./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label13.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 b7385fd88a67a4d51b868c33a4a2a17411348aca1f3bf817148857f9693eef2c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:11:28,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:11:28,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:11:28,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:11:28,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:11:28,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:11:28,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:11:28,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:11:28,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:11:28,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:11:28,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:11:28,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:11:28,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:11:28,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:11:28,731 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:11:28,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:11:28,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:11:28,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:11:28,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:11:28,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:11:28,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:11:28,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:11:28,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:11:28,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:11:28,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:11:28,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:11:28,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:11:28,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:11:28,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:11:28,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:11:28,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:11:28,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:11:28,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:11:28,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:11:28,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:11:28,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:11:28,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:11:28,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:11:28,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:11:28,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:11:28,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:11:28,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:11:28,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7385fd88a67a4d51b868c33a4a2a17411348aca1f3bf817148857f9693eef2c [2024-11-19 18:11:28,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:11:29,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:11:29,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:11:29,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:11:29,021 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:11:29,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label13.c [2024-11-19 18:11:30,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:11:30,937 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:11:30,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label13.c [2024-11-19 18:11:30,973 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c791e6ad4/8eb277ea2b454fdf9cf56d2c3c8b3d5d/FLAGed4407288 [2024-11-19 18:11:30,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c791e6ad4/8eb277ea2b454fdf9cf56d2c3c8b3d5d [2024-11-19 18:11:30,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:11:30,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:11:30,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:11:30,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:11:31,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:11:31,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:11:30" (1/1) ... [2024-11-19 18:11:31,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237afa37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:31, skipping insertion in model container [2024-11-19 18:11:31,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:11:30" (1/1) ... [2024-11-19 18:11:31,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:11:31,452 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_label13.c[8099,8112] [2024-11-19 18:11:32,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:11:32,329 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:11:32,359 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_label13.c[8099,8112] [2024-11-19 18:11:32,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:11:32,843 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:11:32,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32 WrapperNode [2024-11-19 18:11:32,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:11:32,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:11:32,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:11:32,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:11:32,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:32,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:33,472 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-19 18:11:33,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:11:33,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:11:33,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:11:33,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:11:33,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:33,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:33,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:33,826 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]. [2024-11-19 18:11:33,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:33,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:34,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:34,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:34,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:34,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:34,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:11:34,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:11:34,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:11:34,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:11:34,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (1/1) ... [2024-11-19 18:11:34,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:11:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:11:34,308 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) [2024-11-19 18:11:34,310 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 [2024-11-19 18:11:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:11:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:11:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:11:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:11:34,422 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:11:34,425 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:11:40,599 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-19 18:11:40,599 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:11:40,641 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:11:40,641 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:11:40,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:11:40 BoogieIcfgContainer [2024-11-19 18:11:40,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:11:40,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:11:40,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:11:40,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:11:40,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:11:30" (1/3) ... [2024-11-19 18:11:40,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21877c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:11:40, skipping insertion in model container [2024-11-19 18:11:40,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:11:32" (2/3) ... [2024-11-19 18:11:40,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21877c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:11:40, skipping insertion in model container [2024-11-19 18:11:40,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:11:40" (3/3) ... [2024-11-19 18:11:40,654 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2024-11-19 18:11:40,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:11:40,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:11:40,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:11:40,769 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;@176d6ef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:11:40,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:11:40,781 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) [2024-11-19 18:11:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 18:11:40,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:11:40,791 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:11:40,791 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:11:40,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:11:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2024-11-19 18:11:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:11:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354385621] [2024-11-19 18:11:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:11:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:11:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:11:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:11:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:11:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354385621] [2024-11-19 18:11:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354385621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:11:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:11:41,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:11:41,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155420008] [2024-11-19 18:11:41,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:11:41,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:11:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:11:41,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:11:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:11:41,414 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 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:11:47,769 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2024-11-19 18:11:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:11:47,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-19 18:11:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:11:47,800 INFO L225 Difference]: With dead ends: 3829 [2024-11-19 18:11:47,801 INFO L226 Difference]: Without dead ends: 2664 [2024-11-19 18:11:47,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:11:47,810 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 2679 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2679 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:11:47,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2679 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-19 18:11:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-19 18:11:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2024-11-19 18:11:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2024-11-19 18:11:47,950 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 57 [2024-11-19 18:11:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:11:47,951 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2024-11-19 18:11:47,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2024-11-19 18:11:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-19 18:11:47,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:11:47,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:11:47,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:11:47,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:11:47,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:11:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1953647055, now seen corresponding path program 1 times [2024-11-19 18:11:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:11:47,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560730272] [2024-11-19 18:11:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:11:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:11:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:11:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-19 18:11:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:11:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560730272] [2024-11-19 18:11:48,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560730272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:11:48,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:11:48,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:11:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522504692] [2024-11-19 18:11:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:11:48,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:11:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:11:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:11:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:11:48,406 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 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) [2024-11-19 18:11:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:11:51,824 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2024-11-19 18:11:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:11:51,825 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 182 [2024-11-19 18:11:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:11:51,841 INFO L225 Difference]: With dead ends: 6142 [2024-11-19 18:11:51,842 INFO L226 Difference]: Without dead ends: 4268 [2024-11-19 18:11:51,846 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 [2024-11-19 18:11:51,847 INFO L432 NwaCegarLoop]: 1039 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:11:51,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1188 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-19 18:11:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2024-11-19 18:11:51,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2024-11-19 18:11:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2024-11-19 18:11:51,920 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 182 [2024-11-19 18:11:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:11:51,923 INFO L471 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2024-11-19 18:11:51,923 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) [2024-11-19 18:11:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2024-11-19 18:11:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-19 18:11:51,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:11:51,929 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:11:51,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:11:51,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:11:51,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:11:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1535774173, now seen corresponding path program 1 times [2024-11-19 18:11:51,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:11:51,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687487545] [2024-11-19 18:11:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:11:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:11:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:11:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-19 18:11:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:11:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687487545] [2024-11-19 18:11:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687487545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:11:52,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:11:52,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:11:52,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231696833] [2024-11-19 18:11:52,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:11:52,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:11:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:11:52,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:11:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:11:52,212 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:11:55,496 INFO L93 Difference]: Finished difference Result 10897 states and 15274 transitions. [2024-11-19 18:11:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:11:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 224 [2024-11-19 18:11:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:11:55,523 INFO L225 Difference]: With dead ends: 10897 [2024-11-19 18:11:55,523 INFO L226 Difference]: Without dead ends: 7432 [2024-11-19 18:11:55,531 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 [2024-11-19 18:11:55,532 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:11:55,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 955 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-19 18:11:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2024-11-19 18:11:55,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7426. [2024-11-19 18:11:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2024-11-19 18:11:55,664 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 224 [2024-11-19 18:11:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:11:55,666 INFO L471 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2024-11-19 18:11:55,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2024-11-19 18:11:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-19 18:11:55,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:11:55,673 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:11:55,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:11:55,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:11:55,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:11:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -424268410, now seen corresponding path program 1 times [2024-11-19 18:11:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:11:55,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790002028] [2024-11-19 18:11:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:11:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:11:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:11:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 18:11:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:11:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790002028] [2024-11-19 18:11:56,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790002028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:11:56,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:11:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:11:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113913144] [2024-11-19 18:11:56,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:11:56,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:11:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:11:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:11:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:11:56,045 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:11:59,392 INFO L93 Difference]: Finished difference Result 19619 states and 25904 transitions. [2024-11-19 18:11:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:11:59,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 238 [2024-11-19 18:11:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:11:59,431 INFO L225 Difference]: With dead ends: 19619 [2024-11-19 18:11:59,432 INFO L226 Difference]: Without dead ends: 12982 [2024-11-19 18:11:59,445 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 [2024-11-19 18:11:59,446 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:11:59,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 637 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-19 18:11:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-11-19 18:11:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12975. [2024-11-19 18:11:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2719284723292739) internal successors, (16502), 12974 states have internal predecessors, (16502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16502 transitions. [2024-11-19 18:11:59,661 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16502 transitions. Word has length 238 [2024-11-19 18:11:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:11:59,662 INFO L471 AbstractCegarLoop]: Abstraction has 12975 states and 16502 transitions. [2024-11-19 18:11:59,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:11:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16502 transitions. [2024-11-19 18:11:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-19 18:11:59,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:11:59,666 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:11:59,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:11:59,666 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:11:59,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:11:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1333823715, now seen corresponding path program 1 times [2024-11-19 18:11:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:11:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042317302] [2024-11-19 18:11:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:11:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:11:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:11:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-19 18:11:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:11:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042317302] [2024-11-19 18:11:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042317302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:11:59,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:11:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:11:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110761939] [2024-11-19 18:11:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:11:59,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:11:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:11:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:11:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:11:59,935 INFO L87 Difference]: Start difference. First operand 12975 states and 16502 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:02,896 INFO L93 Difference]: Finished difference Result 36180 states and 46592 transitions. [2024-11-19 18:12:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:02,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 254 [2024-11-19 18:12:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:02,939 INFO L225 Difference]: With dead ends: 36180 [2024-11-19 18:12:02,940 INFO L226 Difference]: Without dead ends: 23994 [2024-11-19 18:12:02,952 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 [2024-11-19 18:12:02,953 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:02,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-19 18:12:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2024-11-19 18:12:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 22416. [2024-11-19 18:12:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22416 states, 22415 states have (on average 1.211153245594468) internal successors, (27148), 22415 states have internal predecessors, (27148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 27148 transitions. [2024-11-19 18:12:03,264 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 27148 transitions. Word has length 254 [2024-11-19 18:12:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:03,265 INFO L471 AbstractCegarLoop]: Abstraction has 22416 states and 27148 transitions. [2024-11-19 18:12:03,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 27148 transitions. [2024-11-19 18:12:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-19 18:12:03,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:03,272 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:03,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:12:03,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:03,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash 678495218, now seen corresponding path program 1 times [2024-11-19 18:12:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993904248] [2024-11-19 18:12:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 18:12:03,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993904248] [2024-11-19 18:12:03,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993904248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:03,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:03,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877635435] [2024-11-19 18:12:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:03,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:03,483 INFO L87 Difference]: Start difference. First operand 22416 states and 27148 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) [2024-11-19 18:12:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:06,930 INFO L93 Difference]: Finished difference Result 55858 states and 69068 transitions. [2024-11-19 18:12:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:06,931 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 297 [2024-11-19 18:12:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:06,995 INFO L225 Difference]: With dead ends: 55858 [2024-11-19 18:12:06,995 INFO L226 Difference]: Without dead ends: 34231 [2024-11-19 18:12:07,020 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 [2024-11-19 18:12:07,021 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 888 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:07,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-19 18:12:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2024-11-19 18:12:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 33434. [2024-11-19 18:12:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1906200460622738) internal successors, (39806), 33433 states have internal predecessors, (39806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39806 transitions. [2024-11-19 18:12:07,667 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39806 transitions. Word has length 297 [2024-11-19 18:12:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:07,668 INFO L471 AbstractCegarLoop]: Abstraction has 33434 states and 39806 transitions. [2024-11-19 18:12:07,669 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) [2024-11-19 18:12:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39806 transitions. [2024-11-19 18:12:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-19 18:12:07,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:07,679 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:07,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:12:07,679 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:07,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1737785822, now seen corresponding path program 1 times [2024-11-19 18:12:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:07,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486413453] [2024-11-19 18:12:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 18:12:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486413453] [2024-11-19 18:12:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486413453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105391353] [2024-11-19 18:12:08,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:08,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:12:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:08,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:12:08,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:12:08,201 INFO L87 Difference]: Start difference. First operand 33434 states and 39806 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:14,522 INFO L93 Difference]: Finished difference Result 117460 states and 141039 transitions. [2024-11-19 18:12:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:12:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 345 [2024-11-19 18:12:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:14,625 INFO L225 Difference]: With dead ends: 117460 [2024-11-19 18:12:14,625 INFO L226 Difference]: Without dead ends: 84815 [2024-11-19 18:12:14,653 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 [2024-11-19 18:12:14,655 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 1727 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6675 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 7793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:14,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 732 Invalid, 7793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6675 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-19 18:12:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84815 states. [2024-11-19 18:12:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84815 to 83900. [2024-11-19 18:12:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.1735539160180692) internal successors, (98460), 83899 states have internal predecessors, (98460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98460 transitions. [2024-11-19 18:12:16,088 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98460 transitions. Word has length 345 [2024-11-19 18:12:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:16,093 INFO L471 AbstractCegarLoop]: Abstraction has 83900 states and 98460 transitions. [2024-11-19 18:12:16,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98460 transitions. [2024-11-19 18:12:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-19 18:12:16,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:16,115 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:16,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:12:16,116 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:16,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash -127471989, now seen corresponding path program 1 times [2024-11-19 18:12:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:16,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846986582] [2024-11-19 18:12:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-19 18:12:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846986582] [2024-11-19 18:12:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846986582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:16,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:16,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:12:16,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125436229] [2024-11-19 18:12:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:16,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:16,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:16,571 INFO L87 Difference]: Start difference. First operand 83900 states and 98460 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:19,538 INFO L93 Difference]: Finished difference Result 156777 states and 185083 transitions. [2024-11-19 18:12:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:19,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 354 [2024-11-19 18:12:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:19,816 INFO L225 Difference]: With dead ends: 156777 [2024-11-19 18:12:19,817 INFO L226 Difference]: Without dead ends: 83909 [2024-11-19 18:12:19,876 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 [2024-11-19 18:12:19,879 INFO L432 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:19,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 18:12:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83909 states. [2024-11-19 18:12:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83909 to 83900. [2024-11-19 18:12:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.172779174960369) internal successors, (98395), 83899 states have internal predecessors, (98395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98395 transitions. [2024-11-19 18:12:21,014 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98395 transitions. Word has length 354 [2024-11-19 18:12:21,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:21,018 INFO L471 AbstractCegarLoop]: Abstraction has 83900 states and 98395 transitions. [2024-11-19 18:12:21,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98395 transitions. [2024-11-19 18:12:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-19 18:12:21,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:21,033 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:21,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:12:21,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:21,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1869300435, now seen corresponding path program 1 times [2024-11-19 18:12:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:21,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268624863] [2024-11-19 18:12:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:21,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 278 proven. 113 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 18:12:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268624863] [2024-11-19 18:12:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268624863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:12:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776816603] [2024-11-19 18:12:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:22,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:12:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:12:22,837 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) [2024-11-19 18:12:22,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:12:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:22,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:12:23,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:12:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-19 18:12:23,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:12:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776816603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:23,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:12:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-19 18:12:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772867190] [2024-11-19 18:12:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:23,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:23,211 INFO L87 Difference]: Start difference. First operand 83900 states and 98395 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:26,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:26,171 INFO L93 Difference]: Finished difference Result 167009 states and 195995 transitions. [2024-11-19 18:12:26,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:26,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 383 [2024-11-19 18:12:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:26,286 INFO L225 Difference]: With dead ends: 167009 [2024-11-19 18:12:26,287 INFO L226 Difference]: Without dead ends: 83898 [2024-11-19 18:12:26,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:26,307 INFO L432 NwaCegarLoop]: 1365 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:26,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1447 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 18:12:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83898 states. [2024-11-19 18:12:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83898 to 83110. [2024-11-19 18:12:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83110 states, 83109 states have (on average 1.1286142295058297) internal successors, (93798), 83109 states have internal predecessors, (93798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83110 states to 83110 states and 93798 transitions. [2024-11-19 18:12:27,329 INFO L78 Accepts]: Start accepts. Automaton has 83110 states and 93798 transitions. Word has length 383 [2024-11-19 18:12:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:27,329 INFO L471 AbstractCegarLoop]: Abstraction has 83110 states and 93798 transitions. [2024-11-19 18:12:27,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 83110 states and 93798 transitions. [2024-11-19 18:12:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-19 18:12:27,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:27,341 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:27,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:12:27,544 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 [2024-11-19 18:12:27,545 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:27,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash -289451502, now seen corresponding path program 1 times [2024-11-19 18:12:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:27,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960221887] [2024-11-19 18:12:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:27,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-19 18:12:27,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:27,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960221887] [2024-11-19 18:12:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960221887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:27,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:27,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252370926] [2024-11-19 18:12:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:27,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:27,814 INFO L87 Difference]: Start difference. First operand 83110 states and 93798 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:31,626 INFO L93 Difference]: Finished difference Result 191411 states and 218503 transitions. [2024-11-19 18:12:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:31,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2024-11-19 18:12:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:31,748 INFO L225 Difference]: With dead ends: 191411 [2024-11-19 18:12:31,748 INFO L226 Difference]: Without dead ends: 109090 [2024-11-19 18:12:31,775 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 [2024-11-19 18:12:31,776 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 892 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:31,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 944 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-19 18:12:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109090 states. [2024-11-19 18:12:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109090 to 107496. [2024-11-19 18:12:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107496 states, 107495 states have (on average 1.13280617703149) internal successors, (121771), 107495 states have internal predecessors, (121771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107496 states to 107496 states and 121771 transitions. [2024-11-19 18:12:33,258 INFO L78 Accepts]: Start accepts. Automaton has 107496 states and 121771 transitions. Word has length 413 [2024-11-19 18:12:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:33,259 INFO L471 AbstractCegarLoop]: Abstraction has 107496 states and 121771 transitions. [2024-11-19 18:12:33,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 107496 states and 121771 transitions. [2024-11-19 18:12:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-19 18:12:33,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:33,268 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:12:33,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:12:33,269 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:33,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1031117907, now seen corresponding path program 1 times [2024-11-19 18:12:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151578917] [2024-11-19 18:12:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-19 18:12:33,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:33,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151578917] [2024-11-19 18:12:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151578917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:33,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:12:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:12:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877029193] [2024-11-19 18:12:33,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:33,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:12:33,571 INFO L87 Difference]: Start difference. First operand 107496 states and 121771 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:12:37,582 INFO L93 Difference]: Finished difference Result 239402 states and 273697 transitions. [2024-11-19 18:12:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:12:37,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 451 [2024-11-19 18:12:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:12:37,727 INFO L225 Difference]: With dead ends: 239402 [2024-11-19 18:12:37,727 INFO L226 Difference]: Without dead ends: 132695 [2024-11-19 18:12:37,753 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 [2024-11-19 18:12:37,754 INFO L432 NwaCegarLoop]: 1787 mSDtfsCounter, 781 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:12:37,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-19 18:12:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132695 states. [2024-11-19 18:12:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132695 to 132678. [2024-11-19 18:12:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132678 states, 132677 states have (on average 1.1164859018518658) internal successors, (148132), 132677 states have internal predecessors, (148132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132678 states to 132678 states and 148132 transitions. [2024-11-19 18:12:39,495 INFO L78 Accepts]: Start accepts. Automaton has 132678 states and 148132 transitions. Word has length 451 [2024-11-19 18:12:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:12:39,499 INFO L471 AbstractCegarLoop]: Abstraction has 132678 states and 148132 transitions. [2024-11-19 18:12:39,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:12:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 132678 states and 148132 transitions. [2024-11-19 18:12:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-19 18:12:39,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:12:39,547 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:12:39,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:12:39,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:12:39,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:12:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash 581013402, now seen corresponding path program 1 times [2024-11-19 18:12:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:12:39,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580793991] [2024-11-19 18:12:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:39,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:12:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 347 proven. 113 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 18:12:41,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:12:41,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580793991] [2024-11-19 18:12:41,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580793991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:12:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049204202] [2024-11-19 18:12:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:12:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:12:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:12:41,601 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) [2024-11-19 18:12:41,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:12:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:12:41,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:12:41,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:12:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-19 18:12:42,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:12:42,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049204202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:12:42,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:12:42,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-19 18:12:42,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083440735] [2024-11-19 18:12:42,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:12:42,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:12:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:12:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:12:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:12:42,075 INFO L87 Difference]: Start difference. First operand 132678 states and 148132 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)