./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/Problem12_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/Problem12_label20.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 702e32bde69e0b1ece4e7732f8bcc90ed2c9bf4432a02312b63f0298ad23fbb9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:03:33,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:03:33,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:03:33,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:03:33,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:03:33,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:03:33,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:03:33,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:03:33,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:03:33,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:03:33,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:03:33,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:03:33,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:03:33,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:03:33,589 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:03:33,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:03:33,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:03:33,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:03:33,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:03:33,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:03:33,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:03:33,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:03:33,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:03:33,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:03:33,593 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:03:33,593 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:03:33,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:03:33,593 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:03:33,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:03:33,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:03:33,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:03:33,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:03:33,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:03:33,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:03:33,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:03:33,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:03:33,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:03:33,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:03:33,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:03:33,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:03:33,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:03:33,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:03:33,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702e32bde69e0b1ece4e7732f8bcc90ed2c9bf4432a02312b63f0298ad23fbb9 [2024-10-12 16:03:33,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:03:33,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:03:33,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:03:33,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:03:33,794 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:03:33,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2024-10-12 16:03:35,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:03:35,541 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:03:35,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2024-10-12 16:03:35,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2cefe8c/a50419d2749c4636a51a3fd6cc9e2039/FLAG4ce5edba4 [2024-10-12 16:03:35,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2cefe8c/a50419d2749c4636a51a3fd6cc9e2039 [2024-10-12 16:03:35,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:03:35,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:03:35,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:03:35,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:03:35,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:03:35,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:03:35" (1/1) ... [2024-10-12 16:03:35,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1356ca93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:35, skipping insertion in model container [2024-10-12 16:03:35,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:03:35" (1/1) ... [2024-10-12 16:03:35,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:03:35,853 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label20.c[1898,1911] [2024-10-12 16:03:36,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:03:36,355 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:03:36,371 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label20.c[1898,1911] [2024-10-12 16:03:36,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:03:36,750 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:03:36,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36 WrapperNode [2024-10-12 16:03:36,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:03:36,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:03:36,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:03:36,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:03:36,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:36,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:36,995 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-12 16:03:36,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:03:36,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:03:36,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:03:36,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:03:37,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,251 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:03:37,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:03:37,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:03:37,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:03:37,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:03:37,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (1/1) ... [2024-10-12 16:03:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:03:37,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:03:37,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:03:37,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:03:37,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:03:37,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:03:37,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:03:37,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:03:37,749 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:03:37,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:03:40,991 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-12 16:03:40,992 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:03:41,047 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:03:41,050 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:03:41,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:03:41 BoogieIcfgContainer [2024-10-12 16:03:41,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:03:41,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:03:41,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:03:41,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:03:41,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:03:35" (1/3) ... [2024-10-12 16:03:41,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bef6647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:03:41, skipping insertion in model container [2024-10-12 16:03:41,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:03:36" (2/3) ... [2024-10-12 16:03:41,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bef6647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:03:41, skipping insertion in model container [2024-10-12 16:03:41,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:03:41" (3/3) ... [2024-10-12 16:03:41,057 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2024-10-12 16:03:41,070 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:03:41,070 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:03:41,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:03:41,137 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;@2fde3db5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:03:41,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:03:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-12 16:03:41,147 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:41,148 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:41,148 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:41,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash 135147357, now seen corresponding path program 1 times [2024-10-12 16:03:41,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:41,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696415575] [2024-10-12 16:03:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:41,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696415575] [2024-10-12 16:03:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696415575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:41,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:03:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437337503] [2024-10-12 16:03:41,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:41,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:03:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:03:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:03:41,285 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:41,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:41,345 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-12 16:03:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:03:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-10-12 16:03:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:41,359 INFO L225 Difference]: With dead ends: 1511 [2024-10-12 16:03:41,359 INFO L226 Difference]: Without dead ends: 754 [2024-10-12 16:03:41,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:03:41,366 INFO L432 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:41,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:03:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-12 16:03:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-12 16:03:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-12 16:03:41,432 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 11 [2024-10-12 16:03:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:41,433 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-12 16:03:41,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-12 16:03:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-12 16:03:41,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:41,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:41,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:03:41,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:41,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash -932946815, now seen corresponding path program 1 times [2024-10-12 16:03:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083467720] [2024-10-12 16:03:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083467720] [2024-10-12 16:03:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083467720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:41,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949290831] [2024-10-12 16:03:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:41,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:03:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:03:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:41,593 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:46,210 INFO L93 Difference]: Finished difference Result 3017 states and 5755 transitions. [2024-10-12 16:03:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 16:03:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-10-12 16:03:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:46,222 INFO L225 Difference]: With dead ends: 3017 [2024-10-12 16:03:46,223 INFO L226 Difference]: Without dead ends: 2264 [2024-10-12 16:03:46,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:03:46,229 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 2419 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 1596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:46,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 197 Invalid, 5209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1596 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-12 16:03:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2024-10-12 16:03:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2256. [2024-10-12 16:03:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5352549889135254) internal successors, (3462), 2255 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3462 transitions. [2024-10-12 16:03:46,277 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3462 transitions. Word has length 11 [2024-10-12 16:03:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:46,279 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 3462 transitions. [2024-10-12 16:03:46,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3462 transitions. [2024-10-12 16:03:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 16:03:46,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:46,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:46,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:03:46,285 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:46,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2135637658, now seen corresponding path program 1 times [2024-10-12 16:03:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:46,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614769766] [2024-10-12 16:03:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:46,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614769766] [2024-10-12 16:03:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614769766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:46,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338135152] [2024-10-12 16:03:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:46,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:03:46,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:03:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:46,795 INFO L87 Difference]: Start difference. First operand 2256 states and 3462 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:50,433 INFO L93 Difference]: Finished difference Result 6050 states and 9663 transitions. [2024-10-12 16:03:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:03:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2024-10-12 16:03:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:50,446 INFO L225 Difference]: With dead ends: 6050 [2024-10-12 16:03:50,446 INFO L226 Difference]: Without dead ends: 3758 [2024-10-12 16:03:50,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:03:50,451 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 702 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:50,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 705 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-12 16:03:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2024-10-12 16:03:50,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2024-10-12 16:03:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.340963534735161) internal successors, (5038), 3757 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5038 transitions. [2024-10-12 16:03:50,496 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5038 transitions. Word has length 151 [2024-10-12 16:03:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:50,496 INFO L471 AbstractCegarLoop]: Abstraction has 3758 states and 5038 transitions. [2024-10-12 16:03:50,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5038 transitions. [2024-10-12 16:03:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-12 16:03:50,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:50,499 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:50,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:03:50,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:50,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash -6353035, now seen corresponding path program 1 times [2024-10-12 16:03:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609568880] [2024-10-12 16:03:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 16:03:50,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:50,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609568880] [2024-10-12 16:03:50,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609568880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:50,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:50,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:03:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974548192] [2024-10-12 16:03:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:50,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:50,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:50,739 INFO L87 Difference]: Start difference. First operand 3758 states and 5038 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:53,072 INFO L93 Difference]: Finished difference Result 10519 states and 14355 transitions. [2024-10-12 16:03:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 221 [2024-10-12 16:03:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:53,091 INFO L225 Difference]: With dead ends: 10519 [2024-10-12 16:03:53,092 INFO L226 Difference]: Without dead ends: 6762 [2024-10-12 16:03:53,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:53,098 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:53,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 484 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:03:53,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-10-12 16:03:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6011. [2024-10-12 16:03:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.2815307820299502) internal successors, (7702), 6010 states have internal predecessors, (7702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7702 transitions. [2024-10-12 16:03:53,173 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7702 transitions. Word has length 221 [2024-10-12 16:03:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:53,174 INFO L471 AbstractCegarLoop]: Abstraction has 6011 states and 7702 transitions. [2024-10-12 16:03:53,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7702 transitions. [2024-10-12 16:03:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-10-12 16:03:53,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:53,180 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:53,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:03:53,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:53,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 210299346, now seen corresponding path program 1 times [2024-10-12 16:03:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:53,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358271755] [2024-10-12 16:03:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 19 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 16:03:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:53,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358271755] [2024-10-12 16:03:53,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358271755] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:03:53,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790949262] [2024-10-12 16:03:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:53,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:03:53,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:03:53,568 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) [2024-10-12 16:03:53,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:03:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:53,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:03:53,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:03:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:03:53,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:03:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790949262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:03:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 16:03:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464882972] [2024-10-12 16:03:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:53,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:03:53,784 INFO L87 Difference]: Start difference. First operand 6011 states and 7702 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:56,242 INFO L93 Difference]: Finished difference Result 15025 states and 19933 transitions. [2024-10-12 16:03:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:56,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2024-10-12 16:03:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:56,262 INFO L225 Difference]: With dead ends: 15025 [2024-10-12 16:03:56,263 INFO L226 Difference]: Without dead ends: 9015 [2024-10-12 16:03:56,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:03:56,270 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 907 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:56,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 307 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:03:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9015 states. [2024-10-12 16:03:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9015 to 9015. [2024-10-12 16:03:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9014 states have (on average 1.265808741956956) internal successors, (11410), 9014 states have internal predecessors, (11410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 11410 transitions. [2024-10-12 16:03:56,370 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 11410 transitions. Word has length 234 [2024-10-12 16:03:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:56,371 INFO L471 AbstractCegarLoop]: Abstraction has 9015 states and 11410 transitions. [2024-10-12 16:03:56,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 11410 transitions. [2024-10-12 16:03:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-12 16:03:56,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:56,373 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:56,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:03:56,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:03:56,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:56,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1353415446, now seen corresponding path program 1 times [2024-10-12 16:03:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971229080] [2024-10-12 16:03:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:56,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:03:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-12 16:03:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:03:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971229080] [2024-10-12 16:03:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971229080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:03:56,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:03:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:03:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742061126] [2024-10-12 16:03:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:03:56,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:03:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:03:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:03:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:03:56,709 INFO L87 Difference]: Start difference. First operand 9015 states and 11410 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:03:59,504 INFO L93 Difference]: Finished difference Result 25539 states and 32712 transitions. [2024-10-12 16:03:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:03:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 251 [2024-10-12 16:03:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:03:59,533 INFO L225 Difference]: With dead ends: 25539 [2024-10-12 16:03:59,534 INFO L226 Difference]: Without dead ends: 16525 [2024-10-12 16:03:59,543 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 [2024-10-12 16:03:59,544 INFO L432 NwaCegarLoop]: 1315 mSDtfsCounter, 746 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:03:59,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1322 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-12 16:03:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2024-10-12 16:03:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 15774. [2024-10-12 16:03:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.252393330374691) internal successors, (19754), 15773 states have internal predecessors, (19754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 19754 transitions. [2024-10-12 16:03:59,721 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 19754 transitions. Word has length 251 [2024-10-12 16:03:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:03:59,721 INFO L471 AbstractCegarLoop]: Abstraction has 15774 states and 19754 transitions. [2024-10-12 16:03:59,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:03:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 19754 transitions. [2024-10-12 16:03:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-10-12 16:03:59,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:03:59,724 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:03:59,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:03:59,724 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:03:59,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:03:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1249858108, now seen corresponding path program 1 times [2024-10-12 16:03:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:03:59,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125794154] [2024-10-12 16:03:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:03:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:03:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:04:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125794154] [2024-10-12 16:04:00,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125794154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:00,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:00,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204038892] [2024-10-12 16:04:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:00,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:00,171 INFO L87 Difference]: Start difference. First operand 15774 states and 19754 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:02,972 INFO L93 Difference]: Finished difference Result 38306 states and 48287 transitions. [2024-10-12 16:04:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2024-10-12 16:04:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:03,005 INFO L225 Difference]: With dead ends: 38306 [2024-10-12 16:04:03,005 INFO L226 Difference]: Without dead ends: 22533 [2024-10-12 16:04:03,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:03,021 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 828 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:03,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 140 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:04:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2024-10-12 16:04:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2024-10-12 16:04:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.2340671045624) internal successors, (27806), 22532 states have internal predecessors, (27806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 27806 transitions. [2024-10-12 16:04:03,254 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 27806 transitions. Word has length 300 [2024-10-12 16:04:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:03,255 INFO L471 AbstractCegarLoop]: Abstraction has 22533 states and 27806 transitions. [2024-10-12 16:04:03,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 27806 transitions. [2024-10-12 16:04:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-12 16:04:03,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:03,258 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:03,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:04:03,259 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:03,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:03,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1734539263, now seen corresponding path program 1 times [2024-10-12 16:04:03,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:03,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739575072] [2024-10-12 16:04:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:04:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739575072] [2024-10-12 16:04:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739575072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052529278] [2024-10-12 16:04:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:03,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:03,406 INFO L87 Difference]: Start difference. First operand 22533 states and 27806 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:06,182 INFO L93 Difference]: Finished difference Result 45065 states and 55611 transitions. [2024-10-12 16:04:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 305 [2024-10-12 16:04:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:06,212 INFO L225 Difference]: With dead ends: 45065 [2024-10-12 16:04:06,213 INFO L226 Difference]: Without dead ends: 22533 [2024-10-12 16:04:06,231 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 [2024-10-12 16:04:06,231 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 736 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:06,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 185 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:04:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2024-10-12 16:04:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2024-10-12 16:04:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.221018995206817) internal successors, (27512), 22532 states have internal predecessors, (27512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 27512 transitions. [2024-10-12 16:04:06,605 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 27512 transitions. Word has length 305 [2024-10-12 16:04:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:06,606 INFO L471 AbstractCegarLoop]: Abstraction has 22533 states and 27512 transitions. [2024-10-12 16:04:06,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 27512 transitions. [2024-10-12 16:04:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-10-12 16:04:06,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:06,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:06,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:04:06,613 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:06,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 187181409, now seen corresponding path program 1 times [2024-10-12 16:04:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:06,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120336307] [2024-10-12 16:04:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-12 16:04:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120336307] [2024-10-12 16:04:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120336307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:06,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:06,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:06,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794394010] [2024-10-12 16:04:06,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:06,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:06,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:06,840 INFO L87 Difference]: Start difference. First operand 22533 states and 27512 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:09,642 INFO L93 Difference]: Finished difference Result 60836 states and 75394 transitions. [2024-10-12 16:04:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:09,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 316 [2024-10-12 16:04:09,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:09,686 INFO L225 Difference]: With dead ends: 60836 [2024-10-12 16:04:09,687 INFO L226 Difference]: Without dead ends: 38304 [2024-10-12 16:04:09,704 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 [2024-10-12 16:04:09,705 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 720 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:09,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 423 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:04:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38304 states. [2024-10-12 16:04:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38304 to 37553. [2024-10-12 16:04:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37553 states, 37552 states have (on average 1.2076853429910523) internal successors, (45351), 37552 states have internal predecessors, (45351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37553 states to 37553 states and 45351 transitions. [2024-10-12 16:04:10,013 INFO L78 Accepts]: Start accepts. Automaton has 37553 states and 45351 transitions. Word has length 316 [2024-10-12 16:04:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:10,013 INFO L471 AbstractCegarLoop]: Abstraction has 37553 states and 45351 transitions. [2024-10-12 16:04:10,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 37553 states and 45351 transitions. [2024-10-12 16:04:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-10-12 16:04:10,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:10,017 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:04:10,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:04:10,017 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:10,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:10,018 INFO L85 PathProgramCache]: Analyzing trace with hash -418020239, now seen corresponding path program 1 times [2024-10-12 16:04:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:10,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994583610] [2024-10-12 16:04:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-12 16:04:10,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994583610] [2024-10-12 16:04:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994583610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:10,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789881378] [2024-10-12 16:04:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:10,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:10,197 INFO L87 Difference]: Start difference. First operand 37553 states and 45351 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:12,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:12,933 INFO L93 Difference]: Finished difference Result 91627 states and 110978 transitions. [2024-10-12 16:04:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:12,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 342 [2024-10-12 16:04:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:12,996 INFO L225 Difference]: With dead ends: 91627 [2024-10-12 16:04:12,996 INFO L226 Difference]: Without dead ends: 54075 [2024-10-12 16:04:13,022 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 [2024-10-12 16:04:13,023 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 766 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:13,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 335 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:04:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54075 states. [2024-10-12 16:04:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54075 to 52573. [2024-10-12 16:04:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52573 states, 52572 states have (on average 1.1996880468690558) internal successors, (63070), 52572 states have internal predecessors, (63070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52573 states to 52573 states and 63070 transitions. [2024-10-12 16:04:13,475 INFO L78 Accepts]: Start accepts. Automaton has 52573 states and 63070 transitions. Word has length 342 [2024-10-12 16:04:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:13,476 INFO L471 AbstractCegarLoop]: Abstraction has 52573 states and 63070 transitions. [2024-10-12 16:04:13,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 52573 states and 63070 transitions. [2024-10-12 16:04:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-10-12 16:04:13,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:13,482 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:13,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:04:13,483 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:13,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash -160319895, now seen corresponding path program 1 times [2024-10-12 16:04:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072769209] [2024-10-12 16:04:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:13,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-10-12 16:04:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072769209] [2024-10-12 16:04:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072769209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:13,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130445207] [2024-10-12 16:04:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:13,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:13,889 INFO L87 Difference]: Start difference. First operand 52573 states and 63070 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:16,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:16,800 INFO L93 Difference]: Finished difference Result 120916 states and 145616 transitions. [2024-10-12 16:04:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:16,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 410 [2024-10-12 16:04:16,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:16,885 INFO L225 Difference]: With dead ends: 120916 [2024-10-12 16:04:16,886 INFO L226 Difference]: Without dead ends: 68344 [2024-10-12 16:04:16,922 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 [2024-10-12 16:04:16,922 INFO L432 NwaCegarLoop]: 1257 mSDtfsCounter, 695 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:16,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1263 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:04:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68344 states. [2024-10-12 16:04:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68344 to 67593. [2024-10-12 16:04:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67593 states, 67592 states have (on average 1.1709817729908865) internal successors, (79149), 67592 states have internal predecessors, (79149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67593 states to 67593 states and 79149 transitions. [2024-10-12 16:04:17,779 INFO L78 Accepts]: Start accepts. Automaton has 67593 states and 79149 transitions. Word has length 410 [2024-10-12 16:04:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:17,780 INFO L471 AbstractCegarLoop]: Abstraction has 67593 states and 79149 transitions. [2024-10-12 16:04:17,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 67593 states and 79149 transitions. [2024-10-12 16:04:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-10-12 16:04:17,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:17,786 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:17,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:04:17,787 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:17,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1859616780, now seen corresponding path program 1 times [2024-10-12 16:04:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:17,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534042433] [2024-10-12 16:04:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:17,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-12 16:04:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534042433] [2024-10-12 16:04:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534042433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822641693] [2024-10-12 16:04:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:17,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:17,963 INFO L87 Difference]: Start difference. First operand 67593 states and 79149 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:20,935 INFO L93 Difference]: Finished difference Result 160719 states and 186952 transitions. [2024-10-12 16:04:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:20,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2024-10-12 16:04:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:21,039 INFO L225 Difference]: With dead ends: 160719 [2024-10-12 16:04:21,040 INFO L226 Difference]: Without dead ends: 93127 [2024-10-12 16:04:21,059 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 [2024-10-12 16:04:21,059 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 755 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:21,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 325 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:04:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93127 states. [2024-10-12 16:04:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93127 to 87119. [2024-10-12 16:04:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87119 states, 87118 states have (on average 1.1396496705617667) internal successors, (99284), 87118 states have internal predecessors, (99284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87119 states to 87119 states and 99284 transitions. [2024-10-12 16:04:21,996 INFO L78 Accepts]: Start accepts. Automaton has 87119 states and 99284 transitions. Word has length 439 [2024-10-12 16:04:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:21,996 INFO L471 AbstractCegarLoop]: Abstraction has 87119 states and 99284 transitions. [2024-10-12 16:04:21,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 87119 states and 99284 transitions. [2024-10-12 16:04:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-10-12 16:04:22,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:22,006 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:22,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:04:22,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:22,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash 851186921, now seen corresponding path program 1 times [2024-10-12 16:04:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988827837] [2024-10-12 16:04:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-12 16:04:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:22,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988827837] [2024-10-12 16:04:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988827837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:22,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:22,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386332216] [2024-10-12 16:04:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:22,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:22,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:22,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:22,378 INFO L87 Difference]: Start difference. First operand 87119 states and 99284 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:25,171 INFO L93 Difference]: Finished difference Result 174237 states and 198567 transitions. [2024-10-12 16:04:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 461 [2024-10-12 16:04:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:25,385 INFO L225 Difference]: With dead ends: 174237 [2024-10-12 16:04:25,385 INFO L226 Difference]: Without dead ends: 87119 [2024-10-12 16:04:25,413 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 [2024-10-12 16:04:25,416 INFO L432 NwaCegarLoop]: 1274 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:25,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1281 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:04:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87119 states. [2024-10-12 16:04:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87119 to 87119. [2024-10-12 16:04:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87119 states, 87118 states have (on average 1.111056268509378) internal successors, (96793), 87118 states have internal predecessors, (96793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87119 states to 87119 states and 96793 transitions. [2024-10-12 16:04:26,417 INFO L78 Accepts]: Start accepts. Automaton has 87119 states and 96793 transitions. Word has length 461 [2024-10-12 16:04:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:26,417 INFO L471 AbstractCegarLoop]: Abstraction has 87119 states and 96793 transitions. [2024-10-12 16:04:26,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 87119 states and 96793 transitions. [2024-10-12 16:04:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-10-12 16:04:26,425 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:26,425 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:26,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:04:26,425 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:26,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1631127923, now seen corresponding path program 1 times [2024-10-12 16:04:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166534436] [2024-10-12 16:04:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-12 16:04:26,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:26,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166534436] [2024-10-12 16:04:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166534436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:26,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898120752] [2024-10-12 16:04:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:26,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:26,789 INFO L87 Difference]: Start difference. First operand 87119 states and 96793 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:29,641 INFO L93 Difference]: Finished difference Result 194514 states and 216234 transitions. [2024-10-12 16:04:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:29,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 476 [2024-10-12 16:04:29,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:29,797 INFO L225 Difference]: With dead ends: 194514 [2024-10-12 16:04:29,797 INFO L226 Difference]: Without dead ends: 107396 [2024-10-12 16:04:30,027 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 [2024-10-12 16:04:30,031 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 762 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:30,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 242 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:04:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107396 states. [2024-10-12 16:04:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107396 to 105894. [2024-10-12 16:04:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105894 states, 105893 states have (on average 1.0953509674860473) internal successors, (115990), 105893 states have internal predecessors, (115990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105894 states to 105894 states and 115990 transitions. [2024-10-12 16:04:31,026 INFO L78 Accepts]: Start accepts. Automaton has 105894 states and 115990 transitions. Word has length 476 [2024-10-12 16:04:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:31,027 INFO L471 AbstractCegarLoop]: Abstraction has 105894 states and 115990 transitions. [2024-10-12 16:04:31,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand 105894 states and 115990 transitions. [2024-10-12 16:04:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-10-12 16:04:31,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:31,040 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:04:31,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:04:31,041 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:31,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash 292326011, now seen corresponding path program 1 times [2024-10-12 16:04:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017824351] [2024-10-12 16:04:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 27 proven. 259 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-12 16:04:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017824351] [2024-10-12 16:04:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017824351] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:04:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248844915] [2024-10-12 16:04:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:31,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:04:31,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:04:31,749 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) [2024-10-12 16:04:31,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:04:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:32,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:04:32,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:04:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-10-12 16:04:32,330 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:04:32,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248844915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:32,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:04:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:04:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414105010] [2024-10-12 16:04:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:32,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:04:32,334 INFO L87 Difference]: Start difference. First operand 105894 states and 115990 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:35,444 INFO L93 Difference]: Finished difference Result 211787 states and 231979 transitions. [2024-10-12 16:04:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 481 [2024-10-12 16:04:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:35,565 INFO L225 Difference]: With dead ends: 211787 [2024-10-12 16:04:35,566 INFO L226 Difference]: Without dead ends: 105894 [2024-10-12 16:04:35,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:04:35,596 INFO L432 NwaCegarLoop]: 989 mSDtfsCounter, 612 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:35,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 996 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:04:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105894 states. [2024-10-12 16:04:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105894 to 101388. [2024-10-12 16:04:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101388 states, 101387 states have (on average 1.0740824760570882) internal successors, (108898), 101387 states have internal predecessors, (108898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101388 states to 101388 states and 108898 transitions. [2024-10-12 16:04:36,712 INFO L78 Accepts]: Start accepts. Automaton has 101388 states and 108898 transitions. Word has length 481 [2024-10-12 16:04:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:36,712 INFO L471 AbstractCegarLoop]: Abstraction has 101388 states and 108898 transitions. [2024-10-12 16:04:36,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 101388 states and 108898 transitions. [2024-10-12 16:04:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-12 16:04:36,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:36,719 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:36,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:04:36,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 16:04:36,924 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:36,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -161901011, now seen corresponding path program 1 times [2024-10-12 16:04:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118779929] [2024-10-12 16:04:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 536 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-12 16:04:37,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118779929] [2024-10-12 16:04:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118779929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:37,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557170102] [2024-10-12 16:04:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:37,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:37,591 INFO L87 Difference]: Start difference. First operand 101388 states and 108898 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:40,626 INFO L93 Difference]: Finished difference Result 209534 states and 224736 transitions. [2024-10-12 16:04:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 485 [2024-10-12 16:04:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:40,766 INFO L225 Difference]: With dead ends: 209534 [2024-10-12 16:04:40,766 INFO L226 Difference]: Without dead ends: 108147 [2024-10-12 16:04:40,823 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 [2024-10-12 16:04:40,824 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 722 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:40,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1197 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:04:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108147 states. [2024-10-12 16:04:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108147 to 102139. [2024-10-12 16:04:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102139 states, 102138 states have (on average 1.0611721396541933) internal successors, (108386), 102138 states have internal predecessors, (108386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102139 states to 102139 states and 108386 transitions. [2024-10-12 16:04:42,103 INFO L78 Accepts]: Start accepts. Automaton has 102139 states and 108386 transitions. Word has length 485 [2024-10-12 16:04:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:42,103 INFO L471 AbstractCegarLoop]: Abstraction has 102139 states and 108386 transitions. [2024-10-12 16:04:42,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 102139 states and 108386 transitions. [2024-10-12 16:04:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-10-12 16:04:42,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:42,109 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:42,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:04:42,109 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:42,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash 562897391, now seen corresponding path program 1 times [2024-10-12 16:04:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:42,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481852426] [2024-10-12 16:04:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-12 16:04:42,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:42,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481852426] [2024-10-12 16:04:42,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481852426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:42,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:42,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297440288] [2024-10-12 16:04:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:42,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:42,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:42,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:42,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:42,789 INFO L87 Difference]: Start difference. First operand 102139 states and 108386 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:45,895 INFO L93 Difference]: Finished difference Result 209534 states and 222125 transitions. [2024-10-12 16:04:45,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:45,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 489 [2024-10-12 16:04:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:46,013 INFO L225 Difference]: With dead ends: 209534 [2024-10-12 16:04:46,013 INFO L226 Difference]: Without dead ends: 106645 [2024-10-12 16:04:46,048 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 [2024-10-12 16:04:46,049 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:46,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1009 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:04:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106645 states. [2024-10-12 16:04:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106645 to 98384. [2024-10-12 16:04:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98384 states, 98383 states have (on average 1.0506591585944727) internal successors, (103367), 98383 states have internal predecessors, (103367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98384 states to 98384 states and 103367 transitions. [2024-10-12 16:04:47,249 INFO L78 Accepts]: Start accepts. Automaton has 98384 states and 103367 transitions. Word has length 489 [2024-10-12 16:04:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:47,250 INFO L471 AbstractCegarLoop]: Abstraction has 98384 states and 103367 transitions. [2024-10-12 16:04:47,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 98384 states and 103367 transitions. [2024-10-12 16:04:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-10-12 16:04:47,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:47,268 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:47,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:04:47,269 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:47,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1086638556, now seen corresponding path program 1 times [2024-10-12 16:04:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530215103] [2024-10-12 16:04:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-10-12 16:04:48,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:48,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530215103] [2024-10-12 16:04:48,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530215103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:48,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:48,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187287981] [2024-10-12 16:04:48,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:48,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:48,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:48,158 INFO L87 Difference]: Start difference. First operand 98384 states and 103367 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:50,894 INFO L93 Difference]: Finished difference Result 216293 states and 227478 transitions. [2024-10-12 16:04:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:50,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 631 [2024-10-12 16:04:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:51,025 INFO L225 Difference]: With dead ends: 216293 [2024-10-12 16:04:51,025 INFO L226 Difference]: Without dead ends: 118661 [2024-10-12 16:04:51,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:51,081 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 757 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:51,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 159 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:04:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118661 states. [2024-10-12 16:04:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118661 to 113404. [2024-10-12 16:04:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113404 states, 113403 states have (on average 1.049487226969304) internal successors, (119015), 113403 states have internal predecessors, (119015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113404 states to 113404 states and 119015 transitions. [2024-10-12 16:04:52,299 INFO L78 Accepts]: Start accepts. Automaton has 113404 states and 119015 transitions. Word has length 631 [2024-10-12 16:04:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:52,300 INFO L471 AbstractCegarLoop]: Abstraction has 113404 states and 119015 transitions. [2024-10-12 16:04:52,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 113404 states and 119015 transitions. [2024-10-12 16:04:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2024-10-12 16:04:52,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:52,312 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:52,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 16:04:52,313 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:52,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1790392837, now seen corresponding path program 1 times [2024-10-12 16:04:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:52,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505245649] [2024-10-12 16:04:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:04:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2024-10-12 16:04:52,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:04:52,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505245649] [2024-10-12 16:04:52,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505245649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:04:52,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:04:52,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:04:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599395510] [2024-10-12 16:04:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:04:52,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:04:52,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:04:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:04:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:04:52,919 INFO L87 Difference]: Start difference. First operand 113404 states and 119015 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:04:55,727 INFO L93 Difference]: Finished difference Result 226807 states and 238074 transitions. [2024-10-12 16:04:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:04:55,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 633 [2024-10-12 16:04:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:04:55,858 INFO L225 Difference]: With dead ends: 226807 [2024-10-12 16:04:55,859 INFO L226 Difference]: Without dead ends: 114155 [2024-10-12 16:04:55,889 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 [2024-10-12 16:04:55,889 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 862 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:04:55,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1114 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 16:04:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114155 states. [2024-10-12 16:04:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114155 to 113404. [2024-10-12 16:04:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113404 states, 113403 states have (on average 1.0407661172984841) internal successors, (118026), 113403 states have internal predecessors, (118026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113404 states to 113404 states and 118026 transitions. [2024-10-12 16:04:57,040 INFO L78 Accepts]: Start accepts. Automaton has 113404 states and 118026 transitions. Word has length 633 [2024-10-12 16:04:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:04:57,040 INFO L471 AbstractCegarLoop]: Abstraction has 113404 states and 118026 transitions. [2024-10-12 16:04:57,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:04:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 113404 states and 118026 transitions. [2024-10-12 16:04:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2024-10-12 16:04:57,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:04:57,121 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:04:57,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:04:57,121 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:04:57,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:04:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2143805164, now seen corresponding path program 1 times [2024-10-12 16:04:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:04:57,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622524329] [2024-10-12 16:04:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:04:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:04:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1554 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 16:05:01,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622524329] [2024-10-12 16:05:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622524329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 16:05:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748790464] [2024-10-12 16:05:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:01,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:05:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:05:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:05:01,058 INFO L87 Difference]: Start difference. First operand 113404 states and 118026 transitions. Second operand has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)