./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.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 306d76de7aaacb5c78b0c01822f757a2e7207e6c0d97a8439c3c177a2e4c44f4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:44:36,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:44:36,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:44:36,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:44:36,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:44:36,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:44:36,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:44:36,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:44:36,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:44:36,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:44:36,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:44:36,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:44:36,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:44:36,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:44:36,612 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:44:36,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:44:36,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:44:36,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:44:36,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:44:36,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:44:36,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:44:36,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:44:36,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:44:36,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:44:36,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:44:36,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:44:36,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:44:36,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:44:36,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:44:36,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:44:36,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:44:36,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:44:36,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:44:36,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:44:36,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:44:36,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:44:36,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:44:36,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:44:36,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:44:36,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:44:36,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:44:36,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:44:36,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d76de7aaacb5c78b0c01822f757a2e7207e6c0d97a8439c3c177a2e4c44f4 [2024-10-23 21:44:36,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:44:36,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:44:36,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:44:36,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:44:36,910 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:44:36,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c [2024-10-23 21:44:38,407 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:44:38,946 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:44:38,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c [2024-10-23 21:44:39,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7331f34/9e8cbd065ed1445caa8f045d21f2d988/FLAG5a17ecee6 [2024-10-23 21:44:39,017 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7331f34/9e8cbd065ed1445caa8f045d21f2d988 [2024-10-23 21:44:39,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:44:39,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:44:39,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:44:39,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:44:39,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:44:39,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:39" (1/1) ... [2024-10-23 21:44:39,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26186f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:39, skipping insertion in model container [2024-10-23 21:44:39,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:39" (1/1) ... [2024-10-23 21:44:39,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:44:39,554 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c[8401,8414] [2024-10-23 21:44:40,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:44:40,667 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:44:40,689 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label48.c[8401,8414] [2024-10-23 21:44:41,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:44:41,400 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:44:41,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41 WrapperNode [2024-10-23 21:44:41,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:44:41,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:44:41,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:44:41,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:44:41,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:41,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:42,388 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2024-10-23 21:44:42,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:44:42,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:44:42,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:44:42,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:44:42,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:42,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:42,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,116 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:44:43,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:44:43,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:44:43,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:44:43,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:44:43,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (1/1) ... [2024-10-23 21:44:43,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:44:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:44:43,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:44:43,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:44:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:44:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:44:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:44:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:44:43,951 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:44:43,953 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:44:51,613 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-10-23 21:44:51,614 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:44:51,685 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:44:51,685 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:44:51,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:51 BoogieIcfgContainer [2024-10-23 21:44:51,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:44:51,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:44:51,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:44:51,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:44:51,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:44:39" (1/3) ... [2024-10-23 21:44:51,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf01b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:51, skipping insertion in model container [2024-10-23 21:44:51,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:41" (2/3) ... [2024-10-23 21:44:51,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf01b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:51, skipping insertion in model container [2024-10-23 21:44:51,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:51" (3/3) ... [2024-10-23 21:44:51,694 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48.c [2024-10-23 21:44:51,710 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:44:51,710 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:44:51,817 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:44:51,823 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;@2fbe3041, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:44:51,823 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:44:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-23 21:44:51,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:44:51,842 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] [2024-10-23 21:44:51,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:44:51,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:44:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1802008972, now seen corresponding path program 1 times [2024-10-23 21:44:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:44:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142006871] [2024-10-23 21:44:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:44:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:44:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:44:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:44:52,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:44:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142006871] [2024-10-23 21:44:52,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142006871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:44:52,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:44:52,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:44:52,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114351080] [2024-10-23 21:44:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:44:52,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:44:52,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:44:52,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:44:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:44:52,110 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:44:52,227 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2024-10-23 21:44:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:44:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-10-23 21:44:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:44:52,258 INFO L225 Difference]: With dead ends: 3371 [2024-10-23 21:44:52,258 INFO L226 Difference]: Without dead ends: 1684 [2024-10-23 21:44:52,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:44:52,274 INFO L432 NwaCegarLoop]: 3138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:44:52,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:44:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2024-10-23 21:44:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2024-10-23 21:44:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2024-10-23 21:44:52,388 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 64 [2024-10-23 21:44:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:44:52,389 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2024-10-23 21:44:52,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2024-10-23 21:44:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-23 21:44:52,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:44:52,392 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] [2024-10-23 21:44:52,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:44:52,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:44:52,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:44:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1194989488, now seen corresponding path program 1 times [2024-10-23 21:44:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:44:52,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188831073] [2024-10-23 21:44:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:44:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:44:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:44:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:44:52,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:44:52,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188831073] [2024-10-23 21:44:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188831073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:44:52,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:44:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:44:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943510745] [2024-10-23 21:44:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:44:52,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:44:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:44:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:44:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:44:52,629 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:58,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:44:58,885 INFO L93 Difference]: Finished difference Result 4862 states and 9131 transitions. [2024-10-23 21:44:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:44:58,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-10-23 21:44:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:44:58,897 INFO L225 Difference]: With dead ends: 4862 [2024-10-23 21:44:58,897 INFO L226 Difference]: Without dead ends: 3179 [2024-10-23 21:44:58,899 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 [2024-10-23 21:44:58,900 INFO L432 NwaCegarLoop]: 975 mSDtfsCounter, 1583 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 2020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2020 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:44:58,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 1110 Invalid, 6161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2020 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-10-23 21:44:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2024-10-23 21:44:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3121. [2024-10-23 21:44:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3120 states have (on average 1.728525641025641) internal successors, (5393), 3120 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5393 transitions. [2024-10-23 21:44:58,962 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5393 transitions. Word has length 64 [2024-10-23 21:44:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:44:58,963 INFO L471 AbstractCegarLoop]: Abstraction has 3121 states and 5393 transitions. [2024-10-23 21:44:58,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:44:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5393 transitions. [2024-10-23 21:44:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-23 21:44:58,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:44:58,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:44:58,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:44:58,972 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:44:58,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:44:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1665760269, now seen corresponding path program 1 times [2024-10-23 21:44:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:44:58,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778420657] [2024-10-23 21:44:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:44:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:44:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:44:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:44:59,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:44:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778420657] [2024-10-23 21:44:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778420657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:44:59,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:44:59,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:44:59,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878980962] [2024-10-23 21:44:59,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:44:59,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:44:59,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:44:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:44:59,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:44:59,197 INFO L87 Difference]: Start difference. First operand 3121 states and 5393 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:04,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:04,764 INFO L93 Difference]: Finished difference Result 9134 states and 15859 transitions. [2024-10-23 21:45:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:45:04,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-10-23 21:45:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:04,789 INFO L225 Difference]: With dead ends: 9134 [2024-10-23 21:45:04,790 INFO L226 Difference]: Without dead ends: 6014 [2024-10-23 21:45:04,797 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 [2024-10-23 21:45:04,798 INFO L432 NwaCegarLoop]: 719 mSDtfsCounter, 2533 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5119 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:04,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 990 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5119 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-23 21:45:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2024-10-23 21:45:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 6012. [2024-10-23 21:45:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.6709366162036268) internal successors, (10044), 6011 states have internal predecessors, (10044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 10044 transitions. [2024-10-23 21:45:04,910 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 10044 transitions. Word has length 132 [2024-10-23 21:45:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:45:04,911 INFO L471 AbstractCegarLoop]: Abstraction has 6012 states and 10044 transitions. [2024-10-23 21:45:04,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 10044 transitions. [2024-10-23 21:45:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-23 21:45:04,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:45:04,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:45:04,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:45:04,916 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:45:04,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:45:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1899140024, now seen corresponding path program 1 times [2024-10-23 21:45:04,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:45:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224234762] [2024-10-23 21:45:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:45:04,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:45:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:45:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:45:05,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:45:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224234762] [2024-10-23 21:45:05,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224234762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:45:05,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:45:05,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:45:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644523555] [2024-10-23 21:45:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:45:05,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:45:05,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:45:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:45:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:45:05,311 INFO L87 Difference]: Start difference. First operand 6012 states and 10044 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:11,206 INFO L93 Difference]: Finished difference Result 17597 states and 29554 transitions. [2024-10-23 21:45:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:45:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-10-23 21:45:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:11,254 INFO L225 Difference]: With dead ends: 17597 [2024-10-23 21:45:11,255 INFO L226 Difference]: Without dead ends: 11586 [2024-10-23 21:45:11,266 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 [2024-10-23 21:45:11,268 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4336 mSolverCounterSat, 1470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 4336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:11,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1716 Invalid, 5806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1470 Valid, 4336 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-23 21:45:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2024-10-23 21:45:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11551. [2024-10-23 21:45:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11550 states have (on average 1.4577489177489178) internal successors, (16837), 11550 states have internal predecessors, (16837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 16837 transitions. [2024-10-23 21:45:11,531 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 16837 transitions. Word has length 135 [2024-10-23 21:45:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:45:11,532 INFO L471 AbstractCegarLoop]: Abstraction has 11551 states and 16837 transitions. [2024-10-23 21:45:11,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 16837 transitions. [2024-10-23 21:45:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-23 21:45:11,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:45:11,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:45:11,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:45:11,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:45:11,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:45:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1983555769, now seen corresponding path program 1 times [2024-10-23 21:45:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:45:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895230777] [2024-10-23 21:45:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:45:11,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:45:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:45:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:45:11,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:45:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895230777] [2024-10-23 21:45:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895230777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:45:11,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:45:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:45:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839387301] [2024-10-23 21:45:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:45:11,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:45:11,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:45:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:45:11,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:45:11,773 INFO L87 Difference]: Start difference. First operand 11551 states and 16837 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:17,416 INFO L93 Difference]: Finished difference Result 34261 states and 50006 transitions. [2024-10-23 21:45:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:45:17,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-10-23 21:45:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:17,469 INFO L225 Difference]: With dead ends: 34261 [2024-10-23 21:45:17,470 INFO L226 Difference]: Without dead ends: 22711 [2024-10-23 21:45:17,490 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 [2024-10-23 21:45:17,493 INFO L432 NwaCegarLoop]: 1848 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:17,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 2121 Invalid, 5746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4316 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-23 21:45:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2024-10-23 21:45:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 22686. [2024-10-23 21:45:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22686 states, 22685 states have (on average 1.281948424068768) internal successors, (29081), 22685 states have internal predecessors, (29081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22686 states to 22686 states and 29081 transitions. [2024-10-23 21:45:17,837 INFO L78 Accepts]: Start accepts. Automaton has 22686 states and 29081 transitions. Word has length 161 [2024-10-23 21:45:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:45:17,838 INFO L471 AbstractCegarLoop]: Abstraction has 22686 states and 29081 transitions. [2024-10-23 21:45:17,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22686 states and 29081 transitions. [2024-10-23 21:45:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-10-23 21:45:17,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:45:17,846 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:45:17,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:45:17,847 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:45:17,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:45:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash -806539122, now seen corresponding path program 1 times [2024-10-23 21:45:17,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:45:17,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487034789] [2024-10-23 21:45:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:45:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:45:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:45:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-23 21:45:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:45:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487034789] [2024-10-23 21:45:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487034789] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:45:19,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:45:19,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:45:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667993267] [2024-10-23 21:45:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:45:19,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:45:19,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:45:19,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:45:19,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:45:19,104 INFO L87 Difference]: Start difference. First operand 22686 states and 29081 transitions. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:26,902 INFO L93 Difference]: Finished difference Result 57743 states and 72060 transitions. [2024-10-23 21:45:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:45:26,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 443 [2024-10-23 21:45:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:26,955 INFO L225 Difference]: With dead ends: 57743 [2024-10-23 21:45:26,955 INFO L226 Difference]: Without dead ends: 35058 [2024-10-23 21:45:26,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:45:26,978 INFO L432 NwaCegarLoop]: 1789 mSDtfsCounter, 3752 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 9617 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 9789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 9617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:26,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 2146 Invalid, 9789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 9617 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-10-23 21:45:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35058 states. [2024-10-23 21:45:27,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35058 to 33648. [2024-10-23 21:45:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33648 states, 33647 states have (on average 1.2262608850714773) internal successors, (41260), 33647 states have internal predecessors, (41260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33648 states to 33648 states and 41260 transitions. [2024-10-23 21:45:27,390 INFO L78 Accepts]: Start accepts. Automaton has 33648 states and 41260 transitions. Word has length 443 [2024-10-23 21:45:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:45:27,391 INFO L471 AbstractCegarLoop]: Abstraction has 33648 states and 41260 transitions. [2024-10-23 21:45:27,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 33648 states and 41260 transitions. [2024-10-23 21:45:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-10-23 21:45:27,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:45:27,405 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:45:27,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:45:27,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:45:27,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:45:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash -272472710, now seen corresponding path program 1 times [2024-10-23 21:45:27,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:45:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595040034] [2024-10-23 21:45:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:45:27,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:45:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:45:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-10-23 21:45:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:45:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595040034] [2024-10-23 21:45:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595040034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:45:29,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:45:29,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:45:29,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117632503] [2024-10-23 21:45:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:45:29,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:45:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:45:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:45:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:45:29,345 INFO L87 Difference]: Start difference. First operand 33648 states and 41260 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:37,146 INFO L93 Difference]: Finished difference Result 90599 states and 108577 transitions. [2024-10-23 21:45:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:45:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 650 [2024-10-23 21:45:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:37,224 INFO L225 Difference]: With dead ends: 90599 [2024-10-23 21:45:37,224 INFO L226 Difference]: Without dead ends: 56952 [2024-10-23 21:45:37,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:45:37,256 INFO L432 NwaCegarLoop]: 1747 mSDtfsCounter, 3757 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 9615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 9353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:37,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2099 Invalid, 9615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-10-23 21:45:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56952 states. [2024-10-23 21:45:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56952 to 52813. [2024-10-23 21:45:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52813 states, 52812 states have (on average 1.1742028326895402) internal successors, (62012), 52812 states have internal predecessors, (62012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52813 states to 52813 states and 62012 transitions. [2024-10-23 21:45:37,824 INFO L78 Accepts]: Start accepts. Automaton has 52813 states and 62012 transitions. Word has length 650 [2024-10-23 21:45:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:45:37,825 INFO L471 AbstractCegarLoop]: Abstraction has 52813 states and 62012 transitions. [2024-10-23 21:45:37,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 52813 states and 62012 transitions. [2024-10-23 21:45:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-10-23 21:45:37,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:45:37,839 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:45:37,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:45:37,840 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:45:37,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:45:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -917013932, now seen corresponding path program 1 times [2024-10-23 21:45:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:45:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395129383] [2024-10-23 21:45:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:45:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:45:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:45:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-10-23 21:45:38,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:45:38,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395129383] [2024-10-23 21:45:38,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395129383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:45:38,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:45:38,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:45:38,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453535978] [2024-10-23 21:45:38,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:45:38,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:45:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:45:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:45:38,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:45:38,786 INFO L87 Difference]: Start difference. First operand 52813 states and 62012 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:43,927 INFO L93 Difference]: Finished difference Result 108386 states and 126802 transitions. [2024-10-23 21:45:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:45:43,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 678 [2024-10-23 21:45:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:43,991 INFO L225 Difference]: With dead ends: 108386 [2024-10-23 21:45:43,991 INFO L226 Difference]: Without dead ends: 55543 [2024-10-23 21:45:44,032 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 [2024-10-23 21:45:44,033 INFO L432 NwaCegarLoop]: 1766 mSDtfsCounter, 1151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5714 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 5722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:44,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1944 Invalid, 5722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5714 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-10-23 21:45:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55543 states. [2024-10-23 21:45:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55543 to 55543. [2024-10-23 21:45:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55543 states, 55542 states have (on average 1.1657304382269273) internal successors, (64747), 55542 states have internal predecessors, (64747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 64747 transitions. [2024-10-23 21:45:44,837 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 64747 transitions. Word has length 678 [2024-10-23 21:45:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:45:44,838 INFO L471 AbstractCegarLoop]: Abstraction has 55543 states and 64747 transitions. [2024-10-23 21:45:44,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 64747 transitions. [2024-10-23 21:45:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2024-10-23 21:45:44,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:45:44,862 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:45:44,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:45:44,862 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:45:44,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:45:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash -747203656, now seen corresponding path program 1 times [2024-10-23 21:45:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:45:44,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059954180] [2024-10-23 21:45:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:45:44,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:45:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:45:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-10-23 21:45:46,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:45:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059954180] [2024-10-23 21:45:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059954180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:45:46,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:45:46,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:45:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458536049] [2024-10-23 21:45:46,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:45:46,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:45:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:45:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:45:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:45:46,498 INFO L87 Difference]: Start difference. First operand 55543 states and 64747 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:45:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:45:52,359 INFO L93 Difference]: Finished difference Result 133113 states and 156924 transitions. [2024-10-23 21:45:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:45:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 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 763 [2024-10-23 21:45:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:45:52,447 INFO L225 Difference]: With dead ends: 133113 [2024-10-23 21:45:52,448 INFO L226 Difference]: Without dead ends: 80301 [2024-10-23 21:45:52,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:45:52,487 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 1666 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 2245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2245 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:45:52,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 811 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2245 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-10-23 21:45:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80301 states. [2024-10-23 21:45:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80301 to 77412.