./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/Problem03_label54.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 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:42:11,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:42:12,046 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:42:12,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:42:12,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:42:12,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:42:12,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:42:12,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:42:12,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:42:12,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:42:12,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:42:12,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:42:12,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:42:12,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:42:12,089 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:42:12,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:42:12,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:42:12,090 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:42:12,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:42:12,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:42:12,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:42:12,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:42:12,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:42:12,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:42:12,092 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:42:12,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:42:12,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:42:12,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:42:12,094 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:42:12,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:42:12,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:42:12,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:42:12,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:42:12,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:42:12,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:42:12,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:42:12,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:42:12,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:42:12,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:42:12,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:42:12,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:42:12,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:42:12,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 [2024-11-09 18:42:12,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:42:12,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:42:12,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:42:12,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:42:12,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:42:12,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2024-11-09 18:42:13,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:42:14,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:42:14,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2024-11-09 18:42:14,229 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e60f804/b907067b09cd4ac1b7850c6cb81cd6c5/FLAG322f8f0c3 [2024-11-09 18:42:14,246 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e60f804/b907067b09cd4ac1b7850c6cb81cd6c5 [2024-11-09 18:42:14,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:42:14,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:42:14,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:42:14,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:42:14,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:42:14,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:42:14" (1/1) ... [2024-11-09 18:42:14,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f86fc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:14, skipping insertion in model container [2024-11-09 18:42:14,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:42:14" (1/1) ... [2024-11-09 18:42:14,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:42:14,854 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/Problem03_label54.c[56627,56640] [2024-11-09 18:42:14,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:42:14,913 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:42:15,078 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/Problem03_label54.c[56627,56640] [2024-11-09 18:42:15,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:42:15,117 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:42:15,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15 WrapperNode [2024-11-09 18:42:15,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:42:15,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:42:15,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:42:15,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:42:15,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,255 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:42:15,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:42:15,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:42:15,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:42:15,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:42:15,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,334 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]. [2024-11-09 18:42:15,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,456 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:42:15,527 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:42:15,527 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:42:15,527 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:42:15,528 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (1/1) ... [2024-11-09 18:42:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:42:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:15,562 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) [2024-11-09 18:42:15,570 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 [2024-11-09 18:42:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:42:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:42:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:42:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:42:15,708 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:42:15,710 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:42:17,632 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:42:17,632 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:42:17,652 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:42:17,652 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:42:17,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:42:17 BoogieIcfgContainer [2024-11-09 18:42:17,653 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:42:17,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:42:17,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:42:17,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:42:17,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:42:14" (1/3) ... [2024-11-09 18:42:17,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c13e4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:42:17, skipping insertion in model container [2024-11-09 18:42:17,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:15" (2/3) ... [2024-11-09 18:42:17,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c13e4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:42:17, skipping insertion in model container [2024-11-09 18:42:17,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:42:17" (3/3) ... [2024-11-09 18:42:17,663 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2024-11-09 18:42:17,680 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:42:17,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:42:17,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:42:17,765 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;@1b6687f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:42:17,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:42:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-09 18:42:17,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:17,788 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:17,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:17,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash -181270187, now seen corresponding path program 1 times [2024-11-09 18:42:17,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171110416] [2024-11-09 18:42:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171110416] [2024-11-09 18:42:18,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171110416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:18,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:18,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757106587] [2024-11-09 18:42:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:18,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:18,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:18,822 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 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 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:19,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:19,994 INFO L93 Difference]: Finished difference Result 863 states and 1504 transitions. [2024-11-09 18:42:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:19,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-09 18:42:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:20,014 INFO L225 Difference]: With dead ends: 863 [2024-11-09 18:42:20,015 INFO L226 Difference]: Without dead ends: 465 [2024-11-09 18:42:20,022 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 [2024-11-09 18:42:20,026 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 122 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:20,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 191 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 18:42:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-09 18:42:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463. [2024-11-09 18:42:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.5346320346320346) internal successors, (709), 462 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 709 transitions. [2024-11-09 18:42:20,111 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 709 transitions. Word has length 168 [2024-11-09 18:42:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:20,112 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 709 transitions. [2024-11-09 18:42:20,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 709 transitions. [2024-11-09 18:42:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 18:42:20,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:20,117 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:20,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:42:20,117 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:20,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -414385573, now seen corresponding path program 1 times [2024-11-09 18:42:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841389785] [2024-11-09 18:42:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:20,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841389785] [2024-11-09 18:42:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841389785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:20,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:20,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:20,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670419572] [2024-11-09 18:42:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:20,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:20,449 INFO L87 Difference]: Start difference. First operand 463 states and 709 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:21,314 INFO L93 Difference]: Finished difference Result 1352 states and 2087 transitions. [2024-11-09 18:42:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2024-11-09 18:42:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:21,319 INFO L225 Difference]: With dead ends: 1352 [2024-11-09 18:42:21,319 INFO L226 Difference]: Without dead ends: 891 [2024-11-09 18:42:21,320 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 [2024-11-09 18:42:21,322 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 247 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:21,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:42:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-09 18:42:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 875. [2024-11-09 18:42:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.5091533180778032) internal successors, (1319), 874 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1319 transitions. [2024-11-09 18:42:21,362 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1319 transitions. Word has length 177 [2024-11-09 18:42:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:21,363 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1319 transitions. [2024-11-09 18:42:21,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1319 transitions. [2024-11-09 18:42:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-09 18:42:21,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:21,368 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2024-11-09 18:42:21,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:42:21,369 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:21,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:21,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1325800032, now seen corresponding path program 1 times [2024-11-09 18:42:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307993311] [2024-11-09 18:42:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:42:21,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307993311] [2024-11-09 18:42:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307993311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879521036] [2024-11-09 18:42:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:21,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:21,746 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) [2024-11-09 18:42:21,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:42:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:21,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:21,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:42:22,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:22,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879521036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:22,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:42:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534951618] [2024-11-09 18:42:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:22,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:22,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:22,039 INFO L87 Difference]: Start difference. First operand 875 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:22,322 INFO L93 Difference]: Finished difference Result 2616 states and 3948 transitions. [2024-11-09 18:42:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:22,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 191 [2024-11-09 18:42:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:22,331 INFO L225 Difference]: With dead ends: 2616 [2024-11-09 18:42:22,334 INFO L226 Difference]: Without dead ends: 1743 [2024-11-09 18:42:22,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:22,339 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 361 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:22,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 605 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:42:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2024-11-09 18:42:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1738. [2024-11-09 18:42:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 1.5100748416810592) internal successors, (2623), 1737 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2623 transitions. [2024-11-09 18:42:22,384 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2623 transitions. Word has length 191 [2024-11-09 18:42:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:22,385 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 2623 transitions. [2024-11-09 18:42:22,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2623 transitions. [2024-11-09 18:42:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-09 18:42:22,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:22,390 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:22,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:42:22,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:22,591 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:22,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1505824446, now seen corresponding path program 1 times [2024-11-09 18:42:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:22,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70596883] [2024-11-09 18:42:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:22,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70596883] [2024-11-09 18:42:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70596883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:22,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:22,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971549627] [2024-11-09 18:42:22,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:22,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:22,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:22,838 INFO L87 Difference]: Start difference. First operand 1738 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:23,718 INFO L93 Difference]: Finished difference Result 5136 states and 7767 transitions. [2024-11-09 18:42:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-11-09 18:42:23,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:23,732 INFO L225 Difference]: With dead ends: 5136 [2024-11-09 18:42:23,732 INFO L226 Difference]: Without dead ends: 3400 [2024-11-09 18:42:23,737 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 [2024-11-09 18:42:23,741 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 242 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:23,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 179 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:42:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2024-11-09 18:42:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3395. [2024-11-09 18:42:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3395 states, 3394 states have (on average 1.4360636417206836) internal successors, (4874), 3394 states have internal predecessors, (4874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4874 transitions. [2024-11-09 18:42:23,825 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4874 transitions. Word has length 192 [2024-11-09 18:42:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:23,826 INFO L471 AbstractCegarLoop]: Abstraction has 3395 states and 4874 transitions. [2024-11-09 18:42:23,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4874 transitions. [2024-11-09 18:42:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 18:42:23,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:23,833 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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] [2024-11-09 18:42:23,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:42:23,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:23,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 707968187, now seen corresponding path program 1 times [2024-11-09 18:42:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591378441] [2024-11-09 18:42:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:23,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:24,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591378441] [2024-11-09 18:42:24,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591378441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465508419] [2024-11-09 18:42:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:24,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:24,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:24,136 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) [2024-11-09 18:42:24,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:42:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:24,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:24,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:42:24,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:24,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465508419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:24,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:24,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:42:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152551339] [2024-11-09 18:42:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:24,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:24,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:24,363 INFO L87 Difference]: Start difference. First operand 3395 states and 4874 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:25,215 INFO L93 Difference]: Finished difference Result 10058 states and 14452 transitions. [2024-11-09 18:42:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 193 [2024-11-09 18:42:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:25,238 INFO L225 Difference]: With dead ends: 10058 [2024-11-09 18:42:25,239 INFO L226 Difference]: Without dead ends: 6665 [2024-11-09 18:42:25,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:25,246 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 232 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:25,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:42:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2024-11-09 18:42:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6659. [2024-11-09 18:42:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6659 states, 6658 states have (on average 1.2829678582156805) internal successors, (8542), 6658 states have internal predecessors, (8542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 8542 transitions. [2024-11-09 18:42:25,397 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 8542 transitions. Word has length 193 [2024-11-09 18:42:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:25,398 INFO L471 AbstractCegarLoop]: Abstraction has 6659 states and 8542 transitions. [2024-11-09 18:42:25,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 8542 transitions. [2024-11-09 18:42:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-09 18:42:25,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:25,409 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-11-09 18:42:25,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:42:25,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:25,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:25,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:25,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1740336877, now seen corresponding path program 1 times [2024-11-09 18:42:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:25,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610816801] [2024-11-09 18:42:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:25,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 18:42:25,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610816801] [2024-11-09 18:42:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610816801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055830271] [2024-11-09 18:42:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:25,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:25,799 INFO L87 Difference]: Start difference. First operand 6659 states and 8542 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:26,285 INFO L93 Difference]: Finished difference Result 13252 states and 16996 transitions. [2024-11-09 18:42:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-09 18:42:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:26,308 INFO L225 Difference]: With dead ends: 13252 [2024-11-09 18:42:26,309 INFO L226 Difference]: Without dead ends: 6595 [2024-11-09 18:42:26,318 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 [2024-11-09 18:42:26,321 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:26,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:42:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2024-11-09 18:42:26,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6595. [2024-11-09 18:42:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6595 states, 6594 states have (on average 1.2544737640279042) internal successors, (8272), 6594 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6595 states to 6595 states and 8272 transitions. [2024-11-09 18:42:26,463 INFO L78 Accepts]: Start accepts. Automaton has 6595 states and 8272 transitions. Word has length 206 [2024-11-09 18:42:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:26,464 INFO L471 AbstractCegarLoop]: Abstraction has 6595 states and 8272 transitions. [2024-11-09 18:42:26,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6595 states and 8272 transitions. [2024-11-09 18:42:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-09 18:42:26,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:26,475 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:42:26,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:42:26,475 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:26,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash -57214866, now seen corresponding path program 1 times [2024-11-09 18:42:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:26,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318604388] [2024-11-09 18:42:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:26,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318604388] [2024-11-09 18:42:26,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318604388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:26,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:26,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:26,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416516777] [2024-11-09 18:42:26,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:26,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:26,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:26,834 INFO L87 Difference]: Start difference. First operand 6595 states and 8272 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:27,672 INFO L93 Difference]: Finished difference Result 16476 states and 20606 transitions. [2024-11-09 18:42:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-11-09 18:42:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:27,713 INFO L225 Difference]: With dead ends: 16476 [2024-11-09 18:42:27,714 INFO L226 Difference]: Without dead ends: 9883 [2024-11-09 18:42:27,725 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 [2024-11-09 18:42:27,726 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 196 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:27,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 110 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:42:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2024-11-09 18:42:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 9881. [2024-11-09 18:42:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9881 states, 9880 states have (on average 1.2384615384615385) internal successors, (12236), 9880 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9881 states to 9881 states and 12236 transitions. [2024-11-09 18:42:28,037 INFO L78 Accepts]: Start accepts. Automaton has 9881 states and 12236 transitions. Word has length 210 [2024-11-09 18:42:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:28,038 INFO L471 AbstractCegarLoop]: Abstraction has 9881 states and 12236 transitions. [2024-11-09 18:42:28,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9881 states and 12236 transitions. [2024-11-09 18:42:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-09 18:42:28,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:28,055 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:28,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 18:42:28,056 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:28,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:28,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2048132033, now seen corresponding path program 1 times [2024-11-09 18:42:28,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:28,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896618738] [2024-11-09 18:42:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:28,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:28,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896618738] [2024-11-09 18:42:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896618738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730339718] [2024-11-09 18:42:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:28,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:28,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:28,632 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) [2024-11-09 18:42:28,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:42:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:28,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:42:28,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:42:29,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730339718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:29,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:42:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414138434] [2024-11-09 18:42:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:29,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:29,011 INFO L87 Difference]: Start difference. First operand 9881 states and 12236 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:29,877 INFO L93 Difference]: Finished difference Result 28762 states and 35666 transitions. [2024-11-09 18:42:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:29,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 218 [2024-11-09 18:42:29,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:29,911 INFO L225 Difference]: With dead ends: 28762 [2024-11-09 18:42:29,912 INFO L226 Difference]: Without dead ends: 18883 [2024-11-09 18:42:29,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:29,929 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 71 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:29,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 359 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:42:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18883 states. [2024-11-09 18:42:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18883 to 18873. [2024-11-09 18:42:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18873 states, 18872 states have (on average 1.2077151335311573) internal successors, (22792), 18872 states have internal predecessors, (22792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18873 states to 18873 states and 22792 transitions. [2024-11-09 18:42:30,285 INFO L78 Accepts]: Start accepts. Automaton has 18873 states and 22792 transitions. Word has length 218 [2024-11-09 18:42:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:30,286 INFO L471 AbstractCegarLoop]: Abstraction has 18873 states and 22792 transitions. [2024-11-09 18:42:30,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 18873 states and 22792 transitions. [2024-11-09 18:42:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-09 18:42:30,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:30,314 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:42:30,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:42:30,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:30,515 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:30,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1592194139, now seen corresponding path program 1 times [2024-11-09 18:42:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247122687] [2024-11-09 18:42:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:30,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:42:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247122687] [2024-11-09 18:42:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247122687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:30,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:30,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:42:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950115415] [2024-11-09 18:42:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:30,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:30,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:30,835 INFO L87 Difference]: Start difference. First operand 18873 states and 22792 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:31,818 INFO L93 Difference]: Finished difference Result 45292 states and 55759 transitions. [2024-11-09 18:42:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 233 [2024-11-09 18:42:31,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:31,874 INFO L225 Difference]: With dead ends: 45292 [2024-11-09 18:42:31,875 INFO L226 Difference]: Without dead ends: 26421 [2024-11-09 18:42:31,905 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 [2024-11-09 18:42:31,908 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 215 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:31,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 151 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:42:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26421 states. [2024-11-09 18:42:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26421 to 26421. [2024-11-09 18:42:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26421 states, 26420 states have (on average 1.172104466313399) internal successors, (30967), 26420 states have internal predecessors, (30967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26421 states to 26421 states and 30967 transitions. [2024-11-09 18:42:32,496 INFO L78 Accepts]: Start accepts. Automaton has 26421 states and 30967 transitions. Word has length 233 [2024-11-09 18:42:32,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:32,496 INFO L471 AbstractCegarLoop]: Abstraction has 26421 states and 30967 transitions. [2024-11-09 18:42:32,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 26421 states and 30967 transitions. [2024-11-09 18:42:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-09 18:42:32,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:32,525 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:42:32,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 18:42:32,526 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:32,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash 785061064, now seen corresponding path program 1 times [2024-11-09 18:42:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425313258] [2024-11-09 18:42:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:42:32,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:32,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425313258] [2024-11-09 18:42:32,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425313258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:32,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:32,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:42:32,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967685629] [2024-11-09 18:42:32,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:32,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:32,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:32,752 INFO L87 Difference]: Start difference. First operand 26421 states and 30967 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:33,662 INFO L93 Difference]: Finished difference Result 66952 states and 79024 transitions. [2024-11-09 18:42:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2024-11-09 18:42:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:33,941 INFO L225 Difference]: With dead ends: 66952 [2024-11-09 18:42:33,941 INFO L226 Difference]: Without dead ends: 40533 [2024-11-09 18:42:33,979 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 [2024-11-09 18:42:33,980 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 63 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:33,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 331 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:42:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40533 states. [2024-11-09 18:42:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40533 to 40497. [2024-11-09 18:42:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40497 states, 40496 states have (on average 1.1711527064401421) internal successors, (47427), 40496 states have internal predecessors, (47427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40497 states to 40497 states and 47427 transitions. [2024-11-09 18:42:34,608 INFO L78 Accepts]: Start accepts. Automaton has 40497 states and 47427 transitions. Word has length 243 [2024-11-09 18:42:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:34,609 INFO L471 AbstractCegarLoop]: Abstraction has 40497 states and 47427 transitions. [2024-11-09 18:42:34,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 40497 states and 47427 transitions. [2024-11-09 18:42:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-09 18:42:34,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:34,643 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:42:34,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:42:34,643 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:34,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -605114982, now seen corresponding path program 1 times [2024-11-09 18:42:34,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715208959] [2024-11-09 18:42:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:42:35,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715208959] [2024-11-09 18:42:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715208959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069944514] [2024-11-09 18:42:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:35,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:35,218 INFO L87 Difference]: Start difference. First operand 40497 states and 47427 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:36,329 INFO L93 Difference]: Finished difference Result 102886 states and 120366 transitions. [2024-11-09 18:42:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 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 259 [2024-11-09 18:42:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:36,442 INFO L225 Difference]: With dead ends: 102886 [2024-11-09 18:42:36,442 INFO L226 Difference]: Without dead ends: 62391 [2024-11-09 18:42:36,488 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 [2024-11-09 18:42:36,489 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 157 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:36,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 156 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:42:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62391 states. [2024-11-09 18:42:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62391 to 61977. [2024-11-09 18:42:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61977 states, 61976 states have (on average 1.1682425455014844) internal successors, (72403), 61976 states have internal predecessors, (72403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61977 states to 61977 states and 72403 transitions. [2024-11-09 18:42:37,664 INFO L78 Accepts]: Start accepts. Automaton has 61977 states and 72403 transitions. Word has length 259 [2024-11-09 18:42:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:37,664 INFO L471 AbstractCegarLoop]: Abstraction has 61977 states and 72403 transitions. [2024-11-09 18:42:37,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 61977 states and 72403 transitions. [2024-11-09 18:42:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-09 18:42:37,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:37,705 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:42:37,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:42:37,705 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:37,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1070211417, now seen corresponding path program 2 times [2024-11-09 18:42:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:37,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132693043] [2024-11-09 18:42:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 111 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:42:39,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:39,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132693043] [2024-11-09 18:42:39,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132693043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:39,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715824717] [2024-11-09 18:42:39,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:42:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:39,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:39,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:42:39,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:42:39,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:42:39,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:39,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 18:42:39,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715824717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:39,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:39,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:42:39,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458088602] [2024-11-09 18:42:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:39,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:39,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:39,952 INFO L87 Difference]: Start difference. First operand 61977 states and 72403 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:40,818 INFO L93 Difference]: Finished difference Result 123556 states and 144394 transitions. [2024-11-09 18:42:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 267 [2024-11-09 18:42:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:40,904 INFO L225 Difference]: With dead ends: 123556 [2024-11-09 18:42:40,905 INFO L226 Difference]: Without dead ends: 61581 [2024-11-09 18:42:40,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:40,952 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 98 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:40,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 295 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:42:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61581 states. [2024-11-09 18:42:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61581 to 61569. [2024-11-09 18:42:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61569 states, 61568 states have (on average 1.1604567307692308) internal successors, (71447), 61568 states have internal predecessors, (71447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:41,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61569 states to 61569 states and 71447 transitions. [2024-11-09 18:42:42,000 INFO L78 Accepts]: Start accepts. Automaton has 61569 states and 71447 transitions. Word has length 267 [2024-11-09 18:42:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:42,001 INFO L471 AbstractCegarLoop]: Abstraction has 61569 states and 71447 transitions. [2024-11-09 18:42:42,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 61569 states and 71447 transitions. [2024-11-09 18:42:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-09 18:42:42,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:42,055 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 18:42:42,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:42:42,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:42,256 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:42,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1105422922, now seen corresponding path program 1 times [2024-11-09 18:42:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236137231] [2024-11-09 18:42:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 181 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 18:42:44,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236137231] [2024-11-09 18:42:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236137231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117159806] [2024-11-09 18:42:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:44,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:44,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:44,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:42:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:44,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:42:44,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:42:44,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117159806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:44,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:44,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 18:42:44,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066817678] [2024-11-09 18:42:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:44,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:44,462 INFO L87 Difference]: Start difference. First operand 61569 states and 71447 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:45,247 INFO L93 Difference]: Finished difference Result 122782 states and 142410 transitions. [2024-11-09 18:42:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 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 337 [2024-11-09 18:42:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:45,329 INFO L225 Difference]: With dead ends: 122782 [2024-11-09 18:42:45,330 INFO L226 Difference]: Without dead ends: 61215 [2024-11-09 18:42:45,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:42:45,382 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 155 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:45,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 133 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:42:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61215 states. [2024-11-09 18:42:46,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61215 to 61161. [2024-11-09 18:42:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61161 states, 61160 states have (on average 1.1556572923479398) internal successors, (70680), 61160 states have internal predecessors, (70680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61161 states to 61161 states and 70680 transitions. [2024-11-09 18:42:46,443 INFO L78 Accepts]: Start accepts. Automaton has 61161 states and 70680 transitions. Word has length 337 [2024-11-09 18:42:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:46,443 INFO L471 AbstractCegarLoop]: Abstraction has 61161 states and 70680 transitions. [2024-11-09 18:42:46,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 61161 states and 70680 transitions. [2024-11-09 18:42:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-09 18:42:46,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:46,494 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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] [2024-11-09 18:42:46,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:42:46,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:42:46,695 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:46,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash -274361019, now seen corresponding path program 1 times [2024-11-09 18:42:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:46,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880823744] [2024-11-09 18:42:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:46,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-09 18:42:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880823744] [2024-11-09 18:42:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880823744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:47,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:42:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760293832] [2024-11-09 18:42:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:47,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:42:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:42:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:42:47,165 INFO L87 Difference]: Start difference. First operand 61161 states and 70680 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:48,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:48,281 INFO L93 Difference]: Finished difference Result 125632 states and 145114 transitions. [2024-11-09 18:42:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:42:48,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 357 [2024-11-09 18:42:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:48,364 INFO L225 Difference]: With dead ends: 125632 [2024-11-09 18:42:48,364 INFO L226 Difference]: Without dead ends: 64473 [2024-11-09 18:42:48,408 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 [2024-11-09 18:42:48,409 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 474 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:48,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 84 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:42:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64473 states. [2024-11-09 18:42:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64473 to 64419. [2024-11-09 18:42:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64419 states, 64418 states have (on average 1.1323698345183024) internal successors, (72945), 64418 states have internal predecessors, (72945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64419 states to 64419 states and 72945 transitions. [2024-11-09 18:42:49,587 INFO L78 Accepts]: Start accepts. Automaton has 64419 states and 72945 transitions. Word has length 357 [2024-11-09 18:42:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:49,588 INFO L471 AbstractCegarLoop]: Abstraction has 64419 states and 72945 transitions. [2024-11-09 18:42:49,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 64419 states and 72945 transitions. [2024-11-09 18:42:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-09 18:42:49,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:49,640 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 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, 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] [2024-11-09 18:42:49,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 18:42:49,640 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:49,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1863832864, now seen corresponding path program 1 times [2024-11-09 18:42:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:49,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467822600] [2024-11-09 18:42:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:49,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 123 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-09 18:42:50,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:50,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467822600] [2024-11-09 18:42:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467822600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969088443] [2024-11-09 18:42:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:50,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:50,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:50,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:50,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:42:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:50,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:42:50,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 18:42:50,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:50,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969088443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:50,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:50,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:42:50,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594388979] [2024-11-09 18:42:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:50,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:50,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:50,641 INFO L87 Difference]: Start difference. First operand 64419 states and 72945 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:51,377 INFO L93 Difference]: Finished difference Result 123297 states and 139225 transitions. [2024-11-09 18:42:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 364 [2024-11-09 18:42:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:51,452 INFO L225 Difference]: With dead ends: 123297 [2024-11-09 18:42:51,452 INFO L226 Difference]: Without dead ends: 58880 [2024-11-09 18:42:51,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:51,492 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:51,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 339 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:42:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58880 states. [2024-11-09 18:42:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58880 to 58873. [2024-11-09 18:42:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58873 states, 58872 states have (on average 1.1015593151243375) internal successors, (64851), 58872 states have internal predecessors, (64851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58873 states to 58873 states and 64851 transitions. [2024-11-09 18:42:52,678 INFO L78 Accepts]: Start accepts. Automaton has 58873 states and 64851 transitions. Word has length 364 [2024-11-09 18:42:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:52,678 INFO L471 AbstractCegarLoop]: Abstraction has 58873 states and 64851 transitions. [2024-11-09 18:42:52,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 58873 states and 64851 transitions. [2024-11-09 18:42:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-09 18:42:52,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:52,715 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 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, 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] [2024-11-09 18:42:52,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:42:52,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:42:52,917 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1500954621, now seen corresponding path program 1 times [2024-11-09 18:42:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182645414] [2024-11-09 18:42:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 132 proven. 7 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-09 18:42:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182645414] [2024-11-09 18:42:53,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182645414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:42:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642426732] [2024-11-09 18:42:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:53,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:53,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:42:53,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:42:53,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:42:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:53,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:42:53,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:42:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-09 18:42:53,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:42:53,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642426732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:53,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:42:53,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:42:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173233741] [2024-11-09 18:42:53,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:53,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:53,709 INFO L87 Difference]: Start difference. First operand 58873 states and 64851 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:54,316 INFO L93 Difference]: Finished difference Result 164106 states and 180686 transitions. [2024-11-09 18:42:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 371 [2024-11-09 18:42:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:54,454 INFO L225 Difference]: With dead ends: 164106 [2024-11-09 18:42:54,454 INFO L226 Difference]: Without dead ends: 105235 [2024-11-09 18:42:54,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:54,510 INFO L432 NwaCegarLoop]: 585 mSDtfsCounter, 290 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:54,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 848 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:42:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105235 states. [2024-11-09 18:42:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105235 to 105231. [2024-11-09 18:42:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105231 states, 105230 states have (on average 1.0920935094554785) internal successors, (114921), 105230 states have internal predecessors, (114921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105231 states to 105231 states and 114921 transitions. [2024-11-09 18:42:56,471 INFO L78 Accepts]: Start accepts. Automaton has 105231 states and 114921 transitions. Word has length 371 [2024-11-09 18:42:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:42:56,472 INFO L471 AbstractCegarLoop]: Abstraction has 105231 states and 114921 transitions. [2024-11-09 18:42:56,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 105231 states and 114921 transitions. [2024-11-09 18:42:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 18:42:56,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:42:56,556 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:42:56,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:42:56,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:42:56,757 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:42:56,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:42:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1835237709, now seen corresponding path program 1 times [2024-11-09 18:42:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:42:56,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843851746] [2024-11-09 18:42:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:42:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:42:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:42:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:42:57,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:42:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843851746] [2024-11-09 18:42:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843851746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:42:57,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:42:57,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:42:57,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431824487] [2024-11-09 18:42:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:42:57,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:42:57,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:42:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:42:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:42:57,010 INFO L87 Difference]: Start difference. First operand 105231 states and 114921 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:42:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:58,219 INFO L93 Difference]: Finished difference Result 310179 states and 338836 transitions. [2024-11-09 18:42:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:58,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 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 385 [2024-11-09 18:42:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:58,499 INFO L225 Difference]: With dead ends: 310179 [2024-11-09 18:42:58,500 INFO L226 Difference]: Without dead ends: 204950 [2024-11-09 18:42:58,582 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 [2024-11-09 18:42:58,583 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 212 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:58,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 529 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:42:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204950 states. [2024-11-09 18:43:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204950 to 204947. [2024-11-09 18:43:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204947 states, 204946 states have (on average 1.0921803792218439) internal successors, (223838), 204946 states have internal predecessors, (223838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204947 states to 204947 states and 223838 transitions. [2024-11-09 18:43:02,854 INFO L78 Accepts]: Start accepts. Automaton has 204947 states and 223838 transitions. Word has length 385 [2024-11-09 18:43:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:02,854 INFO L471 AbstractCegarLoop]: Abstraction has 204947 states and 223838 transitions. [2024-11-09 18:43:02,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 204947 states and 223838 transitions. [2024-11-09 18:43:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 18:43:02,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:43:02,986 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 18:43:02,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 18:43:02,986 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:43:02,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:43:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash 764419735, now seen corresponding path program 1 times [2024-11-09 18:43:02,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:43:02,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126044875] [2024-11-09 18:43:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:02,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:43:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 123 proven. 7 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-09 18:43:03,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:43:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126044875] [2024-11-09 18:43:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126044875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:43:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014405476] [2024-11-09 18:43:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:43:03,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:43:03,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:43:03,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:43:03,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:43:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:43:03,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:43:03,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:43:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 18:43:03,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:43:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014405476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:43:03,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:43:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:43:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616734799] [2024-11-09 18:43:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:43:03,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:43:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:43:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:43:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:43:03,688 INFO L87 Difference]: Start difference. First operand 204947 states and 223838 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) [2024-11-09 18:43:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:43:05,744 INFO L93 Difference]: Finished difference Result 399877 states and 436684 transitions. [2024-11-09 18:43:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:43:05,744 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 385 [2024-11-09 18:43:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:43:05,748 INFO L225 Difference]: With dead ends: 399877 [2024-11-09 18:43:05,749 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 18:43:05,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:43:05,904 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 242 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:43:05,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 314 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:43:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 18:43:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 18:43:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:43:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 18:43:05,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 385 [2024-11-09 18:43:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:43:05,908 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 18:43:05,908 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) [2024-11-09 18:43:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 18:43:05,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 18:43:05,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 18:43:05,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 18:43:06,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:43:06,116 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:43:06,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.