./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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_label37.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 216d354bd2b39cc08159a7e1d05b12b6bb34b7a88f8458e31e862be3f2691415 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:16:21,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:16:21,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:16:21,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:16:21,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:16:21,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:16:21,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:16:21,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:16:21,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:16:21,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:16:21,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:16:21,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:16:21,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:16:21,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:16:21,814 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:16:21,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:16:21,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:16:21,815 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:16:21,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:16:21,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:16:21,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:16:21,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:16:21,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:16:21,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:16:21,818 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:16:21,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:16:21,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:16:21,818 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:16:21,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:16:21,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:16:21,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:16:21,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:16:21,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:16:21,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:16:21,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:16:21,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:16:21,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:16:21,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:16:21,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:16:21,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:16:21,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:16:21,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:16:21,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216d354bd2b39cc08159a7e1d05b12b6bb34b7a88f8458e31e862be3f2691415 [2024-11-08 11:16:22,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:16:22,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:16:22,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:16:22,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:16:22,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:16:22,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label37.c [2024-11-08 11:16:23,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:16:24,002 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:16:24,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label37.c [2024-11-08 11:16:24,040 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9a8ab65/9debeedb575e454e8d55df43e793efec/FLAG50d14c0fc [2024-11-08 11:16:24,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9a8ab65/9debeedb575e454e8d55df43e793efec [2024-11-08 11:16:24,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:16:24,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:16:24,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:16:24,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:16:24,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:16:24,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:16:24" (1/1) ... [2024-11-08 11:16:24,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a44be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:24, skipping insertion in model container [2024-11-08 11:16:24,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:16:24" (1/1) ... [2024-11-08 11:16:24,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:16:24,406 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_label37.c[2005,2018] [2024-11-08 11:16:25,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:16:25,207 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:16:25,226 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_label37.c[2005,2018] [2024-11-08 11:16:25,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:16:25,655 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:16:25,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25 WrapperNode [2024-11-08 11:16:25,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:16:25,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:16:25,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:16:25,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:16:25,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:25,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,059 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-08 11:16:26,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:16:26,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:16:26,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:16:26,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:16:26,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,368 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]. [2024-11-08 11:16:26,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:16:26,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:16:26,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:16:26,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:16:26,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (1/1) ... [2024-11-08 11:16:26,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:16:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:16:26,674 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) [2024-11-08 11:16:26,680 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 [2024-11-08 11:16:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:16:26,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:16:26,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:16:26,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:16:26,808 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:16:26,810 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:16:31,037 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-08 11:16:31,037 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:16:31,081 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:16:31,082 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:16:31,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:16:31 BoogieIcfgContainer [2024-11-08 11:16:31,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:16:31,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:16:31,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:16:31,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:16:31,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:16:24" (1/3) ... [2024-11-08 11:16:31,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47570ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:16:31, skipping insertion in model container [2024-11-08 11:16:31,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:16:25" (2/3) ... [2024-11-08 11:16:31,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47570ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:16:31, skipping insertion in model container [2024-11-08 11:16:31,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:16:31" (3/3) ... [2024-11-08 11:16:31,091 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2024-11-08 11:16:31,108 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:16:31,109 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:16:31,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:16:31,210 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;@3bea92e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:16:31,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:16:31,218 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) [2024-11-08 11:16:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 11:16:31,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:31,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:16:31,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:31,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:31,230 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2024-11-08 11:16:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:31,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350134058] [2024-11-08 11:16:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:16:31,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:31,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350134058] [2024-11-08 11:16:31,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350134058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:31,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:16:31,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:16:31,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431096194] [2024-11-08 11:16:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:31,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:16:31,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:31,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:16:31,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:16:31,486 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:34,945 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-08 11:16:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:16:34,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-08 11:16:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:34,969 INFO L225 Difference]: With dead ends: 2388 [2024-11-08 11:16:34,969 INFO L226 Difference]: Without dead ends: 1506 [2024-11-08 11:16:34,974 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 [2024-11-08 11:16:34,977 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 846 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:34,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-08 11:16:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-08 11:16:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-08 11:16:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2024-11-08 11:16:35,084 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 13 [2024-11-08 11:16:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:35,084 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2024-11-08 11:16:35,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2024-11-08 11:16:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 11:16:35,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:35,088 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:16:35,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:16:35,088 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:35,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1317915872, now seen corresponding path program 1 times [2024-11-08 11:16:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054550026] [2024-11-08 11:16:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:16:35,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:35,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054550026] [2024-11-08 11:16:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054550026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:35,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:16:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:16:35,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372616956] [2024-11-08 11:16:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:35,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:16:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:16:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:16:35,401 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:38,760 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2024-11-08 11:16:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:16:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-11-08 11:16:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:38,774 INFO L225 Difference]: With dead ends: 4514 [2024-11-08 11:16:38,774 INFO L226 Difference]: Without dead ends: 3010 [2024-11-08 11:16:38,778 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 [2024-11-08 11:16:38,780 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:38,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-08 11:16:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2024-11-08 11:16:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2024-11-08 11:16:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2024-11-08 11:16:38,849 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 86 [2024-11-08 11:16:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:38,850 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2024-11-08 11:16:38,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2024-11-08 11:16:38,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 11:16:38,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:38,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:16:38,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:16:38,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:38,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2032696291, now seen corresponding path program 1 times [2024-11-08 11:16:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:38,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615903503] [2024-11-08 11:16:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:16:39,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:39,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615903503] [2024-11-08 11:16:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615903503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:39,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:16:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:16:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581321106] [2024-11-08 11:16:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:39,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:16:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:39,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:16:39,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:16:39,210 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:43,765 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2024-11-08 11:16:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:16:43,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-08 11:16:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:43,785 INFO L225 Difference]: With dead ends: 8267 [2024-11-08 11:16:43,785 INFO L226 Difference]: Without dead ends: 5261 [2024-11-08 11:16:43,790 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 [2024-11-08 11:16:43,795 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:43,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 11:16:43,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-08 11:16:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-08 11:16:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2024-11-08 11:16:43,901 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 99 [2024-11-08 11:16:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:43,901 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2024-11-08 11:16:43,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2024-11-08 11:16:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-08 11:16:43,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:43,906 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:16:43,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:16:43,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:43,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1005399562, now seen corresponding path program 1 times [2024-11-08 11:16:43,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:43,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190003905] [2024-11-08 11:16:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:16:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190003905] [2024-11-08 11:16:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190003905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:16:44,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585592832] [2024-11-08 11:16:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:44,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:16:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:16:44,354 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) [2024-11-08 11:16:44,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:16:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:44,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:16:44,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:16:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 11:16:44,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:16:44,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585592832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:44,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:16:44,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-08 11:16:44,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052139317] [2024-11-08 11:16:44,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:44,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:16:44,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:16:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:16:44,648 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:47,214 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2024-11-08 11:16:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:16:47,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 154 [2024-11-08 11:16:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:47,246 INFO L225 Difference]: With dead ends: 14275 [2024-11-08 11:16:47,246 INFO L226 Difference]: Without dead ends: 9767 [2024-11-08 11:16:47,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:16:47,256 INFO L432 NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:47,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:16:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-08 11:16:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-08 11:16:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2024-11-08 11:16:47,422 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 154 [2024-11-08 11:16:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:47,424 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2024-11-08 11:16:47,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2024-11-08 11:16:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-08 11:16:47,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:47,430 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:16:47,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 11:16:47,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:16:47,632 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1859295125, now seen corresponding path program 1 times [2024-11-08 11:16:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317878023] [2024-11-08 11:16:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:47,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:16:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317878023] [2024-11-08 11:16:47,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317878023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:47,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:16:47,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:16:47,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811595382] [2024-11-08 11:16:47,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:47,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:16:47,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:16:47,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:16:47,998 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:51,313 INFO L93 Difference]: Finished difference Result 23326 states and 32178 transitions. [2024-11-08 11:16:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:16:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-11-08 11:16:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:51,354 INFO L225 Difference]: With dead ends: 23326 [2024-11-08 11:16:51,354 INFO L226 Difference]: Without dead ends: 14275 [2024-11-08 11:16:51,367 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 [2024-11-08 11:16:51,368 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 690 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 4133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:51,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 714 Invalid, 4133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 11:16:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2024-11-08 11:16:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14273. [2024-11-08 11:16:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2780269058295963) internal successors, (18240), 14272 states have internal predecessors, (18240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18240 transitions. [2024-11-08 11:16:51,589 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18240 transitions. Word has length 170 [2024-11-08 11:16:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:51,589 INFO L471 AbstractCegarLoop]: Abstraction has 14273 states and 18240 transitions. [2024-11-08 11:16:51,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18240 transitions. [2024-11-08 11:16:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-08 11:16:51,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:51,593 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 11:16:51,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:16:51,594 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:51,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1739309358, now seen corresponding path program 1 times [2024-11-08 11:16:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028184936] [2024-11-08 11:16:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 11:16:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028184936] [2024-11-08 11:16:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028184936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:51,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:16:51,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:16:51,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131230117] [2024-11-08 11:16:51,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:51,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:16:51,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:16:51,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:16:51,895 INFO L87 Difference]: Start difference. First operand 14273 states and 18240 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:54,703 INFO L93 Difference]: Finished difference Result 39058 states and 50797 transitions. [2024-11-08 11:16:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:16:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 [2024-11-08 11:16:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:54,755 INFO L225 Difference]: With dead ends: 39058 [2024-11-08 11:16:54,755 INFO L226 Difference]: Without dead ends: 25538 [2024-11-08 11:16:54,774 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 [2024-11-08 11:16:54,777 INFO L432 NwaCegarLoop]: 1283 mSDtfsCounter, 753 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:54,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1291 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:16:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-08 11:16:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538. [2024-11-08 11:16:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.2638132905196382) internal successors, (32274), 25537 states have internal predecessors, (32274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 32274 transitions. [2024-11-08 11:16:55,137 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 32274 transitions. Word has length 244 [2024-11-08 11:16:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:55,138 INFO L471 AbstractCegarLoop]: Abstraction has 25538 states and 32274 transitions. [2024-11-08 11:16:55,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 32274 transitions. [2024-11-08 11:16:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-08 11:16:55,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:55,144 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-08 11:16:55,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:16:55,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:55,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 889781951, now seen corresponding path program 1 times [2024-11-08 11:16:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709381060] [2024-11-08 11:16:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-08 11:16:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709381060] [2024-11-08 11:16:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709381060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:55,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:16:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:16:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255039701] [2024-11-08 11:16:55,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:55,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:16:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:55,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:16:55,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:16:55,477 INFO L87 Difference]: Start difference. First operand 25538 states and 32274 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:16:57,973 INFO L93 Difference]: Finished difference Result 50323 states and 63790 transitions. [2024-11-08 11:16:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:16:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 302 [2024-11-08 11:16:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:16:58,013 INFO L225 Difference]: With dead ends: 50323 [2024-11-08 11:16:58,014 INFO L226 Difference]: Without dead ends: 25538 [2024-11-08 11:16:58,040 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 [2024-11-08 11:16:58,041 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 690 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:16:58,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 427 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:16:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-08 11:16:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 22534. [2024-11-08 11:16:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.175742244707762) internal successors, (26493), 22533 states have internal predecessors, (26493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 26493 transitions. [2024-11-08 11:16:58,322 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 26493 transitions. Word has length 302 [2024-11-08 11:16:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:16:58,323 INFO L471 AbstractCegarLoop]: Abstraction has 22534 states and 26493 transitions. [2024-11-08 11:16:58,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:16:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 26493 transitions. [2024-11-08 11:16:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-08 11:16:58,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:16:58,331 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:16:58,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:16:58,333 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:16:58,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:16:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1150048227, now seen corresponding path program 1 times [2024-11-08 11:16:58,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:16:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427207741] [2024-11-08 11:16:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:16:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 73 proven. 230 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-08 11:16:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:16:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427207741] [2024-11-08 11:16:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427207741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:16:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216157159] [2024-11-08 11:16:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:16:58,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:16:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:16:58,943 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) [2024-11-08 11:16:58,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:16:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:16:59,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:16:59,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:16:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 11:16:59,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:16:59,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216157159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:16:59,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:16:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 11:16:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529575748] [2024-11-08 11:16:59,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:16:59,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:16:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:16:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:16:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:16:59,335 INFO L87 Difference]: Start difference. First operand 22534 states and 26493 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:02,020 INFO L93 Difference]: Finished difference Result 60086 states and 71634 transitions. [2024-11-08 11:17:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 392 [2024-11-08 11:17:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:02,081 INFO L225 Difference]: With dead ends: 60086 [2024-11-08 11:17:02,082 INFO L226 Difference]: Without dead ends: 38305 [2024-11-08 11:17:02,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:17:02,107 INFO L432 NwaCegarLoop]: 938 mSDtfsCounter, 668 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:02,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 946 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:17:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2024-11-08 11:17:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 37554. [2024-11-08 11:17:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37554 states, 37553 states have (on average 1.189092748914867) internal successors, (44654), 37553 states have internal predecessors, (44654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 44654 transitions. [2024-11-08 11:17:02,645 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 44654 transitions. Word has length 392 [2024-11-08 11:17:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:02,646 INFO L471 AbstractCegarLoop]: Abstraction has 37554 states and 44654 transitions. [2024-11-08 11:17:02,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 44654 transitions. [2024-11-08 11:17:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-08 11:17:02,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:02,656 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:17:02,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:17:02,857 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,SelfDestructingSolverStorable7 [2024-11-08 11:17:02,857 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:02,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1423960020, now seen corresponding path program 1 times [2024-11-08 11:17:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:02,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527758391] [2024-11-08 11:17:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-08 11:17:03,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:03,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527758391] [2024-11-08 11:17:03,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527758391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:03,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:03,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:03,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472653825] [2024-11-08 11:17:03,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:03,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:03,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:03,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:03,200 INFO L87 Difference]: Start difference. First operand 37554 states and 44654 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:05,683 INFO L93 Difference]: Finished difference Result 95383 states and 114681 transitions. [2024-11-08 11:17:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:05,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 426 [2024-11-08 11:17:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:05,757 INFO L225 Difference]: With dead ends: 95383 [2024-11-08 11:17:05,757 INFO L226 Difference]: Without dead ends: 58582 [2024-11-08 11:17:05,787 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 [2024-11-08 11:17:05,788 INFO L432 NwaCegarLoop]: 1219 mSDtfsCounter, 703 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:05,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1227 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 11:17:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58582 states. [2024-11-08 11:17:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58582 to 57080. [2024-11-08 11:17:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57080 states, 57079 states have (on average 1.1583419471259133) internal successors, (66117), 57079 states have internal predecessors, (66117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 66117 transitions. [2024-11-08 11:17:06,427 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 66117 transitions. Word has length 426 [2024-11-08 11:17:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:06,428 INFO L471 AbstractCegarLoop]: Abstraction has 57080 states and 66117 transitions. [2024-11-08 11:17:06,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 66117 transitions. [2024-11-08 11:17:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-08 11:17:06,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:06,441 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-08 11:17:06,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 11:17:06,441 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:06,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1769775250, now seen corresponding path program 1 times [2024-11-08 11:17:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849046423] [2024-11-08 11:17:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 11:17:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849046423] [2024-11-08 11:17:06,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849046423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:06,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:06,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580956280] [2024-11-08 11:17:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:06,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:06,764 INFO L87 Difference]: Start difference. First operand 57080 states and 66117 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:09,601 INFO L93 Difference]: Finished difference Result 115660 states and 133791 transitions. [2024-11-08 11:17:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:09,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 454 [2024-11-08 11:17:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:09,664 INFO L225 Difference]: With dead ends: 115660 [2024-11-08 11:17:09,664 INFO L226 Difference]: Without dead ends: 59333 [2024-11-08 11:17:09,701 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 [2024-11-08 11:17:09,701 INFO L432 NwaCegarLoop]: 1183 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:09,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1190 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:17:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59333 states. [2024-11-08 11:17:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59333 to 58582. [2024-11-08 11:17:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58582 states, 58581 states have (on average 1.1426742459159114) internal successors, (66939), 58581 states have internal predecessors, (66939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58582 states to 58582 states and 66939 transitions. [2024-11-08 11:17:10,200 INFO L78 Accepts]: Start accepts. Automaton has 58582 states and 66939 transitions. Word has length 454 [2024-11-08 11:17:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:10,201 INFO L471 AbstractCegarLoop]: Abstraction has 58582 states and 66939 transitions. [2024-11-08 11:17:10,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 58582 states and 66939 transitions. [2024-11-08 11:17:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-08 11:17:10,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:10,213 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-08 11:17:10,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:17:10,213 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:10,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1979228196, now seen corresponding path program 1 times [2024-11-08 11:17:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259056075] [2024-11-08 11:17:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:10,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-08 11:17:10,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:10,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259056075] [2024-11-08 11:17:10,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259056075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:10,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859865546] [2024-11-08 11:17:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:10,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:10,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:10,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:10,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:10,901 INFO L87 Difference]: Start difference. First operand 58582 states and 66939 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:13,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:13,897 INFO L93 Difference]: Finished difference Result 140443 states and 162487 transitions. [2024-11-08 11:17:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 458 [2024-11-08 11:17:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:13,991 INFO L225 Difference]: With dead ends: 140443 [2024-11-08 11:17:13,991 INFO L226 Difference]: Without dead ends: 78108 [2024-11-08 11:17:14,029 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 [2024-11-08 11:17:14,030 INFO L432 NwaCegarLoop]: 1313 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:14,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1321 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 11:17:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78108 states. [2024-11-08 11:17:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78108 to 69847. [2024-11-08 11:17:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69847 states, 69846 states have (on average 1.1305300231938837) internal successors, (78963), 69846 states have internal predecessors, (78963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69847 states to 69847 states and 78963 transitions. [2024-11-08 11:17:14,974 INFO L78 Accepts]: Start accepts. Automaton has 69847 states and 78963 transitions. Word has length 458 [2024-11-08 11:17:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:14,975 INFO L471 AbstractCegarLoop]: Abstraction has 69847 states and 78963 transitions. [2024-11-08 11:17:14,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 69847 states and 78963 transitions. [2024-11-08 11:17:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2024-11-08 11:17:15,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:15,004 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:17:15,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:17:15,004 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:15,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2090050652, now seen corresponding path program 1 times [2024-11-08 11:17:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323245961] [2024-11-08 11:17:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 377 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:17:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323245961] [2024-11-08 11:17:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323245961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:17:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362965893] [2024-11-08 11:17:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:17:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:17:18,225 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) [2024-11-08 11:17:18,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:17:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:18,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 11:17:18,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:17:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-08 11:17:19,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:17:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362965893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:19,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:17:19,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-08 11:17:19,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295190315] [2024-11-08 11:17:19,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:19,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:19,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 11:17:19,391 INFO L87 Difference]: Start difference. First operand 69847 states and 78963 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:21,992 INFO L93 Difference]: Finished difference Result 139692 states and 157937 transitions. [2024-11-08 11:17:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 627 [2024-11-08 11:17:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:22,085 INFO L225 Difference]: With dead ends: 139692 [2024-11-08 11:17:22,085 INFO L226 Difference]: Without dead ends: 69847 [2024-11-08 11:17:22,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 11:17:22,127 INFO L432 NwaCegarLoop]: 1307 mSDtfsCounter, 405 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:22,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1314 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:17:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69847 states. [2024-11-08 11:17:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69847 to 69096. [2024-11-08 11:17:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69096 states, 69095 states have (on average 1.1155944713799841) internal successors, (77082), 69095 states have internal predecessors, (77082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69096 states to 69096 states and 77082 transitions. [2024-11-08 11:17:23,129 INFO L78 Accepts]: Start accepts. Automaton has 69096 states and 77082 transitions. Word has length 627 [2024-11-08 11:17:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:23,130 INFO L471 AbstractCegarLoop]: Abstraction has 69096 states and 77082 transitions. [2024-11-08 11:17:23,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 69096 states and 77082 transitions. [2024-11-08 11:17:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-08 11:17:23,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:23,151 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:17:23,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 11:17:23,352 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 [2024-11-08 11:17:23,352 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:23,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:23,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1495004338, now seen corresponding path program 1 times [2024-11-08 11:17:23,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:23,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952239570] [2024-11-08 11:17:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:23,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-08 11:17:23,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:23,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952239570] [2024-11-08 11:17:23,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952239570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:23,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:23,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178799261] [2024-11-08 11:17:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:23,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:23,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:23,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:23,972 INFO L87 Difference]: Start difference. First operand 69096 states and 77082 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:26,848 INFO L93 Difference]: Finished difference Result 159218 states and 178967 transitions. [2024-11-08 11:17:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 637 [2024-11-08 11:17:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:26,951 INFO L225 Difference]: With dead ends: 159218 [2024-11-08 11:17:26,951 INFO L226 Difference]: Without dead ends: 90875 [2024-11-08 11:17:26,994 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 [2024-11-08 11:17:26,995 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 771 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:26,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 111 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:17:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90875 states. [2024-11-08 11:17:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90875 to 90875. [2024-11-08 11:17:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90875 states, 90874 states have (on average 1.1150494090719019) internal successors, (101329), 90874 states have internal predecessors, (101329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90875 states to 90875 states and 101329 transitions. [2024-11-08 11:17:28,013 INFO L78 Accepts]: Start accepts. Automaton has 90875 states and 101329 transitions. Word has length 637 [2024-11-08 11:17:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:28,013 INFO L471 AbstractCegarLoop]: Abstraction has 90875 states and 101329 transitions. [2024-11-08 11:17:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 90875 states and 101329 transitions. [2024-11-08 11:17:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-11-08 11:17:28,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:28,032 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:17:28,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 11:17:28,033 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:28,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash -787800850, now seen corresponding path program 1 times [2024-11-08 11:17:28,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:28,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836329910] [2024-11-08 11:17:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-08 11:17:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836329910] [2024-11-08 11:17:29,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836329910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:29,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:29,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113102031] [2024-11-08 11:17:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:29,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:29,531 INFO L87 Difference]: Start difference. First operand 90875 states and 101329 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:32,406 INFO L93 Difference]: Finished difference Result 182499 states and 203518 transitions. [2024-11-08 11:17:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:32,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 650 [2024-11-08 11:17:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:32,500 INFO L225 Difference]: With dead ends: 182499 [2024-11-08 11:17:32,500 INFO L226 Difference]: Without dead ends: 92377 [2024-11-08 11:17:32,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:32,535 INFO L432 NwaCegarLoop]: 1352 mSDtfsCounter, 402 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:32,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1360 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2247 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:17:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92377 states. [2024-11-08 11:17:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92377 to 92377. [2024-11-08 11:17:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92377 states, 92376 states have (on average 1.10819909933316) internal successors, (102371), 92376 states have internal predecessors, (102371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92377 states to 92377 states and 102371 transitions. [2024-11-08 11:17:33,435 INFO L78 Accepts]: Start accepts. Automaton has 92377 states and 102371 transitions. Word has length 650 [2024-11-08 11:17:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:17:33,435 INFO L471 AbstractCegarLoop]: Abstraction has 92377 states and 102371 transitions. [2024-11-08 11:17:33,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 92377 states and 102371 transitions. [2024-11-08 11:17:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2024-11-08 11:17:33,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:33,449 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:17:33,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 11:17:33,450 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:33,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:33,450 INFO L85 PathProgramCache]: Analyzing trace with hash -144935900, now seen corresponding path program 1 times [2024-11-08 11:17:33,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:33,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631672194] [2024-11-08 11:17:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 11:17:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631672194] [2024-11-08 11:17:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631672194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:34,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:34,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:34,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115614739] [2024-11-08 11:17:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:34,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:17:34,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:17:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:17:34,233 INFO L87 Difference]: Start difference. First operand 92377 states and 102371 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:17:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:17:36,745 INFO L93 Difference]: Finished difference Result 198270 states and 219751 transitions. [2024-11-08 11:17:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:17:36,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 658 [2024-11-08 11:17:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:17:37,088 INFO L225 Difference]: With dead ends: 198270 [2024-11-08 11:17:37,088 INFO L226 Difference]: Without dead ends: 100638 [2024-11-08 11:17:37,130 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 [2024-11-08 11:17:37,131 INFO L432 NwaCegarLoop]: 1343 mSDtfsCounter, 765 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:17:37,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1351 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 11:17:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100638 states.