./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label14.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 6b9a8cf062c769ab6372057423b232460c4eac80bd30ee0857d87935f050ecf1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:20:02,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:20:02,361 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:20:02,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:20:02,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:20:02,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:20:02,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:20:02,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:20:02,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:20:02,412 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:20:02,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:20:02,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:20:02,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:20:02,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:20:02,416 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:20:02,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:20:02,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:20:02,417 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:20:02,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:20:02,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:20:02,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:20:02,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:20:02,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:20:02,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:20:02,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:20:02,421 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:20:02,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:20:02,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:20:02,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:20:02,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:20:02,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:20:02,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:20:02,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:20:02,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:20:02,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:20:02,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:20:02,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:20:02,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:20:02,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:20:02,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:20:02,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:20:02,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:20:02,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b9a8cf062c769ab6372057423b232460c4eac80bd30ee0857d87935f050ecf1 [2024-11-08 11:20:02,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:20:02,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:20:02,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:20:02,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:20:02,699 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:20:02,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label14.c [2024-11-08 11:20:04,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:20:04,617 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:20:04,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label14.c [2024-11-08 11:20:04,660 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db886d25/f2efb303591f429ab2536b6c07fb2e74/FLAGd11604489 [2024-11-08 11:20:04,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db886d25/f2efb303591f429ab2536b6c07fb2e74 [2024-11-08 11:20:04,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:20:04,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:20:04,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:20:04,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:20:04,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:20:04,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:20:04" (1/1) ... [2024-11-08 11:20:04,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d302a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:04, skipping insertion in model container [2024-11-08 11:20:04,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:20:04" (1/1) ... [2024-11-08 11:20:04,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:20:05,176 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label14.c[5911,5924] [2024-11-08 11:20:06,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:20:06,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:20:06,214 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label14.c[5911,5924] [2024-11-08 11:20:06,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:20:06,697 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:20:06,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06 WrapperNode [2024-11-08 11:20:06,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:20:06,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:20:06,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:20:06,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:20:06,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:06,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:07,354 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-08 11:20:07,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:20:07,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:20:07,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:20:07,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:20:07,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:07,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:07,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:07,888 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 11:20:07,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:07,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:08,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:08,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:08,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:08,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:08,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:20:08,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:20:08,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:20:08,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:20:08,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (1/1) ... [2024-11-08 11:20:08,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:20:08,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:20:08,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 11:20:08,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 11:20:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:20:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:20:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:20:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:20:08,485 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:20:08,487 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:20:14,140 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-08 11:20:14,140 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:20:14,177 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:20:14,177 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:20:14,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:20:14 BoogieIcfgContainer [2024-11-08 11:20:14,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:20:14,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:20:14,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:20:14,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:20:14,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:20:04" (1/3) ... [2024-11-08 11:20:14,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffbe414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:20:14, skipping insertion in model container [2024-11-08 11:20:14,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:20:06" (2/3) ... [2024-11-08 11:20:14,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffbe414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:20:14, skipping insertion in model container [2024-11-08 11:20:14,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:20:14" (3/3) ... [2024-11-08 11:20:14,188 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2024-11-08 11:20:14,204 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:20:14,204 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:20:14,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:20:14,300 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;@7895d27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:20:14,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:20:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 11:20:14,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:14,320 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:14,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:14,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:14,328 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2024-11-08 11:20:14,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875961180] [2024-11-08 11:20:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:14,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:20:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875961180] [2024-11-08 11:20:14,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875961180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:14,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:14,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:20:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352820903] [2024-11-08 11:20:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:14,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:20:14,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:20:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:20:14,958 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:21,298 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2024-11-08 11:20:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:20:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-08 11:20:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:21,338 INFO L225 Difference]: With dead ends: 3829 [2024-11-08 11:20:21,339 INFO L226 Difference]: Without dead ends: 2664 [2024-11-08 11:20:21,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:20:21,355 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 2711 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:21,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-08 11:20:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-08 11:20:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2024-11-08 11:20:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2024-11-08 11:20:21,495 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 41 [2024-11-08 11:20:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:21,496 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2024-11-08 11:20:21,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2024-11-08 11:20:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-08 11:20:21,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:21,502 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:21,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:20:21,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:21,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 791032719, now seen corresponding path program 1 times [2024-11-08 11:20:21,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:21,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562699781] [2024-11-08 11:20:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:21,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 11:20:21,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:21,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562699781] [2024-11-08 11:20:21,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562699781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:21,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:21,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856449234] [2024-11-08 11:20:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:21,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:21,844 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:25,507 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2024-11-08 11:20:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-08 11:20:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:25,524 INFO L225 Difference]: With dead ends: 6142 [2024-11-08 11:20:25,524 INFO L226 Difference]: Without dead ends: 4268 [2024-11-08 11:20:25,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:25,528 INFO L432 NwaCegarLoop]: 1039 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:25,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1188 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-08 11:20:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2024-11-08 11:20:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2024-11-08 11:20:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2024-11-08 11:20:25,599 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 166 [2024-11-08 11:20:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:25,600 INFO L471 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2024-11-08 11:20:25,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2024-11-08 11:20:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-08 11:20:25,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:25,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:20:25,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:20:25,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:25,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:25,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1372340963, now seen corresponding path program 1 times [2024-11-08 11:20:25,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:25,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264002290] [2024-11-08 11:20:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 11:20:25,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:25,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264002290] [2024-11-08 11:20:25,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264002290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:25,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:25,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14957919] [2024-11-08 11:20:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:25,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:25,856 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:28,914 INFO L93 Difference]: Finished difference Result 10897 states and 15274 transitions. [2024-11-08 11:20:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:28,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 208 [2024-11-08 11:20:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:28,939 INFO L225 Difference]: With dead ends: 10897 [2024-11-08 11:20:28,940 INFO L226 Difference]: Without dead ends: 7432 [2024-11-08 11:20:28,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:28,948 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:28,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 955 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:20:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2024-11-08 11:20:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7426. [2024-11-08 11:20:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2024-11-08 11:20:29,141 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 208 [2024-11-08 11:20:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:29,143 INFO L471 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2024-11-08 11:20:29,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2024-11-08 11:20:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-08 11:20:29,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:29,151 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:29,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:20:29,151 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:29,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1651057734, now seen corresponding path program 1 times [2024-11-08 11:20:29,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:29,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808515620] [2024-11-08 11:20:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 11:20:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808515620] [2024-11-08 11:20:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808515620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203557482] [2024-11-08 11:20:29,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:29,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:29,370 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:32,466 INFO L93 Difference]: Finished difference Result 19619 states and 25904 transitions. [2024-11-08 11:20:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 222 [2024-11-08 11:20:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:32,512 INFO L225 Difference]: With dead ends: 19619 [2024-11-08 11:20:32,512 INFO L226 Difference]: Without dead ends: 12982 [2024-11-08 11:20:32,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:32,524 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:32,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 637 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:20:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-11-08 11:20:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12975. [2024-11-08 11:20:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2719284723292739) internal successors, (16502), 12974 states have internal predecessors, (16502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16502 transitions. [2024-11-08 11:20:32,753 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16502 transitions. Word has length 222 [2024-11-08 11:20:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:32,754 INFO L471 AbstractCegarLoop]: Abstraction has 12975 states and 16502 transitions. [2024-11-08 11:20:32,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16502 transitions. [2024-11-08 11:20:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-08 11:20:32,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:32,758 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:20:32,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:20:32,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:32,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1939340195, now seen corresponding path program 1 times [2024-11-08 11:20:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820869935] [2024-11-08 11:20:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 11:20:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820869935] [2024-11-08 11:20:33,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820869935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:33,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:33,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975878203] [2024-11-08 11:20:33,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:33,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:33,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:33,011 INFO L87 Difference]: Start difference. First operand 12975 states and 16502 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:36,145 INFO L93 Difference]: Finished difference Result 36180 states and 46592 transitions. [2024-11-08 11:20:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:36,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-11-08 11:20:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:36,188 INFO L225 Difference]: With dead ends: 36180 [2024-11-08 11:20:36,189 INFO L226 Difference]: Without dead ends: 23994 [2024-11-08 11:20:36,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:36,209 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:36,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:20:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2024-11-08 11:20:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 22416. [2024-11-08 11:20:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22416 states, 22415 states have (on average 1.211153245594468) internal successors, (27148), 22415 states have internal predecessors, (27148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 27148 transitions. [2024-11-08 11:20:36,540 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 27148 transitions. Word has length 238 [2024-11-08 11:20:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:36,541 INFO L471 AbstractCegarLoop]: Abstraction has 22416 states and 27148 transitions. [2024-11-08 11:20:36,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 27148 transitions. [2024-11-08 11:20:36,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-08 11:20:36,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:36,546 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:36,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:20:36,547 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:36,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash -108620366, now seen corresponding path program 1 times [2024-11-08 11:20:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:36,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867935004] [2024-11-08 11:20:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:36,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 11:20:36,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:36,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867935004] [2024-11-08 11:20:36,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867935004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:36,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:36,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:20:36,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877525221] [2024-11-08 11:20:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:36,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:36,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:36,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:36,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:36,787 INFO L87 Difference]: Start difference. First operand 22416 states and 27148 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:40,323 INFO L93 Difference]: Finished difference Result 55858 states and 69068 transitions. [2024-11-08 11:20:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:40,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2024-11-08 11:20:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:40,384 INFO L225 Difference]: With dead ends: 55858 [2024-11-08 11:20:40,384 INFO L226 Difference]: Without dead ends: 34231 [2024-11-08 11:20:40,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:40,413 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 888 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:40,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 11:20:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2024-11-08 11:20:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 33434. [2024-11-08 11:20:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1906200460622738) internal successors, (39806), 33433 states have internal predecessors, (39806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39806 transitions. [2024-11-08 11:20:40,875 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39806 transitions. Word has length 281 [2024-11-08 11:20:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:40,876 INFO L471 AbstractCegarLoop]: Abstraction has 33434 states and 39806 transitions. [2024-11-08 11:20:40,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39806 transitions. [2024-11-08 11:20:40,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-08 11:20:40,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:40,883 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:40,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:20:40,883 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:40,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1558582370, now seen corresponding path program 1 times [2024-11-08 11:20:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:40,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000825831] [2024-11-08 11:20:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 11:20:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000825831] [2024-11-08 11:20:41,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000825831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:41,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:20:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96260114] [2024-11-08 11:20:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:41,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:20:41,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:20:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:20:41,174 INFO L87 Difference]: Start difference. First operand 33434 states and 39806 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:47,295 INFO L93 Difference]: Finished difference Result 117462 states and 141040 transitions. [2024-11-08 11:20:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:20:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2024-11-08 11:20:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:47,422 INFO L225 Difference]: With dead ends: 117462 [2024-11-08 11:20:47,423 INFO L226 Difference]: Without dead ends: 84817 [2024-11-08 11:20:47,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:20:47,466 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 1729 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6676 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 7793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 6676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:47,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 733 Invalid, 7793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1117 Valid, 6676 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-08 11:20:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84817 states. [2024-11-08 11:20:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84817 to 84687. [2024-11-08 11:20:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84687 states, 84686 states have (on average 1.1723425359563564) internal successors, (99281), 84686 states have internal predecessors, (99281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84687 states to 84687 states and 99281 transitions. [2024-11-08 11:20:48,843 INFO L78 Accepts]: Start accepts. Automaton has 84687 states and 99281 transitions. Word has length 329 [2024-11-08 11:20:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:48,843 INFO L471 AbstractCegarLoop]: Abstraction has 84687 states and 99281 transitions. [2024-11-08 11:20:48,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 84687 states and 99281 transitions. [2024-11-08 11:20:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-08 11:20:48,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:48,850 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:48,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:20:48,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:48,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash -350269877, now seen corresponding path program 1 times [2024-11-08 11:20:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:48,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795121819] [2024-11-08 11:20:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:48,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-08 11:20:49,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795121819] [2024-11-08 11:20:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795121819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:49,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:20:49,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:20:49,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842371237] [2024-11-08 11:20:49,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:49,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:49,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:49,489 INFO L87 Difference]: Start difference. First operand 84687 states and 99281 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:52,503 INFO L93 Difference]: Finished difference Result 158351 states and 186725 transitions. [2024-11-08 11:20:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:52,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2024-11-08 11:20:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:52,626 INFO L225 Difference]: With dead ends: 158351 [2024-11-08 11:20:52,627 INFO L226 Difference]: Without dead ends: 84696 [2024-11-08 11:20:52,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:20:52,818 INFO L432 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:52,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:20:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84696 states. [2024-11-08 11:20:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84696 to 84687. [2024-11-08 11:20:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84687 states, 84686 states have (on average 1.1715749946862528) internal successors, (99216), 84686 states have internal predecessors, (99216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84687 states to 84687 states and 99216 transitions. [2024-11-08 11:20:53,797 INFO L78 Accepts]: Start accepts. Automaton has 84687 states and 99216 transitions. Word has length 338 [2024-11-08 11:20:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:20:53,798 INFO L471 AbstractCegarLoop]: Abstraction has 84687 states and 99216 transitions. [2024-11-08 11:20:53,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 84687 states and 99216 transitions. [2024-11-08 11:20:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-08 11:20:53,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:20:53,807 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:20:53,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:20:53,807 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:20:53,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:20:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1068831891, now seen corresponding path program 1 times [2024-11-08 11:20:53,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:20:53,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184437241] [2024-11-08 11:20:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:53,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:20:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 11:20:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:20:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184437241] [2024-11-08 11:20:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184437241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:20:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269018309] [2024-11-08 11:20:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:20:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:20:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:20:55,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:20:55,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:20:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:20:55,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:20:55,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:20:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-08 11:20:56,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:20:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269018309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:20:56,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:20:56,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-08 11:20:56,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619631907] [2024-11-08 11:20:56,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:20:56,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:20:56,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:20:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:20:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:20:56,045 INFO L87 Difference]: Start difference. First operand 84687 states and 99216 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:20:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:20:59,081 INFO L93 Difference]: Finished difference Result 168583 states and 197637 transitions. [2024-11-08 11:20:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:20:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2024-11-08 11:20:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:20:59,177 INFO L225 Difference]: With dead ends: 168583 [2024-11-08 11:20:59,177 INFO L226 Difference]: Without dead ends: 84685 [2024-11-08 11:20:59,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:20:59,202 INFO L432 NwaCegarLoop]: 1365 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:20:59,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1447 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:20:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84685 states. [2024-11-08 11:21:00,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84685 to 83897. [2024-11-08 11:21:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83897 states, 83896 states have (on average 1.1277891675407647) internal successors, (94617), 83896 states have internal predecessors, (94617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83897 states to 83897 states and 94617 transitions. [2024-11-08 11:21:00,275 INFO L78 Accepts]: Start accepts. Automaton has 83897 states and 94617 transitions. Word has length 367 [2024-11-08 11:21:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:00,275 INFO L471 AbstractCegarLoop]: Abstraction has 83897 states and 94617 transitions. [2024-11-08 11:21:00,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 83897 states and 94617 transitions. [2024-11-08 11:21:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-08 11:21:00,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:00,283 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:00,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:21:00,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:00,484 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:00,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1731675346, now seen corresponding path program 1 times [2024-11-08 11:21:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:00,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624277757] [2024-11-08 11:21:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-08 11:21:00,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:00,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624277757] [2024-11-08 11:21:00,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624277757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:00,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:00,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:00,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307607968] [2024-11-08 11:21:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:00,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:00,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:00,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:00,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:00,980 INFO L87 Difference]: Start difference. First operand 83897 states and 94617 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:04,554 INFO L93 Difference]: Finished difference Result 192985 states and 220141 transitions. [2024-11-08 11:21:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:04,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 397 [2024-11-08 11:21:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:04,693 INFO L225 Difference]: With dead ends: 192985 [2024-11-08 11:21:04,694 INFO L226 Difference]: Without dead ends: 109877 [2024-11-08 11:21:04,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:04,733 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 892 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:04,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 944 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:21:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109877 states. [2024-11-08 11:21:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109877 to 108283. [2024-11-08 11:21:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108283 states, 108282 states have (on average 1.1321364585064924) internal successors, (122590), 108282 states have internal predecessors, (122590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108283 states to 108283 states and 122590 transitions. [2024-11-08 11:21:06,343 INFO L78 Accepts]: Start accepts. Automaton has 108283 states and 122590 transitions. Word has length 397 [2024-11-08 11:21:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:06,344 INFO L471 AbstractCegarLoop]: Abstraction has 108283 states and 122590 transitions. [2024-11-08 11:21:06,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 108283 states and 122590 transitions. [2024-11-08 11:21:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-08 11:21:06,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:06,354 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:06,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:21:06,354 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:06,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:06,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1783059347, now seen corresponding path program 1 times [2024-11-08 11:21:06,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:06,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195818117] [2024-11-08 11:21:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:06,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-08 11:21:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195818117] [2024-11-08 11:21:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195818117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:21:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:21:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212913689] [2024-11-08 11:21:06,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:06,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:06,653 INFO L87 Difference]: Start difference. First operand 108283 states and 122590 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:10,630 INFO L93 Difference]: Finished difference Result 241763 states and 276153 transitions. [2024-11-08 11:21:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 435 [2024-11-08 11:21:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:10,800 INFO L225 Difference]: With dead ends: 241763 [2024-11-08 11:21:10,801 INFO L226 Difference]: Without dead ends: 134269 [2024-11-08 11:21:10,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:21:10,866 INFO L432 NwaCegarLoop]: 1787 mSDtfsCounter, 781 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:21:10,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 11:21:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134269 states. [2024-11-08 11:21:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134269 to 134252. [2024-11-08 11:21:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134252 states, 134251 states have (on average 1.1154032372198346) internal successors, (149744), 134251 states have internal predecessors, (149744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134252 states to 134252 states and 149744 transitions. [2024-11-08 11:21:12,586 INFO L78 Accepts]: Start accepts. Automaton has 134252 states and 149744 transitions. Word has length 435 [2024-11-08 11:21:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:21:12,587 INFO L471 AbstractCegarLoop]: Abstraction has 134252 states and 149744 transitions. [2024-11-08 11:21:12,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 134252 states and 149744 transitions. [2024-11-08 11:21:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-11-08 11:21:12,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:21:12,601 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:21:12,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:21:12,601 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:21:12,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:21:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1750126426, now seen corresponding path program 1 times [2024-11-08 11:21:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:21:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777190676] [2024-11-08 11:21:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:21:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 315 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 11:21:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:21:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777190676] [2024-11-08 11:21:14,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777190676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:21:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439076482] [2024-11-08 11:21:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:21:14,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:21:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:21:14,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:21:14,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:21:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:21:14,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:21:14,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:21:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 11:21:15,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:21:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439076482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:21:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:21:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-08 11:21:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975926081] [2024-11-08 11:21:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:21:15,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:21:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:21:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:21:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:21:15,177 INFO L87 Difference]: Start difference. First operand 134252 states and 149744 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:21:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:21:18,485 INFO L93 Difference]: Finished difference Result 261381 states and 293523 transitions. [2024-11-08 11:21:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:21:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 471 [2024-11-08 11:21:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:21:18,652 INFO L225 Difference]: With dead ends: 261381 [2024-11-08 11:21:18,652 INFO L226 Difference]: Without dead ends: 143666