/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:51:25,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:51:25,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:51:25,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:51:25,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:51:25,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:51:25,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:51:25,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:51:25,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:51:25,657 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:51:25,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:51:25,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:51:25,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:51:25,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:51:25,658 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:51:25,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:51:25,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:51:25,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:51:25,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:51:25,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:51:25,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:51:25,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:51:25,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:51:25,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:51:25,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:51:25,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:51:25,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:51:25,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:51:25,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:51:25,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:51:25,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:51:25,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:51:25,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:51:25,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:51:25,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:51:25,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:51:25,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:51:25,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:51:25,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:51:25,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:51:25,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:51:25,895 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:51:25,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12.c [2023-12-20 17:51:27,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:51:27,545 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:51:27,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12.c [2023-12-20 17:51:27,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68d67375/15276d9217c942a99a6e4e32cf6267ea/FLAG4ba87e441 [2023-12-20 17:51:27,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68d67375/15276d9217c942a99a6e4e32cf6267ea [2023-12-20 17:51:27,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:51:27,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:51:27,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:51:27,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:51:27,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:51:27,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:27" (1/1) ... [2023-12-20 17:51:27,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43688e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:27, skipping insertion in model container [2023-12-20 17:51:27,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:27" (1/1) ... [2023-12-20 17:51:27,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:51:27,936 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12.c[5900,5913] [2023-12-20 17:51:28,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:51:28,846 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:51:28,865 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12.c[5900,5913] [2023-12-20 17:51:29,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:51:29,458 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:51:29,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29 WrapperNode [2023-12-20 17:51:29,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:51:29,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:51:29,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:51:29,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:51:29,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:29,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,078 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-20 17:51:30,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:51:30,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:51:30,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:51:30,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:51:30,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,308 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,546 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]. [2023-12-20 17:51:30,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:30,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:31,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:31,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:51:31,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:51:31,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:51:31,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:51:31,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (1/1) ... [2023-12-20 17:51:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:51:31,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:51:31,229 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) [2023-12-20 17:51:31,255 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 [2023-12-20 17:51:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:51:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:51:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:51:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:51:31,327 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:51:31,329 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:51:37,300 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:51:37,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:51:37,361 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:51:37,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:37 BoogieIcfgContainer [2023-12-20 17:51:37,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:51:37,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:51:37,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:51:37,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:51:37,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:51:27" (1/3) ... [2023-12-20 17:51:37,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8d641d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:37, skipping insertion in model container [2023-12-20 17:51:37,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:29" (2/3) ... [2023-12-20 17:51:37,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8d641d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:37, skipping insertion in model container [2023-12-20 17:51:37,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:37" (3/3) ... [2023-12-20 17:51:37,367 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12.c [2023-12-20 17:51:37,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:51:37,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:51:37,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:51:37,470 INFO L357 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, mHoare=true, 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;@2a82665c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:51:37,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:51:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 17:51:37,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:51:37,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:51:37,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:51:37,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:51:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1093240157, now seen corresponding path program 1 times [2023-12-20 17:51:37,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:51:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144323690] [2023-12-20 17:51:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:51:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:51:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:51:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:51:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:51:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144323690] [2023-12-20 17:51:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144323690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:51:37,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:51:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:51:37,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687224836] [2023-12-20 17:51:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:51:37,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:51:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:51:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:51:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:51:37,669 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:51:37,741 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-20 17:51:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:51:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 17:51:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:51:37,759 INFO L225 Difference]: With dead ends: 3371 [2023-12-20 17:51:37,760 INFO L226 Difference]: Without dead ends: 1684 [2023-12-20 17:51:37,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:51:37,768 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:51:37,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:51:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-20 17:51:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-20 17:51:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-20 17:51:37,837 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 43 [2023-12-20 17:51:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:51:37,838 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-20 17:51:37,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-20 17:51:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 17:51:37,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:51:37,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:51:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:51:37,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:51:37,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:51:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1555694283, now seen corresponding path program 1 times [2023-12-20 17:51:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:51:37,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849191205] [2023-12-20 17:51:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:51:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:51:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:51:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:51:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:51:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849191205] [2023-12-20 17:51:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849191205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:51:37,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:51:37,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:51:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217862719] [2023-12-20 17:51:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:51:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:51:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:51:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:51:37,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:51:37,936 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:51:44,004 INFO L93 Difference]: Finished difference Result 4862 states and 9131 transitions. [2023-12-20 17:51:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:51:44,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 17:51:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:51:44,017 INFO L225 Difference]: With dead ends: 4862 [2023-12-20 17:51:44,018 INFO L226 Difference]: Without dead ends: 3179 [2023-12-20 17:51:44,019 INFO L412 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 [2023-12-20 17:51:44,024 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 1604 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 2020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2020 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:51:44,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1110 Invalid, 6161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2020 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 17:51:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-12-20 17:51:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3121. [2023-12-20 17:51:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3120 states have (on average 1.728525641025641) internal successors, (5393), 3120 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5393 transitions. [2023-12-20 17:51:44,094 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5393 transitions. Word has length 43 [2023-12-20 17:51:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:51:44,094 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 5393 transitions. [2023-12-20 17:51:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5393 transitions. [2023-12-20 17:51:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 17:51:44,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:51:44,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:51:44,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:51:44,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:51:44,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:51:44,110 INFO L85 PathProgramCache]: Analyzing trace with hash 484246023, now seen corresponding path program 1 times [2023-12-20 17:51:44,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:51:44,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104729138] [2023-12-20 17:51:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:51:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:51:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:51:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:51:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:51:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104729138] [2023-12-20 17:51:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104729138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:51:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:51:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:51:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958105273] [2023-12-20 17:51:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:51:44,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:51:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:51:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:51:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:51:44,285 INFO L87 Difference]: Start difference. First operand 3121 states and 5393 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:51:50,602 INFO L93 Difference]: Finished difference Result 9134 states and 15859 transitions. [2023-12-20 17:51:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:51:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-20 17:51:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:51:50,644 INFO L225 Difference]: With dead ends: 9134 [2023-12-20 17:51:50,645 INFO L226 Difference]: Without dead ends: 6014 [2023-12-20 17:51:50,648 INFO L412 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 [2023-12-20 17:51:50,656 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2533 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5119 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:51:50,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 990 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5119 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-20 17:51:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2023-12-20 17:51:50,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 6012. [2023-12-20 17:51:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.6709366162036268) internal successors, (10044), 6011 states have internal predecessors, (10044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 10044 transitions. [2023-12-20 17:51:50,820 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 10044 transitions. Word has length 111 [2023-12-20 17:51:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:51:50,825 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 10044 transitions. [2023-12-20 17:51:50,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 10044 transitions. [2023-12-20 17:51:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 17:51:50,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:51:50,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:51:50,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:51:50,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:51:50,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:51:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash 582349316, now seen corresponding path program 1 times [2023-12-20 17:51:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:51:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306219330] [2023-12-20 17:51:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:51:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:51:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:51:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:51:51,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:51:51,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306219330] [2023-12-20 17:51:51,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306219330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:51:51,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:51:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:51:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568941832] [2023-12-20 17:51:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:51:51,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:51:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:51:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:51:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:51:51,016 INFO L87 Difference]: Start difference. First operand 6012 states and 10044 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:51:56,580 INFO L93 Difference]: Finished difference Result 17597 states and 29554 transitions. [2023-12-20 17:51:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:51:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-12-20 17:51:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:51:56,609 INFO L225 Difference]: With dead ends: 17597 [2023-12-20 17:51:56,609 INFO L226 Difference]: Without dead ends: 11586 [2023-12-20 17:51:56,614 INFO L412 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 [2023-12-20 17:51:56,615 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4336 mSolverCounterSat, 1470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 4336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:51:56,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1716 Invalid, 5806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1470 Valid, 4336 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 17:51:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2023-12-20 17:51:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11551. [2023-12-20 17:51:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11550 states have (on average 1.4577489177489178) internal successors, (16837), 11550 states have internal predecessors, (16837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 16837 transitions. [2023-12-20 17:51:56,758 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 16837 transitions. Word has length 114 [2023-12-20 17:51:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:51:56,759 INFO L495 AbstractCegarLoop]: Abstraction has 11551 states and 16837 transitions. [2023-12-20 17:51:56,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:51:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 16837 transitions. [2023-12-20 17:51:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 17:51:56,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:51:56,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:51:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:51:56,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:51:56,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:51:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -473664555, now seen corresponding path program 1 times [2023-12-20 17:51:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:51:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186880865] [2023-12-20 17:51:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:51:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:51:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:51:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:51:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:51:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186880865] [2023-12-20 17:51:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186880865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:51:56,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:51:56,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:51:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626814861] [2023-12-20 17:51:56,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:51:56,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:51:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:51:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:51:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:51:56,909 INFO L87 Difference]: Start difference. First operand 11551 states and 16837 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:03,466 INFO L93 Difference]: Finished difference Result 34261 states and 50006 transitions. [2023-12-20 17:52:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:52:03,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-12-20 17:52:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:03,517 INFO L225 Difference]: With dead ends: 34261 [2023-12-20 17:52:03,517 INFO L226 Difference]: Without dead ends: 22711 [2023-12-20 17:52:03,536 INFO L412 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 [2023-12-20 17:52:03,538 INFO L413 NwaCegarLoop]: 1848 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:03,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 2121 Invalid, 5746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4316 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-20 17:52:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2023-12-20 17:52:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 22686. [2023-12-20 17:52:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22686 states, 22685 states have (on average 1.281948424068768) internal successors, (29081), 22685 states have internal predecessors, (29081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22686 states to 22686 states and 29081 transitions. [2023-12-20 17:52:04,104 INFO L78 Accepts]: Start accepts. Automaton has 22686 states and 29081 transitions. Word has length 140 [2023-12-20 17:52:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:04,105 INFO L495 AbstractCegarLoop]: Abstraction has 22686 states and 29081 transitions. [2023-12-20 17:52:04,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 22686 states and 29081 transitions. [2023-12-20 17:52:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-20 17:52:04,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:04,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:52:04,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:52:04,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:04,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 228585421, now seen corresponding path program 1 times [2023-12-20 17:52:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:04,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983083144] [2023-12-20 17:52:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 17:52:05,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983083144] [2023-12-20 17:52:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983083144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:52:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:52:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502270366] [2023-12-20 17:52:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:05,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:52:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:52:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:52:05,063 INFO L87 Difference]: Start difference. First operand 22686 states and 29081 transitions. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:12,723 INFO L93 Difference]: Finished difference Result 57743 states and 72060 transitions. [2023-12-20 17:52:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:52:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2023-12-20 17:52:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:12,790 INFO L225 Difference]: With dead ends: 57743 [2023-12-20 17:52:12,791 INFO L226 Difference]: Without dead ends: 35058 [2023-12-20 17:52:12,816 INFO L412 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 [2023-12-20 17:52:12,817 INFO L413 NwaCegarLoop]: 1789 mSDtfsCounter, 3752 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 9617 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 9789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 9617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:12,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 2146 Invalid, 9789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 9617 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-20 17:52:12,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35058 states. [2023-12-20 17:52:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35058 to 33648. [2023-12-20 17:52:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33648 states, 33647 states have (on average 1.2262608850714773) internal successors, (41260), 33647 states have internal predecessors, (41260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33648 states to 33648 states and 41260 transitions. [2023-12-20 17:52:13,382 INFO L78 Accepts]: Start accepts. Automaton has 33648 states and 41260 transitions. Word has length 422 [2023-12-20 17:52:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:13,382 INFO L495 AbstractCegarLoop]: Abstraction has 33648 states and 41260 transitions. [2023-12-20 17:52:13,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 33648 states and 41260 transitions. [2023-12-20 17:52:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-20 17:52:13,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:13,391 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:52:13,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:52:13,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:13,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1461392512, now seen corresponding path program 1 times [2023-12-20 17:52:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370921996] [2023-12-20 17:52:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-20 17:52:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:14,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370921996] [2023-12-20 17:52:14,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370921996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:14,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:52:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:52:14,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811938437] [2023-12-20 17:52:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:14,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:52:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:52:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:52:14,347 INFO L87 Difference]: Start difference. First operand 33648 states and 41260 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:22,982 INFO L93 Difference]: Finished difference Result 90599 states and 108577 transitions. [2023-12-20 17:52:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:52:22,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 629 [2023-12-20 17:52:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:23,080 INFO L225 Difference]: With dead ends: 90599 [2023-12-20 17:52:23,081 INFO L226 Difference]: Without dead ends: 56952 [2023-12-20 17:52:23,114 INFO L412 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 [2023-12-20 17:52:23,114 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 3757 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 9615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 9353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:23,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2099 Invalid, 9615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [262 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-20 17:52:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56952 states. [2023-12-20 17:52:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56952 to 52813. [2023-12-20 17:52:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52813 states, 52812 states have (on average 1.1742028326895402) internal successors, (62012), 52812 states have internal predecessors, (62012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52813 states to 52813 states and 62012 transitions. [2023-12-20 17:52:23,668 INFO L78 Accepts]: Start accepts. Automaton has 52813 states and 62012 transitions. Word has length 629 [2023-12-20 17:52:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:23,668 INFO L495 AbstractCegarLoop]: Abstraction has 52813 states and 62012 transitions. [2023-12-20 17:52:23,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 52813 states and 62012 transitions. [2023-12-20 17:52:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-12-20 17:52:23,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:23,676 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:52:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:52:23,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:23,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2042228198, now seen corresponding path program 1 times [2023-12-20 17:52:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170532692] [2023-12-20 17:52:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-20 17:52:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170532692] [2023-12-20 17:52:24,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170532692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:24,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:52:24,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:52:24,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057870843] [2023-12-20 17:52:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:24,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:52:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:52:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:52:24,752 INFO L87 Difference]: Start difference. First operand 52813 states and 62012 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:31,103 INFO L93 Difference]: Finished difference Result 108386 states and 126802 transitions. [2023-12-20 17:52:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:52:31,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 657 [2023-12-20 17:52:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:31,168 INFO L225 Difference]: With dead ends: 108386 [2023-12-20 17:52:31,168 INFO L226 Difference]: Without dead ends: 55543 [2023-12-20 17:52:31,204 INFO L412 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 [2023-12-20 17:52:31,205 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1138 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 7322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 7330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:31,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2107 Invalid, 7330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7322 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 17:52:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55543 states. [2023-12-20 17:52:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55543 to 55543. [2023-12-20 17:52:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55543 states, 55542 states have (on average 1.1657304382269273) internal successors, (64747), 55542 states have internal predecessors, (64747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 64747 transitions. [2023-12-20 17:52:31,699 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 64747 transitions. Word has length 657 [2023-12-20 17:52:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:31,699 INFO L495 AbstractCegarLoop]: Abstraction has 55543 states and 64747 transitions. [2023-12-20 17:52:31,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 64747 transitions. [2023-12-20 17:52:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-20 17:52:31,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:31,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:52:31,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:52:31,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:31,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1690657565, now seen corresponding path program 1 times [2023-12-20 17:52:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717836066] [2023-12-20 17:52:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-20 17:52:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717836066] [2023-12-20 17:52:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717836066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:32,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:52:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:52:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678455050] [2023-12-20 17:52:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:52:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:52:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:52:32,573 INFO L87 Difference]: Start difference. First operand 55543 states and 64747 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:39,200 INFO L93 Difference]: Finished difference Result 128985 states and 152609 transitions. [2023-12-20 17:52:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:52:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 742 [2023-12-20 17:52:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:39,293 INFO L225 Difference]: With dead ends: 128985 [2023-12-20 17:52:39,294 INFO L226 Difference]: Without dead ends: 76173 [2023-12-20 17:52:39,321 INFO L412 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 [2023-12-20 17:52:39,322 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 1432 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 5116 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 6086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 5116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:39,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 3387 Invalid, 6086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 5116 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-20 17:52:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76173 states. [2023-12-20 17:52:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76173 to 76080. [2023-12-20 17:52:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76080 states, 76079 states have (on average 1.1458878271270654) internal successors, (87178), 76079 states have internal predecessors, (87178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76080 states to 76080 states and 87178 transitions. [2023-12-20 17:52:40,327 INFO L78 Accepts]: Start accepts. Automaton has 76080 states and 87178 transitions. Word has length 742 [2023-12-20 17:52:40,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:40,328 INFO L495 AbstractCegarLoop]: Abstraction has 76080 states and 87178 transitions. [2023-12-20 17:52:40,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 76080 states and 87178 transitions. [2023-12-20 17:52:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 17:52:40,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:40,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:52:40,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:52:40,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:40,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1203167450, now seen corresponding path program 1 times [2023-12-20 17:52:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:40,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862175334] [2023-12-20 17:52:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 83 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:52:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862175334] [2023-12-20 17:52:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862175334] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:52:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351867419] [2023-12-20 17:52:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:42,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:52:42,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:52:42,168 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) [2023-12-20 17:52:42,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:52:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:42,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:52:42,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:52:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-20 17:52:42,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:52:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351867419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:42,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:52:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:52:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336770356] [2023-12-20 17:52:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:42,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:52:42,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:52:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:52:42,504 INFO L87 Difference]: Start difference. First operand 76080 states and 87178 transitions. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:48,608 INFO L93 Difference]: Finished difference Result 174159 states and 201760 transitions. [2023-12-20 17:52:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:52:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 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 749 [2023-12-20 17:52:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:48,745 INFO L225 Difference]: With dead ends: 174159 [2023-12-20 17:52:48,746 INFO L226 Difference]: Without dead ends: 100810 [2023-12-20 17:52:48,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:52:48,770 INFO L413 NwaCegarLoop]: 3108 mSDtfsCounter, 1441 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5025 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 6027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 5025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:48,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 3282 Invalid, 6027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 5025 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 17:52:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100810 states. [2023-12-20 17:52:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100810 to 99301. [2023-12-20 17:52:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99301 states, 99300 states have (on average 1.133766364551863) internal successors, (112583), 99300 states have internal predecessors, (112583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99301 states to 99301 states and 112583 transitions. [2023-12-20 17:52:49,855 INFO L78 Accepts]: Start accepts. Automaton has 99301 states and 112583 transitions. Word has length 749 [2023-12-20 17:52:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:49,855 INFO L495 AbstractCegarLoop]: Abstraction has 99301 states and 112583 transitions. [2023-12-20 17:52:49,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 99301 states and 112583 transitions. [2023-12-20 17:52:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2023-12-20 17:52:49,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:49,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:52:49,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 17:52:50,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 17:52:50,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:50,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:50,070 INFO L85 PathProgramCache]: Analyzing trace with hash -495404019, now seen corresponding path program 1 times [2023-12-20 17:52:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139595015] [2023-12-20 17:52:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-12-20 17:52:50,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:50,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139595015] [2023-12-20 17:52:50,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139595015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:50,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:52:50,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:52:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713978501] [2023-12-20 17:52:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:50,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:52:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:52:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:52:50,941 INFO L87 Difference]: Start difference. First operand 99301 states and 112583 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 2 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:52:56,815 INFO L93 Difference]: Finished difference Result 239576 states and 275839 transitions. [2023-12-20 17:52:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:52:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 2 states have internal predecessors, (533), 0 states have call successors, (0), 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 891 [2023-12-20 17:52:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:52:56,990 INFO L225 Difference]: With dead ends: 239576 [2023-12-20 17:52:56,990 INFO L226 Difference]: Without dead ends: 143006 [2023-12-20 17:52:57,029 INFO L412 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 [2023-12-20 17:52:57,030 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 1359 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3940 mSolverCounterSat, 2308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2308 IncrementalHoareTripleChecker+Valid, 3940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:52:57,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 827 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2308 Valid, 3940 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:52:57,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143006 states. [2023-12-20 17:52:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143006 to 142979. [2023-12-20 17:52:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142979 states, 142978 states have (on average 1.1457217194253662) internal successors, (163813), 142978 states have internal predecessors, (163813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142979 states to 142979 states and 163813 transitions. [2023-12-20 17:52:58,964 INFO L78 Accepts]: Start accepts. Automaton has 142979 states and 163813 transitions. Word has length 891 [2023-12-20 17:52:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:52:58,965 INFO L495 AbstractCegarLoop]: Abstraction has 142979 states and 163813 transitions. [2023-12-20 17:52:58,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 2 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:52:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 142979 states and 163813 transitions. [2023-12-20 17:52:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2023-12-20 17:52:58,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:52:58,997 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:52:58,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:52:58,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:52:58,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:52:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash -886943747, now seen corresponding path program 1 times [2023-12-20 17:52:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:52:58,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034251878] [2023-12-20 17:52:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:52:58,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:52:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:52:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-12-20 17:52:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:52:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034251878] [2023-12-20 17:52:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034251878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:52:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:52:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:52:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008993625] [2023-12-20 17:52:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:52:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:52:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:52:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:52:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:52:59,932 INFO L87 Difference]: Start difference. First operand 142979 states and 163813 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:53:11,164 INFO L93 Difference]: Finished difference Result 444637 states and 516533 transitions. [2023-12-20 17:53:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:53:11,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 950 [2023-12-20 17:53:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:53:11,706 INFO L225 Difference]: With dead ends: 444637 [2023-12-20 17:53:11,706 INFO L226 Difference]: Without dead ends: 304389 [2023-12-20 17:53:11,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:53:11,793 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 3312 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 8768 mSolverCounterSat, 2796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 11564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2796 IncrementalHoareTripleChecker+Valid, 8768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:53:11,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3312 Valid, 1442 Invalid, 11564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2796 Valid, 8768 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-20 17:53:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304389 states. [2023-12-20 17:53:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304389 to 293284. [2023-12-20 17:53:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293284 states, 293283 states have (on average 1.1417129530180747) internal successors, (334845), 293283 states have internal predecessors, (334845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293284 states to 293284 states and 334845 transitions. [2023-12-20 17:53:15,762 INFO L78 Accepts]: Start accepts. Automaton has 293284 states and 334845 transitions. Word has length 950 [2023-12-20 17:53:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:53:15,763 INFO L495 AbstractCegarLoop]: Abstraction has 293284 states and 334845 transitions. [2023-12-20 17:53:15,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 293284 states and 334845 transitions. [2023-12-20 17:53:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2023-12-20 17:53:15,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:53:15,774 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:53:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:53:15,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:53:15,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:53:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash 785266501, now seen corresponding path program 1 times [2023-12-20 17:53:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:53:15,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256354087] [2023-12-20 17:53:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:53:15,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:53:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:53:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-20 17:53:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:53:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256354087] [2023-12-20 17:53:16,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256354087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:53:16,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:53:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:53:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767569489] [2023-12-20 17:53:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:53:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:53:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:53:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:53:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:53:16,491 INFO L87 Difference]: Start difference. First operand 293284 states and 334845 transitions. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:53:23,216 INFO L93 Difference]: Finished difference Result 683497 states and 782525 transitions. [2023-12-20 17:53:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:53:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 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 1011 [2023-12-20 17:53:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:53:24,212 INFO L225 Difference]: With dead ends: 683497 [2023-12-20 17:53:24,212 INFO L226 Difference]: Without dead ends: 390213 [2023-12-20 17:53:24,349 INFO L412 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 [2023-12-20 17:53:24,350 INFO L413 NwaCegarLoop]: 3069 mSDtfsCounter, 1391 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 3730 mSolverCounterSat, 1646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 5376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1646 IncrementalHoareTripleChecker+Valid, 3730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:53:24,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 3254 Invalid, 5376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1646 Valid, 3730 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 17:53:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390213 states. [2023-12-20 17:53:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390213 to 386099. [2023-12-20 17:53:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386099 states, 386098 states have (on average 1.1167320214038923) internal successors, (431168), 386098 states have internal predecessors, (431168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386099 states to 386099 states and 431168 transitions. [2023-12-20 17:53:29,563 INFO L78 Accepts]: Start accepts. Automaton has 386099 states and 431168 transitions. Word has length 1011 [2023-12-20 17:53:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:53:29,563 INFO L495 AbstractCegarLoop]: Abstraction has 386099 states and 431168 transitions. [2023-12-20 17:53:29,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 386099 states and 431168 transitions. [2023-12-20 17:53:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2023-12-20 17:53:29,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:53:29,591 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:53:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:53:29,593 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:53:29,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:53:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1571868098, now seen corresponding path program 1 times [2023-12-20 17:53:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:53:29,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909697239] [2023-12-20 17:53:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:53:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:53:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:53:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 613 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-20 17:53:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:53:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909697239] [2023-12-20 17:53:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909697239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:53:30,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:53:30,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:53:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691020550] [2023-12-20 17:53:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:53:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:53:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:53:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:53:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:53:30,399 INFO L87 Difference]: Start difference. First operand 386099 states and 431168 transitions. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:53:38,537 INFO L93 Difference]: Finished difference Result 873219 states and 978252 transitions. [2023-12-20 17:53:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:53:38,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 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 1026 [2023-12-20 17:53:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:53:39,560 INFO L225 Difference]: With dead ends: 873219 [2023-12-20 17:53:39,561 INFO L226 Difference]: Without dead ends: 472104 [2023-12-20 17:53:39,799 INFO L412 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 [2023-12-20 17:53:39,799 INFO L413 NwaCegarLoop]: 3015 mSDtfsCounter, 1327 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4407 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 5414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 4407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:53:39,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 3201 Invalid, 5414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1007 Valid, 4407 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 17:53:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472104 states. [2023-12-20 17:53:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472104 to 470696. [2023-12-20 17:53:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470696 states, 470695 states have (on average 1.10199173562498) internal successors, (518702), 470695 states have internal predecessors, (518702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470696 states to 470696 states and 518702 transitions. [2023-12-20 17:53:47,539 INFO L78 Accepts]: Start accepts. Automaton has 470696 states and 518702 transitions. Word has length 1026 [2023-12-20 17:53:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:53:47,540 INFO L495 AbstractCegarLoop]: Abstraction has 470696 states and 518702 transitions. [2023-12-20 17:53:47,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 470696 states and 518702 transitions. [2023-12-20 17:53:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2023-12-20 17:53:47,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:53:47,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:53:47,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:53:47,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:53:47,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:53:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 729188100, now seen corresponding path program 1 times [2023-12-20 17:53:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:53:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038788742] [2023-12-20 17:53:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:53:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:53:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:53:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 106 proven. 463 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:53:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:53:48,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038788742] [2023-12-20 17:53:48,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038788742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:53:48,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247620367] [2023-12-20 17:53:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:53:48,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:53:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:53:48,850 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) [2023-12-20 17:53:48,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:53:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:53:49,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:53:49,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:53:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:53:49,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:53:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247620367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:53:49,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:53:49,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 17:53:49,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195431812] [2023-12-20 17:53:49,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:53:49,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:53:49,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:53:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:53:49,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:53:49,579 INFO L87 Difference]: Start difference. First operand 470696 states and 518702 transitions. Second operand has 3 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:53:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:53:57,320 INFO L93 Difference]: Finished difference Result 1024808 states and 1132318 transitions. [2023-12-20 17:53:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:53:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 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 1030 [2023-12-20 17:53:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:53:58,505 INFO L225 Difference]: With dead ends: 1024808 [2023-12-20 17:53:58,505 INFO L226 Difference]: Without dead ends: 556843 [2023-12-20 17:53:58,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:53:58,753 INFO L413 NwaCegarLoop]: 2981 mSDtfsCounter, 1007 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 5274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:53:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 3153 Invalid, 5274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 4113 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:53:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556843 states. [2023-12-20 17:54:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556843 to 545776. [2023-12-20 17:54:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545776 states, 545775 states have (on average 1.1014813796894325) internal successors, (601161), 545775 states have internal predecessors, (601161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:54:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545776 states to 545776 states and 601161 transitions. [2023-12-20 17:54:06,469 INFO L78 Accepts]: Start accepts. Automaton has 545776 states and 601161 transitions. Word has length 1030 [2023-12-20 17:54:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:54:06,470 INFO L495 AbstractCegarLoop]: Abstraction has 545776 states and 601161 transitions. [2023-12-20 17:54:06,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:54:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 545776 states and 601161 transitions. [2023-12-20 17:54:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2023-12-20 17:54:06,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:54:06,516 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:54:06,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 17:54:06,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 17:54:06,722 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:54:06,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:54:06,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1323855339, now seen corresponding path program 1 times [2023-12-20 17:54:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:54:06,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703216728] [2023-12-20 17:54:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:54:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:54:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:54:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 1035 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2023-12-20 17:54:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:54:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703216728] [2023-12-20 17:54:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703216728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:54:08,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:54:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:54:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774031405] [2023-12-20 17:54:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:54:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:54:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:54:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:54:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:54:08,020 INFO L87 Difference]: Start difference. First operand 545776 states and 601161 transitions. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:54:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:54:20,912 INFO L93 Difference]: Finished difference Result 1518802 states and 1696092 transitions. [2023-12-20 17:54:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:54:20,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 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 1116 [2023-12-20 17:54:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:54:22,585 INFO L225 Difference]: With dead ends: 1518802 [2023-12-20 17:54:22,585 INFO L226 Difference]: Without dead ends: 975757 [2023-12-20 17:54:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:54:23,195 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 4997 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 6099 mSolverCounterSat, 3980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 10079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3980 IncrementalHoareTripleChecker+Valid, 6099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:54:23,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 938 Invalid, 10079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3980 Valid, 6099 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-20 17:54:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975757 states. [2023-12-20 17:54:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975757 to 966181. [2023-12-20 17:54:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966181 states, 966180 states have (on average 1.090468649734004) internal successors, (1053589), 966180 states have internal predecessors, (1053589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:54:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966181 states to 966181 states and 1053589 transitions. [2023-12-20 17:54:37,351 INFO L78 Accepts]: Start accepts. Automaton has 966181 states and 1053589 transitions. Word has length 1116 [2023-12-20 17:54:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:54:37,352 INFO L495 AbstractCegarLoop]: Abstraction has 966181 states and 1053589 transitions. [2023-12-20 17:54:37,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:54:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 966181 states and 1053589 transitions. [2023-12-20 17:54:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2023-12-20 17:54:37,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:54:37,375 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:54:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:54:37,375 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:54:37,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:54:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash 212126598, now seen corresponding path program 1 times [2023-12-20 17:54:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:54:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992605735] [2023-12-20 17:54:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:54:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:54:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:54:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 789 proven. 218 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-20 17:54:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:54:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992605735] [2023-12-20 17:54:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992605735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:54:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799781032] [2023-12-20 17:54:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:54:39,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:54:39,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:54:39,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:54:39,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:54:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:54:39,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:54:40,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:54:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2023-12-20 17:54:40,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:54:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799781032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:54:40,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:54:40,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:54:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21194667] [2023-12-20 17:54:40,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:54:40,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:54:40,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:54:40,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:54:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:54:40,073 INFO L87 Difference]: Start difference. First operand 966181 states and 1053589 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)