4209 states and 6272 transitions. [2024-10-24 01:23:58,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6272 transitions. [2024-10-24 01:23:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:23:58,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:58,726 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:23:58,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:23:58,726 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:58,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1704532288, now seen corresponding path program 1 times [2024-10-24 01:23:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:58,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499495312] [2024-10-24 01:23:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:58,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:00,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499495312] [2024-10-24 01:24:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499495312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647104096] [2024-10-24 01:24:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:00,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:00,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:00,262 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 01:24:00,263 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 01:24:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:00,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 01:24:00,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:01,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:02,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647104096] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:02,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:02,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 8] total 23 [2024-10-24 01:24:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45319092] [2024-10-24 01:24:02,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:02,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 01:24:02,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 01:24:02,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-10-24 01:24:02,402 INFO L87 Difference]: Start difference. First operand 4209 states and 6272 transitions. Second operand has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 23 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 01:24:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:14,616 INFO L93 Difference]: Finished difference Result 56061 states and 82870 transitions. [2024-10-24 01:24:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2024-10-24 01:24:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 23 states have internal predecessors, (313), 0 states have call successors, (0), 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 106 [2024-10-24 01:24:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:14,737 INFO L225 Difference]: With dead ends: 56061 [2024-10-24 01:24:14,738 INFO L226 Difference]: Without dead ends: 53211 [2024-10-24 01:24:14,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13535 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4042, Invalid=29998, Unknown=0, NotChecked=0, Total=34040 [2024-10-24 01:24:14,766 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 7075 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7075 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:14,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7075 Valid, 2284 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-24 01:24:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53211 states. [2024-10-24 01:24:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53211 to 40265. [2024-10-24 01:24:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40265 states, 40264 states have (on average 1.4645340751043114) internal successors, (58968), 40264 states have internal predecessors, (58968), 0 states have call successors, (0), 0 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 01:24:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40265 states to 40265 states and 58968 transitions. [2024-10-24 01:24:16,167 INFO L78 Accepts]: Start accepts. Automaton has 40265 states and 58968 transitions. Word has length 106 [2024-10-24 01:24:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:16,168 INFO L471 AbstractCegarLoop]: Abstraction has 40265 states and 58968 transitions. [2024-10-24 01:24:16,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 23 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 01:24:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 40265 states and 58968 transitions. [2024-10-24 01:24:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:24:16,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:16,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:16,191 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 01:24:16,376 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,SelfDestructingSolverStorable12 [2024-10-24 01:24:16,377 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:16,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 665084071, now seen corresponding path program 1 times [2024-10-24 01:24:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:16,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466873517] [2024-10-24 01:24:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:24:16,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:16,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466873517] [2024-10-24 01:24:16,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466873517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:16,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:16,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576595037] [2024-10-24 01:24:16,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:16,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:16,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:16,780 INFO L87 Difference]: Start difference. First operand 40265 states and 58968 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:18,912 INFO L93 Difference]: Finished difference Result 161911 states and 238819 transitions. [2024-10-24 01:24:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:24:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-24 01:24:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:19,217 INFO L225 Difference]: With dead ends: 161911 [2024-10-24 01:24:19,217 INFO L226 Difference]: Without dead ends: 141253 [2024-10-24 01:24:19,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:24:19,292 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 1127 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:19,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1701 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:19,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141253 states. [2024-10-24 01:24:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141253 to 60305. [2024-10-24 01:24:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60305 states, 60304 states have (on average 1.4601353144070046) internal successors, (88052), 60304 states have internal predecessors, (88052), 0 states have call successors, (0), 0 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 01:24:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60305 states to 60305 states and 88052 transitions. [2024-10-24 01:24:22,474 INFO L78 Accepts]: Start accepts. Automaton has 60305 states and 88052 transitions. Word has length 107 [2024-10-24 01:24:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:22,474 INFO L471 AbstractCegarLoop]: Abstraction has 60305 states and 88052 transitions. [2024-10-24 01:24:22,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 60305 states and 88052 transitions. [2024-10-24 01:24:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:24:22,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:22,479 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:22,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:24:22,480 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:22,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash -567330907, now seen corresponding path program 1 times [2024-10-24 01:24:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:22,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121977759] [2024-10-24 01:24:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:24:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121977759] [2024-10-24 01:24:22,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121977759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:22,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:22,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:22,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147011049] [2024-10-24 01:24:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:22,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:22,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:22,744 INFO L87 Difference]: Start difference. First operand 60305 states and 88052 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 01:24:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:25,500 INFO L93 Difference]: Finished difference Result 181951 states and 267903 transitions. [2024-10-24 01:24:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:24:25,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 107 [2024-10-24 01:24:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:25,765 INFO L225 Difference]: With dead ends: 181951 [2024-10-24 01:24:25,765 INFO L226 Difference]: Without dead ends: 161293 [2024-10-24 01:24:25,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:24:25,829 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 1174 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:25,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1533 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:24:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161293 states. [2024-10-24 01:24:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161293 to 80345. [2024-10-24 01:24:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80345 states, 80344 states have (on average 1.4579308971422882) internal successors, (117136), 80344 states have internal predecessors, (117136), 0 states have call successors, (0), 0 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 01:24:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80345 states to 80345 states and 117136 transitions. [2024-10-24 01:24:28,775 INFO L78 Accepts]: Start accepts. Automaton has 80345 states and 117136 transitions. Word has length 107 [2024-10-24 01:24:28,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:28,775 INFO L471 AbstractCegarLoop]: Abstraction has 80345 states and 117136 transitions. [2024-10-24 01:24:28,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 01:24:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 80345 states and 117136 transitions. [2024-10-24 01:24:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:24:28,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:28,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:28,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:24:28,781 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:28,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1565080995, now seen corresponding path program 1 times [2024-10-24 01:24:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856628220] [2024-10-24 01:24:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:24:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856628220] [2024-10-24 01:24:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856628220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:29,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342778321] [2024-10-24 01:24:29,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:29,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:29,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:29,036 INFO L87 Difference]: Start difference. First operand 80345 states and 117136 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 01:24:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:32,674 INFO L93 Difference]: Finished difference Result 201991 states and 296987 transitions. [2024-10-24 01:24:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:24:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2024-10-24 01:24:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:32,930 INFO L225 Difference]: With dead ends: 201991 [2024-10-24 01:24:32,930 INFO L226 Difference]: Without dead ends: 181333 [2024-10-24 01:24:32,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:24:32,974 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 1255 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:32,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1461 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181333 states. [2024-10-24 01:24:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181333 to 100385. [2024-10-24 01:24:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100385 states, 100384 states have (on average 1.4566066305387313) internal successors, (146220), 100384 states have internal predecessors, (146220), 0 states have call successors, (0), 0 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 01:24:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100385 states to 100385 states and 146220 transitions. [2024-10-24 01:24:36,376 INFO L78 Accepts]: Start accepts. Automaton has 100385 states and 146220 transitions. Word has length 107 [2024-10-24 01:24:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:36,378 INFO L471 AbstractCegarLoop]: Abstraction has 100385 states and 146220 transitions. [2024-10-24 01:24:36,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 01:24:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 100385 states and 146220 transitions. [2024-10-24 01:24:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:24:36,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:36,383 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:36,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:24:36,383 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:36,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash -236850527, now seen corresponding path program 1 times [2024-10-24 01:24:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133318389] [2024-10-24 01:24:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:36,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:24:36,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133318389] [2024-10-24 01:24:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133318389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:36,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960128854] [2024-10-24 01:24:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:36,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:36,571 INFO L87 Difference]: Start difference. First operand 100385 states and 146220 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 01:24:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:40,641 INFO L93 Difference]: Finished difference Result 222031 states and 326071 transitions. [2024-10-24 01:24:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:24:40,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 107 [2024-10-24 01:24:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:40,893 INFO L225 Difference]: With dead ends: 222031 [2024-10-24 01:24:40,893 INFO L226 Difference]: Without dead ends: 201373 [2024-10-24 01:24:40,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:24:40,942 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 1346 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:40,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 1495 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201373 states. [2024-10-24 01:24:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201373 to 120425. [2024-10-24 01:24:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120425 states, 120424 states have (on average 1.455723111672092) internal successors, (175304), 120424 states have internal predecessors, (175304), 0 states have call successors, (0), 0 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 01:24:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120425 states to 120425 states and 175304 transitions. [2024-10-24 01:24:44,794 INFO L78 Accepts]: Start accepts. Automaton has 120425 states and 175304 transitions. Word has length 107 [2024-10-24 01:24:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:44,795 INFO L471 AbstractCegarLoop]: Abstraction has 120425 states and 175304 transitions. [2024-10-24 01:24:44,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 01:24:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 120425 states and 175304 transitions. [2024-10-24 01:24:44,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:24:44,799 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:44,799 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:44,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:24:44,799 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:44,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -861350241, now seen corresponding path program 1 times [2024-10-24 01:24:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207606316] [2024-10-24 01:24:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:24:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:44,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207606316] [2024-10-24 01:24:44,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207606316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:44,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:44,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:44,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259795896] [2024-10-24 01:24:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:44,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:44,977 INFO L87 Difference]: Start difference. First operand 120425 states and 175304 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 01:24:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:49,374 INFO L93 Difference]: Finished difference Result 242071 states and 355155 transitions. [2024-10-24 01:24:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:24:49,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 107 [2024-10-24 01:24:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:49,663 INFO L225 Difference]: With dead ends: 242071 [2024-10-24 01:24:49,663 INFO L226 Difference]: Without dead ends: 221413 [2024-10-24 01:24:49,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:24:49,704 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 1164 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:49,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1687 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221413 states. [2024-10-24 01:24:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221413 to 140465. [2024-10-24 01:24:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140465 states, 140464 states have (on average 1.4550916960929492) internal successors, (204388), 140464 states have internal predecessors, (204388), 0 states have call successors, (0), 0 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 01:24:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140465 states to 140465 states and 204388 transitions. [2024-10-24 01:24:53,909 INFO L78 Accepts]: Start accepts. Automaton has 140465 states and 204388 transitions. Word has length 107 [2024-10-24 01:24:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:53,909 INFO L471 AbstractCegarLoop]: Abstraction has 140465 states and 204388 transitions. [2024-10-24 01:24:53,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 01:24:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 140465 states and 204388 transitions. [2024-10-24 01:24:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:24:53,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:53,915 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:53,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:24:53,915 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:53,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash 875970664, now seen corresponding path program 1 times [2024-10-24 01:24:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938899574] [2024-10-24 01:24:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:53,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:24:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938899574] [2024-10-24 01:24:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938899574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375058275] [2024-10-24 01:24:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:54,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:54,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:54,081 INFO L87 Difference]: Start difference. First operand 140465 states and 204388 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)