./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/eca-rers2012/Problem13_label24.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 5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:13:30,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:13:30,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:13:30,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:13:30,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:13:30,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:13:30,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:13:30,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:13:30,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:13:30,315 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:13:30,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:13:30,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:13:30,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:13:30,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:13:30,319 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:13:30,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:13:30,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:13:30,320 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:13:30,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:13:30,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:13:30,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:13:30,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:13:30,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:13:30,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:13:30,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:13:30,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:13:30,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:13:30,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:13:30,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:13:30,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:13:30,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:13:30,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:13:30,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:13:30,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:13:30,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:13:30,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:13:30,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:13:30,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:13:30,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:13:30,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:13:30,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:13:30,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:13:30,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312 [2024-11-21 22:13:30,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:13:30,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:13:30,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:13:30,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:13:30,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:13:30,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2024-11-21 22:13:32,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:13:32,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:13:32,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2024-11-21 22:13:32,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5290dc4/62fcb05d5951482aa6ea5bd1ab949738/FLAG7c71d8eee [2024-11-21 22:13:32,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5290dc4/62fcb05d5951482aa6ea5bd1ab949738 [2024-11-21 22:13:32,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:13:32,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:13:32,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:13:32,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:13:32,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:13:32,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:32" (1/1) ... [2024-11-21 22:13:32,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3fa7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:32, skipping insertion in model container [2024-11-21 22:13:32,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:32" (1/1) ... [2024-11-21 22:13:32,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:13:33,065 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/Problem13_label24.c[4341,4354] [2024-11-21 22:13:33,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:13:33,995 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:13:34,017 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/Problem13_label24.c[4341,4354] [2024-11-21 22:13:34,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:13:34,568 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:13:34,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34 WrapperNode [2024-11-21 22:13:34,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:13:34,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:13:34,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:13:34,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:13:34,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:34,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,118 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-21 22:13:35,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:13:35,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:13:35,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:13:35,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:13:35,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,588 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]. [2024-11-21 22:13:35,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:35,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:36,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:36,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:13:36,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:13:36,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:13:36,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:13:36,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (1/1) ... [2024-11-21 22:13:36,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:13:36,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:13:36,113 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) [2024-11-21 22:13:36,116 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 [2024-11-21 22:13:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:13:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:13:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:13:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:13:36,238 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:13:36,240 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:13:42,050 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-21 22:13:42,050 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:13:42,099 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:13:42,100 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:13:42,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:42 BoogieIcfgContainer [2024-11-21 22:13:42,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:13:42,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:13:42,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:13:42,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:13:42,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:32" (1/3) ... [2024-11-21 22:13:42,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4242419b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:42, skipping insertion in model container [2024-11-21 22:13:42,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:34" (2/3) ... [2024-11-21 22:13:42,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4242419b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:42, skipping insertion in model container [2024-11-21 22:13:42,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:42" (3/3) ... [2024-11-21 22:13:42,111 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24.c [2024-11-21 22:13:42,127 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:13:42,127 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:13:42,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:13:42,233 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;@7c4d1433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:13:42,233 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:13:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:42,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 22:13:42,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:13:42,251 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] [2024-11-21 22:13:42,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:13:42,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:13:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -748286455, now seen corresponding path program 1 times [2024-11-21 22:13:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:13:42,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533759599] [2024-11-21 22:13:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:13:42,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:13:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:13:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:13:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:13:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533759599] [2024-11-21 22:13:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533759599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:13:42,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:13:42,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:13:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996158945] [2024-11-21 22:13:42,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:13:42,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:13:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:13:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:13:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:13:42,630 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:13:46,496 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2024-11-21 22:13:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:13:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-21 22:13:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:13:46,535 INFO L225 Difference]: With dead ends: 3082 [2024-11-21 22:13:46,535 INFO L226 Difference]: Without dead ends: 1899 [2024-11-21 22:13:46,544 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 [2024-11-21 22:13:46,547 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 1010 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:13:46,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-21 22:13:46,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-21 22:13:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2024-11-21 22:13:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2024-11-21 22:13:46,675 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 29 [2024-11-21 22:13:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:13:46,676 INFO L471 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2024-11-21 22:13:46,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2024-11-21 22:13:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-21 22:13:46,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:13:46,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:13:46,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:13:46,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:13:46,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:13:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash 741472386, now seen corresponding path program 1 times [2024-11-21 22:13:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:13:46,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431273109] [2024-11-21 22:13:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:13:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:13:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:13:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:13:46,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:13:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431273109] [2024-11-21 22:13:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431273109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:13:46,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:13:46,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:13:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469486682] [2024-11-21 22:13:46,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:13:46,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:13:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:13:46,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:13:46,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:13:46,967 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:13:50,682 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2024-11-21 22:13:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:13:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-11-21 22:13:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:13:50,697 INFO L225 Difference]: With dead ends: 5384 [2024-11-21 22:13:50,698 INFO L226 Difference]: Without dead ends: 3492 [2024-11-21 22:13:50,701 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 [2024-11-21 22:13:50,702 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:13:50,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-21 22:13:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2024-11-21 22:13:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2024-11-21 22:13:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2024-11-21 22:13:50,782 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 94 [2024-11-21 22:13:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:13:50,782 INFO L471 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2024-11-21 22:13:50,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2024-11-21 22:13:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-21 22:13:50,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:13:50,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:13:50,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:13:50,790 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:13:50,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:13:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1046705063, now seen corresponding path program 1 times [2024-11-21 22:13:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:13:50,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932041775] [2024-11-21 22:13:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:13:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:13:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:13:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:13:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:13:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932041775] [2024-11-21 22:13:50,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932041775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:13:50,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:13:50,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:13:50,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57716542] [2024-11-21 22:13:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:13:50,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:13:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:13:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:13:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:13:50,981 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:13:54,083 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2024-11-21 22:13:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:13:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-21 22:13:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:13:54,108 INFO L225 Difference]: With dead ends: 10169 [2024-11-21 22:13:54,109 INFO L226 Difference]: Without dead ends: 6680 [2024-11-21 22:13:54,116 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 [2024-11-21 22:13:54,118 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:13:54,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-21 22:13:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2024-11-21 22:13:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2024-11-21 22:13:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2024-11-21 22:13:54,231 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 96 [2024-11-21 22:13:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:13:54,232 INFO L471 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2024-11-21 22:13:54,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2024-11-21 22:13:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-21 22:13:54,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:13:54,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:13:54,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:13:54,235 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:13:54,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:13:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 248170165, now seen corresponding path program 1 times [2024-11-21 22:13:54,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:13:54,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264819798] [2024-11-21 22:13:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:13:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:13:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:13:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:13:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:13:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264819798] [2024-11-21 22:13:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264819798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:13:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:13:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:13:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868420988] [2024-11-21 22:13:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:13:54,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:13:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:13:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:13:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:13:54,695 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:13:57,159 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2024-11-21 22:13:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:13:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2024-11-21 22:13:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:13:57,182 INFO L225 Difference]: With dead ends: 14123 [2024-11-21 22:13:57,183 INFO L226 Difference]: Without dead ends: 7456 [2024-11-21 22:13:57,191 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 [2024-11-21 22:13:57,192 INFO L432 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:13:57,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-21 22:13:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2024-11-21 22:13:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2024-11-21 22:13:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2024-11-21 22:13:57,315 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 140 [2024-11-21 22:13:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:13:57,315 INFO L471 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2024-11-21 22:13:57,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:13:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2024-11-21 22:13:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-21 22:13:57,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:13:57,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:13:57,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:13:57,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:13:57,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:13:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1870627551, now seen corresponding path program 1 times [2024-11-21 22:13:57,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:13:57,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255137957] [2024-11-21 22:13:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:13:57,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:13:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:13:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-21 22:13:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:13:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255137957] [2024-11-21 22:13:57,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255137957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:13:57,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:13:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:13:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124728381] [2024-11-21 22:13:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:13:57,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:13:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:13:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:13:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:13:57,502 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:00,535 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2024-11-21 22:14:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-11-21 22:14:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:00,576 INFO L225 Difference]: With dead ends: 19656 [2024-11-21 22:14:00,577 INFO L226 Difference]: Without dead ends: 12989 [2024-11-21 22:14:00,586 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 [2024-11-21 22:14:00,588 INFO L432 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:00,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-21 22:14:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2024-11-21 22:14:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2024-11-21 22:14:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2024-11-21 22:14:00,783 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 154 [2024-11-21 22:14:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:00,783 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2024-11-21 22:14:00,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2024-11-21 22:14:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-21 22:14:00,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:00,788 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:14:00,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:14:00,788 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:00,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash -538681918, now seen corresponding path program 1 times [2024-11-21 22:14:00,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:00,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652493988] [2024-11-21 22:14:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-21 22:14:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652493988] [2024-11-21 22:14:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652493988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:14:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:14:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535258642] [2024-11-21 22:14:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:01,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:14:01,138 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:04,415 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2024-11-21 22:14:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 241 [2024-11-21 22:14:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:04,439 INFO L225 Difference]: With dead ends: 22792 [2024-11-21 22:14:04,440 INFO L226 Difference]: Without dead ends: 12980 [2024-11-21 22:14:04,451 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 [2024-11-21 22:14:04,453 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:04,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-21 22:14:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2024-11-21 22:14:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2024-11-21 22:14:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2024-11-21 22:14:04,625 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 241 [2024-11-21 22:14:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:04,626 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2024-11-21 22:14:04,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2024-11-21 22:14:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-21 22:14:04,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:04,632 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:14:04,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:14:04,632 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:04,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2012805208, now seen corresponding path program 1 times [2024-11-21 22:14:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111682560] [2024-11-21 22:14:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:14:04,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:04,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111682560] [2024-11-21 22:14:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111682560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:04,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:14:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:14:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137732566] [2024-11-21 22:14:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:04,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:04,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:14:04,800 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 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) [2024-11-21 22:14:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:08,416 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2024-11-21 22:14:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:08,416 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 [2024-11-21 22:14:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:08,453 INFO L225 Difference]: With dead ends: 36166 [2024-11-21 22:14:08,453 INFO L226 Difference]: Without dead ends: 23196 [2024-11-21 22:14:08,468 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 [2024-11-21 22:14:08,469 INFO L432 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:08,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-21 22:14:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2024-11-21 22:14:08,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2024-11-21 22:14:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2024-11-21 22:14:08,844 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 243 [2024-11-21 22:14:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:08,845 INFO L471 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2024-11-21 22:14:08,846 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) [2024-11-21 22:14:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2024-11-21 22:14:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-21 22:14:08,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:08,851 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:14:08,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:14:08,851 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:08,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash -4245416, now seen corresponding path program 1 times [2024-11-21 22:14:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:08,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483595627] [2024-11-21 22:14:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:08,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-21 22:14:09,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:09,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483595627] [2024-11-21 22:14:09,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483595627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:09,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:14:09,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:14:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580512683] [2024-11-21 22:14:09,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:09,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:09,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:09,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:09,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:14:09,046 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:12,323 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2024-11-21 22:14:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 265 [2024-11-21 22:14:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:12,377 INFO L225 Difference]: With dead ends: 55046 [2024-11-21 22:14:12,377 INFO L226 Difference]: Without dead ends: 33431 [2024-11-21 22:14:12,405 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 [2024-11-21 22:14:12,406 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 884 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:12,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 926 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-21 22:14:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2024-11-21 22:14:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2024-11-21 22:14:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.1762578905436047) internal successors, (38386), 32634 states have internal predecessors, (38386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38386 transitions. [2024-11-21 22:14:12,932 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38386 transitions. Word has length 265 [2024-11-21 22:14:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:12,933 INFO L471 AbstractCegarLoop]: Abstraction has 32635 states and 38386 transitions. [2024-11-21 22:14:12,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38386 transitions. [2024-11-21 22:14:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-21 22:14:12,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:12,937 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:14:12,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:14:12,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:12,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash -596585222, now seen corresponding path program 1 times [2024-11-21 22:14:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:12,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612620542] [2024-11-21 22:14:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 53 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:14:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612620542] [2024-11-21 22:14:14,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612620542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:14:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69177235] [2024-11-21 22:14:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:14,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:14:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:14:14,093 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) [2024-11-21 22:14:14,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:14:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:14,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:14:14,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:14:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-21 22:14:14,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:14:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69177235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:14,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:14:14,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-21 22:14:14,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938266510] [2024-11-21 22:14:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:14,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:14,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:14,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:14:14,453 INFO L87 Difference]: Start difference. First operand 32635 states and 38386 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:17,215 INFO L93 Difference]: Finished difference Result 64479 states and 75977 transitions. [2024-11-21 22:14:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:17,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 270 [2024-11-21 22:14:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:17,264 INFO L225 Difference]: With dead ends: 64479 [2024-11-21 22:14:17,265 INFO L226 Difference]: Without dead ends: 32633 [2024-11-21 22:14:17,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:14:17,297 INFO L432 NwaCegarLoop]: 1359 mSDtfsCounter, 1178 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:17,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1441 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-21 22:14:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32633 states. [2024-11-21 22:14:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32633 to 32632. [2024-11-21 22:14:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32632 states, 32631 states have (on average 1.1368330728448408) internal successors, (37096), 32631 states have internal predecessors, (37096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32632 states to 32632 states and 37096 transitions. [2024-11-21 22:14:17,637 INFO L78 Accepts]: Start accepts. Automaton has 32632 states and 37096 transitions. Word has length 270 [2024-11-21 22:14:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:17,638 INFO L471 AbstractCegarLoop]: Abstraction has 32632 states and 37096 transitions. [2024-11-21 22:14:17,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 32632 states and 37096 transitions. [2024-11-21 22:14:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-21 22:14:17,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:17,644 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:14:17,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:14:17,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:14:17,849 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:17,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1197651363, now seen corresponding path program 1 times [2024-11-21 22:14:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96948193] [2024-11-21 22:14:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-21 22:14:18,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96948193] [2024-11-21 22:14:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96948193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:18,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:14:18,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:14:18,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407432493] [2024-11-21 22:14:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:18,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:18,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:14:18,098 INFO L87 Difference]: Start difference. First operand 32632 states and 37096 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:21,501 INFO L93 Difference]: Finished difference Result 76288 states and 87829 transitions. [2024-11-21 22:14:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 320 [2024-11-21 22:14:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:21,545 INFO L225 Difference]: With dead ends: 76288 [2024-11-21 22:14:21,546 INFO L226 Difference]: Without dead ends: 44445 [2024-11-21 22:14:21,570 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 [2024-11-21 22:14:21,570 INFO L432 NwaCegarLoop]: 1802 mSDtfsCounter, 834 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:21,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1945 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-21 22:14:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44445 states. [2024-11-21 22:14:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44445 to 43654. [2024-11-21 22:14:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43654 states, 43653 states have (on average 1.1179300391725655) internal successors, (48801), 43653 states have internal predecessors, (48801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43654 states to 43654 states and 48801 transitions. [2024-11-21 22:14:21,972 INFO L78 Accepts]: Start accepts. Automaton has 43654 states and 48801 transitions. Word has length 320 [2024-11-21 22:14:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:21,973 INFO L471 AbstractCegarLoop]: Abstraction has 43654 states and 48801 transitions. [2024-11-21 22:14:21,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 43654 states and 48801 transitions. [2024-11-21 22:14:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-21 22:14:21,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:21,979 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:14:21,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:14:21,979 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:21,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1315903409, now seen corresponding path program 1 times [2024-11-21 22:14:21,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:21,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937489615] [2024-11-21 22:14:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 182 proven. 113 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-21 22:14:23,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937489615] [2024-11-21 22:14:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937489615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:14:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501454645] [2024-11-21 22:14:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:23,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:14:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:14:23,446 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) [2024-11-21 22:14:23,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:14:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:23,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:14:23,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:14:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-21 22:14:23,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:14:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501454645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:23,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:14:23,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-21 22:14:23,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494347743] [2024-11-21 22:14:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:23,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:23,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:14:23,700 INFO L87 Difference]: Start difference. First operand 43654 states and 48801 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:26,607 INFO L93 Difference]: Finished difference Result 86510 states and 96800 transitions. [2024-11-21 22:14:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 335 [2024-11-21 22:14:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:26,649 INFO L225 Difference]: With dead ends: 86510 [2024-11-21 22:14:26,650 INFO L226 Difference]: Without dead ends: 43645 [2024-11-21 22:14:26,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:14:26,675 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 1074 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:26,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 813 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-21 22:14:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2024-11-21 22:14:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2024-11-21 22:14:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086634740966478) internal successors, (47424), 43643 states have internal predecessors, (47424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47424 transitions. [2024-11-21 22:14:27,177 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47424 transitions. Word has length 335 [2024-11-21 22:14:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:27,177 INFO L471 AbstractCegarLoop]: Abstraction has 43644 states and 47424 transitions. [2024-11-21 22:14:27,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47424 transitions. [2024-11-21 22:14:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-21 22:14:27,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:27,183 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:14:27,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 22:14:27,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 22:14:27,384 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:27,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1592619154, now seen corresponding path program 1 times [2024-11-21 22:14:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449351752] [2024-11-21 22:14:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-21 22:14:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449351752] [2024-11-21 22:14:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449351752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:27,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:14:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:14:27,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954839282] [2024-11-21 22:14:27,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:27,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:14:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:14:27,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:14:27,640 INFO L87 Difference]: Start difference. First operand 43644 states and 47424 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:33,626 INFO L93 Difference]: Finished difference Result 150460 states and 163818 transitions. [2024-11-21 22:14:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:14:33,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 377 [2024-11-21 22:14:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:33,752 INFO L225 Difference]: With dead ends: 150460 [2024-11-21 22:14:33,752 INFO L226 Difference]: Without dead ends: 107605 [2024-11-21 22:14:33,788 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 [2024-11-21 22:14:33,789 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1713 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 1094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 7098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1094 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:33,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 755 Invalid, 7098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1094 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-21 22:14:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107605 states. [2024-11-21 22:14:35,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107605 to 104326. [2024-11-21 22:14:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794728013419603) internal successors, (112616), 104325 states have internal predecessors, (112616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112616 transitions. [2024-11-21 22:14:35,474 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112616 transitions. Word has length 377 [2024-11-21 22:14:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:35,479 INFO L471 AbstractCegarLoop]: Abstraction has 104326 states and 112616 transitions. [2024-11-21 22:14:35,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:35,479 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112616 transitions. [2024-11-21 22:14:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-21 22:14:35,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:35,488 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:14:35,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:14:35,489 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:35,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1410007016, now seen corresponding path program 1 times [2024-11-21 22:14:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996307528] [2024-11-21 22:14:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 354 proven. 110 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-21 22:14:36,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996307528] [2024-11-21 22:14:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996307528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:14:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372901261] [2024-11-21 22:14:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:36,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:14:36,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:14:36,606 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) [2024-11-21 22:14:36,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:14:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:36,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:14:36,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:14:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-11-21 22:14:36,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:14:36,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372901261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:36,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:14:36,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-21 22:14:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413679530] [2024-11-21 22:14:36,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:36,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:36,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:14:36,822 INFO L87 Difference]: Start difference. First operand 104326 states and 112616 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:40,020 INFO L93 Difference]: Finished difference Result 209441 states and 226030 transitions. [2024-11-21 22:14:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2024-11-21 22:14:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:14:40,150 INFO L225 Difference]: With dead ends: 209441 [2024-11-21 22:14:40,150 INFO L226 Difference]: Without dead ends: 105904 [2024-11-21 22:14:40,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:14:40,196 INFO L432 NwaCegarLoop]: 1386 mSDtfsCounter, 1010 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:14:40,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1472 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-21 22:14:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105904 states. [2024-11-21 22:14:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105904 to 104315. [2024-11-21 22:14:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104315 states, 104314 states have (on average 1.0673255747071342) internal successors, (111337), 104314 states have internal predecessors, (111337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104315 states to 104315 states and 111337 transitions. [2024-11-21 22:14:41,940 INFO L78 Accepts]: Start accepts. Automaton has 104315 states and 111337 transitions. Word has length 420 [2024-11-21 22:14:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:14:41,941 INFO L471 AbstractCegarLoop]: Abstraction has 104315 states and 111337 transitions. [2024-11-21 22:14:41,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 104315 states and 111337 transitions. [2024-11-21 22:14:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-21 22:14:41,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:14:41,950 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:14:41,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 22:14:42,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:14:42,151 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:14:42,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:14:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1183537067, now seen corresponding path program 1 times [2024-11-21 22:14:42,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:14:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407914224] [2024-11-21 22:14:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:14:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 387 proven. 113 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-21 22:14:43,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:14:43,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407914224] [2024-11-21 22:14:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407914224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:14:43,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841479108] [2024-11-21 22:14:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:14:43,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:14:43,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:14:43,492 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) [2024-11-21 22:14:43,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 22:14:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:14:43,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 22:14:43,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:14:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-21 22:14:43,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:14:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841479108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:14:43,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:14:43,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-21 22:14:43,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093387785] [2024-11-21 22:14:43,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:14:43,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:14:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:14:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:14:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:14:43,741 INFO L87 Difference]: Start difference. First operand 104315 states and 111337 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:14:47,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:14:47,218 INFO L93 Difference]: Finished difference Result 232249 states and 248873 transitions. [2024-11-21 22:14:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:14:47,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 438 [2024-11-21 22:14:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted.