./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/eca-rers2012/Problem12_label27.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 a6bf1264929a0645d918c583a519b6be036274699656a22f3fed375c55deb5c8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:26:05,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:26:05,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:26:05,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:26:05,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:26:05,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:26:05,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:26:05,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:26:05,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:26:05,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:26:05,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:26:05,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:26:05,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:26:05,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:26:05,656 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:26:05,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:26:05,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:26:05,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:26:05,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:26:05,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:26:05,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:26:05,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:26:05,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:26:05,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:26:05,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:26:05,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:26:05,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:26:05,660 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:26:05,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:26:05,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:26:05,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:26:05,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:26:05,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:26:05,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:26:05,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:26:05,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:26:05,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:26:05,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:26:05,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:26:05,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:26:05,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:26:05,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:26:05,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6bf1264929a0645d918c583a519b6be036274699656a22f3fed375c55deb5c8 [2024-11-18 10:26:05,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:26:05,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:26:05,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:26:05,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:26:05,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:26:05,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label27.c [2024-11-18 10:26:07,269 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:26:07,637 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:26:07,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label27.c [2024-11-18 10:26:07,664 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed69f0819/ec944f563f81468184fe2e162d88a9fb/FLAG65f8842a0 [2024-11-18 10:26:07,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed69f0819/ec944f563f81468184fe2e162d88a9fb [2024-11-18 10:26:07,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:26:07,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:26:07,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:26:07,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:26:07,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:26:07,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:26:07" (1/1) ... [2024-11-18 10:26:07,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bed4826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:07, skipping insertion in model container [2024-11-18 10:26:07,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:26:07" (1/1) ... [2024-11-18 10:26:07,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:26:08,199 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label27.c[4120,4133] [2024-11-18 10:26:08,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:26:08,775 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:26:08,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label27.c[4120,4133] [2024-11-18 10:26:09,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:26:09,087 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:26:09,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09 WrapperNode [2024-11-18 10:26:09,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:26:09,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:26:09,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:26:09,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:26:09,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,378 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-18 10:26:09,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:26:09,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:26:09,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:26:09,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:26:09,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,587 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 10:26:09,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:26:09,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:26:09,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:26:09,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:26:09,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (1/1) ... [2024-11-18 10:26:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:26:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:26:09,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 10:26:09,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 10:26:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:26:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:26:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:26:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:26:09,956 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:26:09,958 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:26:13,678 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-18 10:26:13,679 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:26:13,712 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:26:13,715 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:26:13,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:26:13 BoogieIcfgContainer [2024-11-18 10:26:13,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:26:13,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:26:13,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:26:13,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:26:13,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:26:07" (1/3) ... [2024-11-18 10:26:13,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d72f9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:26:13, skipping insertion in model container [2024-11-18 10:26:13,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:26:09" (2/3) ... [2024-11-18 10:26:13,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d72f9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:26:13, skipping insertion in model container [2024-11-18 10:26:13,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:26:13" (3/3) ... [2024-11-18 10:26:13,722 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27.c [2024-11-18 10:26:13,734 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:26:13,734 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:26:13,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:26:13,814 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;@2c02b581, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:26:13,814 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:26:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 10:26:13,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:13,825 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] [2024-11-18 10:26:13,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:13,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1843609039, now seen corresponding path program 1 times [2024-11-18 10:26:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931557304] [2024-11-18 10:26:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:13,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931557304] [2024-11-18 10:26:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931557304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:14,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:14,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:26:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696674291] [2024-11-18 10:26:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:14,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:14,111 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:17,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:17,160 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-18 10:26:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:17,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-11-18 10:26:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:17,179 INFO L225 Difference]: With dead ends: 2388 [2024-11-18 10:26:17,179 INFO L226 Difference]: Without dead ends: 1506 [2024-11-18 10:26:17,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:17,186 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 866 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:17,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:26:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-18 10:26:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-18 10:26:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2024-11-18 10:26:17,277 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 31 [2024-11-18 10:26:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:17,278 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2024-11-18 10:26:17,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2024-11-18 10:26:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 10:26:17,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:17,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:17,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:26:17,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:17,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1399644642, now seen corresponding path program 1 times [2024-11-18 10:26:17,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:17,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89367016] [2024-11-18 10:26:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:17,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89367016] [2024-11-18 10:26:17,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89367016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:17,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:17,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:26:17,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404334964] [2024-11-18 10:26:17,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:17,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:17,463 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2024-11-18 10:26:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:20,146 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2024-11-18 10:26:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:20,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 100 [2024-11-18 10:26:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:20,155 INFO L225 Difference]: With dead ends: 3761 [2024-11-18 10:26:20,155 INFO L226 Difference]: Without dead ends: 2257 [2024-11-18 10:26:20,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:20,159 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:20,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:26:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-18 10:26:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-18 10:26:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2024-11-18 10:26:20,195 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 100 [2024-11-18 10:26:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:20,196 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2024-11-18 10:26:20,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2024-11-18 10:26:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2024-11-18 10:26:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 10:26:20,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:20,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:20,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:26:20,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:20,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1168094211, now seen corresponding path program 1 times [2024-11-18 10:26:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952399048] [2024-11-18 10:26:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:20,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:20,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952399048] [2024-11-18 10:26:20,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952399048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:26:20,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434511388] [2024-11-18 10:26:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:20,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:26:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:26:20,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:26:20,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:26:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:20,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:26:20,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:26:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:20,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:26:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434511388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:20,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:26:20,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:26:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882839014] [2024-11-18 10:26:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:20,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:20,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:26:20,701 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2024-11-18 10:26:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:23,388 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2024-11-18 10:26:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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 102 [2024-11-18 10:26:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:23,427 INFO L225 Difference]: With dead ends: 6765 [2024-11-18 10:26:23,430 INFO L226 Difference]: Without dead ends: 4510 [2024-11-18 10:26:23,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:26:23,433 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 739 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:23,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 618 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:26:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2024-11-18 10:26:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2024-11-18 10:26:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.2929696163229096) internal successors, (5830), 4509 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5830 transitions. [2024-11-18 10:26:23,499 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5830 transitions. Word has length 102 [2024-11-18 10:26:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:23,501 INFO L471 AbstractCegarLoop]: Abstraction has 4510 states and 5830 transitions. [2024-11-18 10:26:23,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2024-11-18 10:26:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5830 transitions. [2024-11-18 10:26:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-18 10:26:23,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:23,504 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:23,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:26:23,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:26:23,705 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:23,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash -958136910, now seen corresponding path program 1 times [2024-11-18 10:26:23,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:23,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232784667] [2024-11-18 10:26:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:23,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232784667] [2024-11-18 10:26:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232784667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:26:23,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083766471] [2024-11-18 10:26:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:23,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:26:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:23,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:26:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:26:23,886 INFO L87 Difference]: Start difference. First operand 4510 states and 5830 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:27,396 INFO L93 Difference]: Finished difference Result 14275 states and 18284 transitions. [2024-11-18 10:26:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:26:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-18 10:26:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:27,419 INFO L225 Difference]: With dead ends: 14275 [2024-11-18 10:26:27,420 INFO L226 Difference]: Without dead ends: 9767 [2024-11-18 10:26:27,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:26:27,424 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:27,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-18 10:26:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-18 10:26:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-18 10:26:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.255785377841491) internal successors, (12264), 9766 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12264 transitions. [2024-11-18 10:26:27,551 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12264 transitions. Word has length 108 [2024-11-18 10:26:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:27,551 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12264 transitions. [2024-11-18 10:26:27,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12264 transitions. [2024-11-18 10:26:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 10:26:27,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:27,553 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:27,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:26:27,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:27,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash 663593248, now seen corresponding path program 1 times [2024-11-18 10:26:27,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883891657] [2024-11-18 10:26:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:27,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:27,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883891657] [2024-11-18 10:26:27,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883891657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:27,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:27,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:26:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281213321] [2024-11-18 10:26:27,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:27,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:26:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:26:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:26:27,818 INFO L87 Difference]: Start difference. First operand 9767 states and 12264 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:30,171 INFO L93 Difference]: Finished difference Result 21822 states and 27290 transitions. [2024-11-18 10:26:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:26:30,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-11-18 10:26:30,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:30,198 INFO L225 Difference]: With dead ends: 21822 [2024-11-18 10:26:30,198 INFO L226 Difference]: Without dead ends: 12771 [2024-11-18 10:26:30,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:26:30,208 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:30,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 612 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:26:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2024-11-18 10:26:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2024-11-18 10:26:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2085032032615026) internal successors, (14525), 12019 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14525 transitions. [2024-11-18 10:26:30,366 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14525 transitions. Word has length 179 [2024-11-18 10:26:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:30,366 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 14525 transitions. [2024-11-18 10:26:30,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14525 transitions. [2024-11-18 10:26:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-18 10:26:30,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:30,369 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:30,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:26:30,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:30,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 533142505, now seen corresponding path program 1 times [2024-11-18 10:26:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:30,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098740211] [2024-11-18 10:26:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-18 10:26:30,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098740211] [2024-11-18 10:26:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098740211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:26:30,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130462302] [2024-11-18 10:26:30,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:30,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:30,561 INFO L87 Difference]: Start difference. First operand 12020 states and 14525 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:33,080 INFO L93 Difference]: Finished difference Result 31550 states and 38845 transitions. [2024-11-18 10:26:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-18 10:26:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:33,109 INFO L225 Difference]: With dead ends: 31550 [2024-11-18 10:26:33,110 INFO L226 Difference]: Without dead ends: 20283 [2024-11-18 10:26:33,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:33,123 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:33,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 10:26:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20283 states. [2024-11-18 10:26:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20283 to 18779. [2024-11-18 10:26:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1888380019171372) internal successors, (22324), 18778 states have internal predecessors, (22324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 22324 transitions. [2024-11-18 10:26:33,315 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 22324 transitions. Word has length 244 [2024-11-18 10:26:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:33,315 INFO L471 AbstractCegarLoop]: Abstraction has 18779 states and 22324 transitions. [2024-11-18 10:26:33,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 22324 transitions. [2024-11-18 10:26:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-18 10:26:33,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:33,323 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:33,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:26:33,323 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:33,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1736822700, now seen corresponding path program 1 times [2024-11-18 10:26:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302383855] [2024-11-18 10:26:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:33,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 10:26:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302383855] [2024-11-18 10:26:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302383855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:26:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629922413] [2024-11-18 10:26:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:33,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:33,591 INFO L87 Difference]: Start difference. First operand 18779 states and 22324 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:35,703 INFO L93 Difference]: Finished difference Result 43564 states and 53013 transitions. [2024-11-18 10:26:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:35,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 330 [2024-11-18 10:26:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:35,743 INFO L225 Difference]: With dead ends: 43564 [2024-11-18 10:26:35,743 INFO L226 Difference]: Without dead ends: 25538 [2024-11-18 10:26:35,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:35,764 INFO L432 NwaCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:35,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:26:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-18 10:26:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 24036. [2024-11-18 10:26:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.1785313085084252) internal successors, (28326), 24035 states have internal predecessors, (28326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 28326 transitions. [2024-11-18 10:26:36,086 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 28326 transitions. Word has length 330 [2024-11-18 10:26:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:36,087 INFO L471 AbstractCegarLoop]: Abstraction has 24036 states and 28326 transitions. [2024-11-18 10:26:36,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 28326 transitions. [2024-11-18 10:26:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-18 10:26:36,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:36,091 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:36,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:26:36,092 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:36,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1107005626, now seen corresponding path program 1 times [2024-11-18 10:26:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:36,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145237642] [2024-11-18 10:26:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:36,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 10:26:36,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:36,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145237642] [2024-11-18 10:26:36,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145237642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:36,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:36,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:26:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922821245] [2024-11-18 10:26:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:36,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:36,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:36,373 INFO L87 Difference]: Start difference. First operand 24036 states and 28326 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:39,056 INFO L93 Difference]: Finished difference Result 60837 states and 71503 transitions. [2024-11-18 10:26:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 358 [2024-11-18 10:26:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:39,102 INFO L225 Difference]: With dead ends: 60837 [2024-11-18 10:26:39,102 INFO L226 Difference]: Without dead ends: 37554 [2024-11-18 10:26:39,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:39,124 INFO L432 NwaCegarLoop]: 1239 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:39,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1247 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:26:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2024-11-18 10:26:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 35301. [2024-11-18 10:26:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 1.1668555240793201) internal successors, (41190), 35300 states have internal predecessors, (41190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 41190 transitions. [2024-11-18 10:26:39,568 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 41190 transitions. Word has length 358 [2024-11-18 10:26:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:39,568 INFO L471 AbstractCegarLoop]: Abstraction has 35301 states and 41190 transitions. [2024-11-18 10:26:39,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 41190 transitions. [2024-11-18 10:26:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-18 10:26:39,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:39,572 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:39,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:26:39,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:39,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1819166716, now seen corresponding path program 1 times [2024-11-18 10:26:39,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:39,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057443560] [2024-11-18 10:26:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-18 10:26:39,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057443560] [2024-11-18 10:26:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057443560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:26:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382805533] [2024-11-18 10:26:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:39,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:39,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:39,844 INFO L87 Difference]: Start difference. First operand 35301 states and 41190 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:42,321 INFO L93 Difference]: Finished difference Result 102893 states and 120518 transitions. [2024-11-18 10:26:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 362 [2024-11-18 10:26:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:42,416 INFO L225 Difference]: With dead ends: 102893 [2024-11-18 10:26:42,416 INFO L226 Difference]: Without dead ends: 63839 [2024-11-18 10:26:42,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:42,441 INFO L432 NwaCegarLoop]: 1307 mSDtfsCounter, 762 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:42,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:26:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2024-11-18 10:26:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 53325. [2024-11-18 10:26:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53325 states, 53324 states have (on average 1.1311416997974646) internal successors, (60317), 53324 states have internal predecessors, (60317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53325 states to 53325 states and 60317 transitions. [2024-11-18 10:26:43,315 INFO L78 Accepts]: Start accepts. Automaton has 53325 states and 60317 transitions. Word has length 362 [2024-11-18 10:26:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:43,315 INFO L471 AbstractCegarLoop]: Abstraction has 53325 states and 60317 transitions. [2024-11-18 10:26:43,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 53325 states and 60317 transitions. [2024-11-18 10:26:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-18 10:26:43,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:43,324 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:43,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:26:43,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:43,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash 583367852, now seen corresponding path program 1 times [2024-11-18 10:26:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764320205] [2024-11-18 10:26:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 10:26:43,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:43,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764320205] [2024-11-18 10:26:43,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764320205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:43,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:26:43,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:26:43,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289433163] [2024-11-18 10:26:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:43,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:43,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:43,532 INFO L87 Difference]: Start difference. First operand 53325 states and 60317 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:46,170 INFO L93 Difference]: Finished difference Result 135186 states and 154639 transitions. [2024-11-18 10:26:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:26:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 369 [2024-11-18 10:26:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:46,266 INFO L225 Difference]: With dead ends: 135186 [2024-11-18 10:26:46,266 INFO L226 Difference]: Without dead ends: 82614 [2024-11-18 10:26:46,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:26:46,299 INFO L432 NwaCegarLoop]: 1228 mSDtfsCounter, 720 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:46,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1236 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:26:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2024-11-18 10:26:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 76606. [2024-11-18 10:26:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76606 states, 76605 states have (on average 1.1163762156517198) internal successors, (85520), 76605 states have internal predecessors, (85520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76606 states to 76606 states and 85520 transitions. [2024-11-18 10:26:47,238 INFO L78 Accepts]: Start accepts. Automaton has 76606 states and 85520 transitions. Word has length 369 [2024-11-18 10:26:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:47,238 INFO L471 AbstractCegarLoop]: Abstraction has 76606 states and 85520 transitions. [2024-11-18 10:26:47,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 76606 states and 85520 transitions. [2024-11-18 10:26:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-18 10:26:47,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:47,246 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:47,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:26:47,246 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:47,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash 52626568, now seen corresponding path program 1 times [2024-11-18 10:26:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:47,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228931176] [2024-11-18 10:26:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 405 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:26:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228931176] [2024-11-18 10:26:49,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228931176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:26:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439457782] [2024-11-18 10:26:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:49,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:26:49,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:26:49,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:26:49,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:26:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:49,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:26:49,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:26:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-18 10:26:49,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:26:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439457782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:49,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:26:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-18 10:26:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569604982] [2024-11-18 10:26:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:49,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:26:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:26:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:26:49,658 INFO L87 Difference]: Start difference. First operand 76606 states and 85520 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:26:53,961 INFO L93 Difference]: Finished difference Result 236573 states and 265027 transitions. [2024-11-18 10:26:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:26:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 466 [2024-11-18 10:26:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:26:54,149 INFO L225 Difference]: With dead ends: 236573 [2024-11-18 10:26:54,150 INFO L226 Difference]: Without dead ends: 160720 [2024-11-18 10:26:54,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:26:54,194 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1889 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4549 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 4549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:26:54,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 30 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 4549 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-18 10:26:54,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160720 states. [2024-11-18 10:26:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160720 to 159216. [2024-11-18 10:26:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159216 states, 159215 states have (on average 1.1147442137989512) internal successors, (177484), 159215 states have internal predecessors, (177484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159216 states to 159216 states and 177484 transitions. [2024-11-18 10:26:56,589 INFO L78 Accepts]: Start accepts. Automaton has 159216 states and 177484 transitions. Word has length 466 [2024-11-18 10:26:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:26:56,591 INFO L471 AbstractCegarLoop]: Abstraction has 159216 states and 177484 transitions. [2024-11-18 10:26:56,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:26:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 159216 states and 177484 transitions. [2024-11-18 10:26:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-18 10:26:56,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:26:56,611 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:26:56,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 10:26:56,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 10:26:56,813 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:26:56,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:26:56,813 INFO L85 PathProgramCache]: Analyzing trace with hash 918118859, now seen corresponding path program 1 times [2024-11-18 10:26:56,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:26:56,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761860655] [2024-11-18 10:26:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:56,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:26:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 372 proven. 108 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-18 10:26:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:26:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761860655] [2024-11-18 10:26:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761860655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:26:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81603381] [2024-11-18 10:26:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:26:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:26:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:26:57,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:26:57,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:26:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:26:57,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:26:57,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:26:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-18 10:26:57,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:26:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81603381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:26:57,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:26:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:26:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896352367] [2024-11-18 10:26:57,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:26:57,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:26:57,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:26:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:26:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:26:57,867 INFO L87 Difference]: Start difference. First operand 159216 states and 177484 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:01,538 INFO L93 Difference]: Finished difference Result 353727 states and 399084 transitions. [2024-11-18 10:27:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:27:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2024-11-18 10:27:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:01,798 INFO L225 Difference]: With dead ends: 353727 [2024-11-18 10:27:01,798 INFO L226 Difference]: Without dead ends: 195264 [2024-11-18 10:27:01,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:27:01,873 INFO L432 NwaCegarLoop]: 1389 mSDtfsCounter, 650 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:01,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1397 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:27:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195264 states. [2024-11-18 10:27:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195264 to 183999. [2024-11-18 10:27:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183999 states, 183998 states have (on average 1.1064902879379124) internal successors, (203592), 183998 states have internal predecessors, (203592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183999 states to 183999 states and 203592 transitions. [2024-11-18 10:27:04,438 INFO L78 Accepts]: Start accepts. Automaton has 183999 states and 203592 transitions. Word has length 518 [2024-11-18 10:27:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:04,439 INFO L471 AbstractCegarLoop]: Abstraction has 183999 states and 203592 transitions. [2024-11-18 10:27:04,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 183999 states and 203592 transitions. [2024-11-18 10:27:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2024-11-18 10:27:04,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:04,512 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:27:04,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 10:27:04,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:27:04,713 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:04,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1157473097, now seen corresponding path program 1 times [2024-11-18 10:27:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176630692] [2024-11-18 10:27:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-18 10:27:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176630692] [2024-11-18 10:27:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176630692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:05,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:27:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860131720] [2024-11-18 10:27:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:05,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:27:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:27:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:27:05,254 INFO L87 Difference]: Start difference. First operand 183999 states and 203592 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:08,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:08,653 INFO L93 Difference]: Finished difference Result 400289 states and 441188 transitions. [2024-11-18 10:27:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:27:08,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 728 [2024-11-18 10:27:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:08,941 INFO L225 Difference]: With dead ends: 400289 [2024-11-18 10:27:08,941 INFO L226 Difference]: Without dead ends: 217043 [2024-11-18 10:27:09,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:27:09,016 INFO L432 NwaCegarLoop]: 1241 mSDtfsCounter, 421 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:09,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1249 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:27:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217043 states. [2024-11-18 10:27:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217043 to 196015. [2024-11-18 10:27:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196015 states, 196014 states have (on average 1.0948860795657454) internal successors, (214613), 196014 states have internal predecessors, (214613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196015 states to 196015 states and 214613 transitions. [2024-11-18 10:27:11,917 INFO L78 Accepts]: Start accepts. Automaton has 196015 states and 214613 transitions. Word has length 728 [2024-11-18 10:27:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:11,918 INFO L471 AbstractCegarLoop]: Abstraction has 196015 states and 214613 transitions. [2024-11-18 10:27:11,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 196015 states and 214613 transitions. [2024-11-18 10:27:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2024-11-18 10:27:11,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:11,951 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:27:11,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:27:11,951 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:11,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash -772426961, now seen corresponding path program 1 times [2024-11-18 10:27:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744089674] [2024-11-18 10:27:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-11-18 10:27:12,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:12,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744089674] [2024-11-18 10:27:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744089674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:12,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:12,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 10:27:12,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396055245] [2024-11-18 10:27:12,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:12,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:27:12,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:12,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:27:12,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:27:12,982 INFO L87 Difference]: Start difference. First operand 196015 states and 214613 transitions. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:16,162 INFO L93 Difference]: Finished difference Result 394763 states and 432014 transitions. [2024-11-18 10:27:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:27:16,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 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 728 [2024-11-18 10:27:16,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:16,456 INFO L225 Difference]: With dead ends: 394763 [2024-11-18 10:27:16,456 INFO L226 Difference]: Without dead ends: 194244 [2024-11-18 10:27:16,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:27:16,561 INFO L432 NwaCegarLoop]: 1315 mSDtfsCounter, 1588 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:16,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1326 Invalid, 3652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:27:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194244 states. [2024-11-18 10:27:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194244 to 166726. [2024-11-18 10:27:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166726 states, 166725 states have (on average 1.0833948118158645) internal successors, (180629), 166725 states have internal predecessors, (180629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166726 states to 166726 states and 180629 transitions. [2024-11-18 10:27:19,113 INFO L78 Accepts]: Start accepts. Automaton has 166726 states and 180629 transitions. Word has length 728 [2024-11-18 10:27:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:19,113 INFO L471 AbstractCegarLoop]: Abstraction has 166726 states and 180629 transitions. [2024-11-18 10:27:19,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 166726 states and 180629 transitions. [2024-11-18 10:27:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2024-11-18 10:27:19,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:19,142 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:27:19,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:27:19,143 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:19,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 752966117, now seen corresponding path program 1 times [2024-11-18 10:27:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963839384] [2024-11-18 10:27:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-18 10:27:19,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963839384] [2024-11-18 10:27:19,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963839384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:19,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:19,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:27:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121901342] [2024-11-18 10:27:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:19,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:27:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:19,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:27:19,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:27:19,811 INFO L87 Difference]: Start difference. First operand 166726 states and 180629 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:23,507 INFO L93 Difference]: Finished difference Result 415309 states and 450133 transitions. [2024-11-18 10:27:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:27:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 736 [2024-11-18 10:27:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:23,837 INFO L225 Difference]: With dead ends: 415309 [2024-11-18 10:27:23,838 INFO L226 Difference]: Without dead ends: 249336 [2024-11-18 10:27:23,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:27:23,936 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:23,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 354 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:27:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249336 states. [2024-11-18 10:27:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249336 to 229059. [2024-11-18 10:27:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229059 states, 229058 states have (on average 1.08248565865414) internal successors, (247952), 229058 states have internal predecessors, (247952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229059 states to 229059 states and 247952 transitions. [2024-11-18 10:27:27,158 INFO L78 Accepts]: Start accepts. Automaton has 229059 states and 247952 transitions. Word has length 736 [2024-11-18 10:27:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:27,159 INFO L471 AbstractCegarLoop]: Abstraction has 229059 states and 247952 transitions. [2024-11-18 10:27:27,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:27:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 229059 states and 247952 transitions. [2024-11-18 10:27:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2024-11-18 10:27:27,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:27,183 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:27:27,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:27:27,183 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:27,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2146268274, now seen corresponding path program 1 times [2024-11-18 10:27:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:27,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136609327] [2024-11-18 10:27:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:27,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat