/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:23:51,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:23:51,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:23:51,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:23:51,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:23:51,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:23:51,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:23:51,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:23:51,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:23:51,510 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:23:51,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:23:51,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:23:51,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:23:51,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:23:51,513 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:23:51,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:23:51,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:23:51,513 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:23:51,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:23:51,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:23:51,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:23:51,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:23:51,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:23:51,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:23:51,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:23:51,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:23:51,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:23:51,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:23:51,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:23:51,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:23:51,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:23:51,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:23:51,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:23:51,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:23:51,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:23:51,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:23:51,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:23:51,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:23:51,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:23:51,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:23:51,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:23:51,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:23:51,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:23:51,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:23:51,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:23:51,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:23:51,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:23:51,734 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:23:51,735 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:23:51,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2023-12-19 04:23:52,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:23:53,231 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:23:53,232 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2023-12-19 04:23:53,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638d6ae02/0ad5f132b5ba4a4a95a61c771373b2e1/FLAGeb3ab6fd8 [2023-12-19 04:23:53,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638d6ae02/0ad5f132b5ba4a4a95a61c771373b2e1 [2023-12-19 04:23:53,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:23:53,269 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:23:53,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:23:53,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:23:53,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:23:53,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:23:53" (1/1) ... [2023-12-19 04:23:53,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb235e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:53, skipping insertion in model container [2023-12-19 04:23:53,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:23:53" (1/1) ... [2023-12-19 04:23:53,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:23:53,533 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/Problem17_label00.c[7994,8007] [2023-12-19 04:23:53,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:23:53,918 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:23:53,936 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/Problem17_label00.c[7994,8007] [2023-12-19 04:23:54,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:23:54,115 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:23:54,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54 WrapperNode [2023-12-19 04:23:54,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:23:54,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:23:54,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:23:54,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:23:54,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,383 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:23:54,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:23:54,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:23:54,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:23:54,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:23:54,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,596 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]. [2023-12-19 04:23:54,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:23:54,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:23:54,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:23:54,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:23:54,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (1/1) ... [2023-12-19 04:23:54,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:23:54,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:23:54,773 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) [2023-12-19 04:23:54,782 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 [2023-12-19 04:23:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:23:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:23:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:23:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:23:54,843 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:23:54,844 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:23:57,274 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:23:57,307 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:23:57,307 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:23:57,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:23:57 BoogieIcfgContainer [2023-12-19 04:23:57,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:23:57,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:23:57,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:23:57,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:23:57,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:23:53" (1/3) ... [2023-12-19 04:23:57,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5697a361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:23:57, skipping insertion in model container [2023-12-19 04:23:57,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:23:54" (2/3) ... [2023-12-19 04:23:57,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5697a361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:23:57, skipping insertion in model container [2023-12-19 04:23:57,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:23:57" (3/3) ... [2023-12-19 04:23:57,313 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2023-12-19 04:23:57,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:23:57,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:23:57,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:23:57,367 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;@7b78b068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:23:57,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:23:57,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 04:23:57,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:23:57,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:23:57,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:23:57,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:23:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1866133670, now seen corresponding path program 1 times [2023-12-19 04:23:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:23:57,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379419728] [2023-12-19 04:23:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:23:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:23:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:23:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:23:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:23:57,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379419728] [2023-12-19 04:23:57,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379419728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:23:57,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:23:57,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:23:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432926345] [2023-12-19 04:23:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:23:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:23:57,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:23:57,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:23:57,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:23:57,556 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:23:57,605 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:23:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:23:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 04:23:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:23:57,615 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:23:57,615 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:23:57,618 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 [2023-12-19 04:23:57,620 INFO L413 NwaCegarLoop]: 935 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, 935 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 [2023-12-19 04:23:57,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:23:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:23:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:23:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:23:57,667 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 53 [2023-12-19 04:23:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:23:57,668 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:23:57,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:23:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 04:23:57,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:23:57,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:23:57,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:23:57,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:23:57,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:23:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash 184422738, now seen corresponding path program 1 times [2023-12-19 04:23:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:23:57,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319700637] [2023-12-19 04:23:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:23:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:23:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:23:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:23:57,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:23:57,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319700637] [2023-12-19 04:23:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319700637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:23:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:23:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:23:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815659741] [2023-12-19 04:23:57,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:23:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:23:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:23:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:23:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:23:57,805 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:59,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:23:59,728 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-12-19 04:23:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:23:59,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 04:23:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:23:59,733 INFO L225 Difference]: With dead ends: 1499 [2023-12-19 04:23:59,733 INFO L226 Difference]: Without dead ends: 974 [2023-12-19 04:23:59,735 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 [2023-12-19 04:23:59,736 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 420 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:23:59,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 04:23:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-19 04:23:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-12-19 04:23:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-12-19 04:23:59,759 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 53 [2023-12-19 04:23:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:23:59,759 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-12-19 04:23:59,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:23:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-12-19 04:23:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 04:23:59,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:23:59,762 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, 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] [2023-12-19 04:23:59,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:23:59,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:23:59,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:23:59,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1375403422, now seen corresponding path program 1 times [2023-12-19 04:23:59,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:23:59,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712632921] [2023-12-19 04:23:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:23:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:23:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:24:00,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712632921] [2023-12-19 04:24:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712632921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:00,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:00,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:00,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076782932] [2023-12-19 04:24:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:24:00,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:24:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:24:00,080 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:03,230 INFO L93 Difference]: Finished difference Result 3736 states and 5654 transitions. [2023-12-19 04:24:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:24:03,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-19 04:24:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:03,239 INFO L225 Difference]: With dead ends: 3736 [2023-12-19 04:24:03,239 INFO L226 Difference]: Without dead ends: 2766 [2023-12-19 04:24:03,241 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 [2023-12-19 04:24:03,242 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 908 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:03,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 268 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 04:24:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2023-12-19 04:24:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2723. [2023-12-19 04:24:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2722 states have (on average 1.3949301983835416) internal successors, (3797), 2722 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3797 transitions. [2023-12-19 04:24:03,280 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3797 transitions. Word has length 123 [2023-12-19 04:24:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:03,281 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3797 transitions. [2023-12-19 04:24:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3797 transitions. [2023-12-19 04:24:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 04:24:03,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:03,285 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, 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] [2023-12-19 04:24:03,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:24:03,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:03,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2133161281, now seen corresponding path program 1 times [2023-12-19 04:24:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:03,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981901368] [2023-12-19 04:24:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:03,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:24:03,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:03,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981901368] [2023-12-19 04:24:03,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981901368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:03,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:03,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:24:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159917916] [2023-12-19 04:24:03,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:03,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:03,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:03,449 INFO L87 Difference]: Start difference. First operand 2723 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:05,236 INFO L93 Difference]: Finished difference Result 8008 states and 11160 transitions. [2023-12-19 04:24:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:05,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-19 04:24:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:05,264 INFO L225 Difference]: With dead ends: 8008 [2023-12-19 04:24:05,265 INFO L226 Difference]: Without dead ends: 4427 [2023-12-19 04:24:05,270 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 [2023-12-19 04:24:05,284 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:05,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:24:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2023-12-19 04:24:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4427. [2023-12-19 04:24:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 1.2071848169905106) internal successors, (5343), 4426 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 5343 transitions. [2023-12-19 04:24:05,391 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 5343 transitions. Word has length 145 [2023-12-19 04:24:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:05,391 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 5343 transitions. [2023-12-19 04:24:05,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 5343 transitions. [2023-12-19 04:24:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-19 04:24:05,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:05,394 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:05,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:24:05,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:05,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -437070539, now seen corresponding path program 1 times [2023-12-19 04:24:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557948704] [2023-12-19 04:24:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:24:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557948704] [2023-12-19 04:24:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557948704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:05,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:05,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112191662] [2023-12-19 04:24:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:05,656 INFO L87 Difference]: Start difference. First operand 4427 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:07,440 INFO L93 Difference]: Finished difference Result 10988 states and 13619 transitions. [2023-12-19 04:24:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2023-12-19 04:24:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:07,463 INFO L225 Difference]: With dead ends: 10988 [2023-12-19 04:24:07,463 INFO L226 Difference]: Without dead ends: 6562 [2023-12-19 04:24:07,466 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 [2023-12-19 04:24:07,471 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:07,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 798 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:24:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2023-12-19 04:24:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6562. [2023-12-19 04:24:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6562 states, 6561 states have (on average 1.2025605852766346) internal successors, (7890), 6561 states have internal predecessors, (7890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 7890 transitions. [2023-12-19 04:24:07,583 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 7890 transitions. Word has length 205 [2023-12-19 04:24:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:07,583 INFO L495 AbstractCegarLoop]: Abstraction has 6562 states and 7890 transitions. [2023-12-19 04:24:07,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 7890 transitions. [2023-12-19 04:24:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-19 04:24:07,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:07,586 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:07,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:24:07,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:07,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash -470195344, now seen corresponding path program 1 times [2023-12-19 04:24:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:07,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283829492] [2023-12-19 04:24:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 04:24:07,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283829492] [2023-12-19 04:24:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283829492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:07,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100590317] [2023-12-19 04:24:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:07,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:07,734 INFO L87 Difference]: Start difference. First operand 6562 states and 7890 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:09,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:09,450 INFO L93 Difference]: Finished difference Result 16520 states and 20209 transitions. [2023-12-19 04:24:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:09,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 207 [2023-12-19 04:24:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:09,483 INFO L225 Difference]: With dead ends: 16520 [2023-12-19 04:24:09,484 INFO L226 Difference]: Without dead ends: 9959 [2023-12-19 04:24:09,498 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 [2023-12-19 04:24:09,499 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 399 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:09,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 484 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:24:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9959 states. [2023-12-19 04:24:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9959 to 6960. [2023-12-19 04:24:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 6959 states have (on average 1.1939933898548643) internal successors, (8309), 6959 states have internal predecessors, (8309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 8309 transitions. [2023-12-19 04:24:09,604 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 8309 transitions. Word has length 207 [2023-12-19 04:24:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:09,606 INFO L495 AbstractCegarLoop]: Abstraction has 6960 states and 8309 transitions. [2023-12-19 04:24:09,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:09,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 8309 transitions. [2023-12-19 04:24:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-19 04:24:09,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:09,608 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:09,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:24:09,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:09,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1668185292, now seen corresponding path program 1 times [2023-12-19 04:24:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:09,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138420552] [2023-12-19 04:24:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:09,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:24:09,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138420552] [2023-12-19 04:24:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138420552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:09,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478437234] [2023-12-19 04:24:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:09,725 INFO L87 Difference]: Start difference. First operand 6960 states and 8309 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:11,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:11,449 INFO L93 Difference]: Finished difference Result 17323 states and 21058 transitions. [2023-12-19 04:24:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:11,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-12-19 04:24:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:11,490 INFO L225 Difference]: With dead ends: 17323 [2023-12-19 04:24:11,490 INFO L226 Difference]: Without dead ends: 10364 [2023-12-19 04:24:11,495 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 [2023-12-19 04:24:11,497 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 423 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:11,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 450 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:24:11,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2023-12-19 04:24:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 9508. [2023-12-19 04:24:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 9507 states have (on average 1.1959608709372043) internal successors, (11370), 9507 states have internal predecessors, (11370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 11370 transitions. [2023-12-19 04:24:11,627 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 11370 transitions. Word has length 220 [2023-12-19 04:24:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:11,627 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 11370 transitions. [2023-12-19 04:24:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 11370 transitions. [2023-12-19 04:24:11,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-19 04:24:11,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:11,630 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:11,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:24:11,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:11,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1774281270, now seen corresponding path program 1 times [2023-12-19 04:24:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041823820] [2023-12-19 04:24:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:24:11,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:11,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041823820] [2023-12-19 04:24:11,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041823820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:11,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:11,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702873286] [2023-12-19 04:24:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:11,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:11,730 INFO L87 Difference]: Start difference. First operand 9508 states and 11370 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:13,516 INFO L93 Difference]: Finished difference Result 25398 states and 30226 transitions. [2023-12-19 04:24:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 252 [2023-12-19 04:24:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:13,540 INFO L225 Difference]: With dead ends: 25398 [2023-12-19 04:24:13,540 INFO L226 Difference]: Without dead ends: 15891 [2023-12-19 04:24:13,550 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 [2023-12-19 04:24:13,551 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 484 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:13,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 280 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:24:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15891 states. [2023-12-19 04:24:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15891 to 14183. [2023-12-19 04:24:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14183 states, 14182 states have (on average 1.1846001974333662) internal successors, (16800), 14182 states have internal predecessors, (16800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14183 states to 14183 states and 16800 transitions. [2023-12-19 04:24:13,839 INFO L78 Accepts]: Start accepts. Automaton has 14183 states and 16800 transitions. Word has length 252 [2023-12-19 04:24:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:13,839 INFO L495 AbstractCegarLoop]: Abstraction has 14183 states and 16800 transitions. [2023-12-19 04:24:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 14183 states and 16800 transitions. [2023-12-19 04:24:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-19 04:24:13,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:13,843 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:13,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:24:13,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:13,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1927600320, now seen corresponding path program 1 times [2023-12-19 04:24:13,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:13,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563370736] [2023-12-19 04:24:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:24:14,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563370736] [2023-12-19 04:24:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563370736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:14,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:14,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555839172] [2023-12-19 04:24:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:14,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:14,082 INFO L87 Difference]: Start difference. First operand 14183 states and 16800 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:16,051 INFO L93 Difference]: Finished difference Result 33920 states and 40605 transitions. [2023-12-19 04:24:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:16,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 269 [2023-12-19 04:24:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:16,084 INFO L225 Difference]: With dead ends: 33920 [2023-12-19 04:24:16,085 INFO L226 Difference]: Without dead ends: 19738 [2023-12-19 04:24:16,102 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 [2023-12-19 04:24:16,105 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 454 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:16,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 452 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:24:16,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19738 states. [2023-12-19 04:24:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19738 to 18028. [2023-12-19 04:24:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 1.2058578798468964) internal successors, (21738), 18027 states have internal predecessors, (21738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 21738 transitions. [2023-12-19 04:24:16,311 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 21738 transitions. Word has length 269 [2023-12-19 04:24:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:16,311 INFO L495 AbstractCegarLoop]: Abstraction has 18028 states and 21738 transitions. [2023-12-19 04:24:16,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 21738 transitions. [2023-12-19 04:24:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-19 04:24:16,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:16,319 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:16,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:24:16,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:16,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1992306372, now seen corresponding path program 1 times [2023-12-19 04:24:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330170932] [2023-12-19 04:24:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 04:24:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330170932] [2023-12-19 04:24:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330170932] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:24:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159109119] [2023-12-19 04:24:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:16,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:24:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:24:16,624 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) [2023-12-19 04:24:16,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:24:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:16,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:24:16,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:24:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 04:24:16,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:24:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 04:24:17,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159109119] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:24:17,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:24:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-19 04:24:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938908580] [2023-12-19 04:24:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:17,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:24:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:24:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:24:17,106 INFO L87 Difference]: Start difference. First operand 18028 states and 21738 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:20,242 INFO L93 Difference]: Finished difference Result 49691 states and 60241 transitions. [2023-12-19 04:24:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:24:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 277 [2023-12-19 04:24:20,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:20,281 INFO L225 Difference]: With dead ends: 49691 [2023-12-19 04:24:20,281 INFO L226 Difference]: Without dead ends: 30793 [2023-12-19 04:24:20,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:24:20,302 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1069 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:20,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 137 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:24:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30793 states. [2023-12-19 04:24:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30793 to 30366. [2023-12-19 04:24:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30366 states, 30365 states have (on average 1.1689445084801582) internal successors, (35495), 30365 states have internal predecessors, (35495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30366 states to 30366 states and 35495 transitions. [2023-12-19 04:24:20,937 INFO L78 Accepts]: Start accepts. Automaton has 30366 states and 35495 transitions. Word has length 277 [2023-12-19 04:24:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:20,938 INFO L495 AbstractCegarLoop]: Abstraction has 30366 states and 35495 transitions. [2023-12-19 04:24:20,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 30366 states and 35495 transitions. [2023-12-19 04:24:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-12-19 04:24:20,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:20,942 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:20,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 04:24:21,148 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 [2023-12-19 04:24:21,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:21,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash -547710925, now seen corresponding path program 1 times [2023-12-19 04:24:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196549844] [2023-12-19 04:24:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:24:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196549844] [2023-12-19 04:24:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196549844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:21,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159426889] [2023-12-19 04:24:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:21,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:21,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:21,369 INFO L87 Difference]: Start difference. First operand 30366 states and 35495 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:23,490 INFO L93 Difference]: Finished difference Result 76488 states and 89022 transitions. [2023-12-19 04:24:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:23,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 285 [2023-12-19 04:24:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:23,537 INFO L225 Difference]: With dead ends: 76488 [2023-12-19 04:24:23,537 INFO L226 Difference]: Without dead ends: 44415 [2023-12-19 04:24:23,560 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 [2023-12-19 04:24:23,561 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 482 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:23,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 608 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 04:24:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44415 states. [2023-12-19 04:24:24,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44415 to 39724. [2023-12-19 04:24:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39724 states, 39723 states have (on average 1.144299272461798) internal successors, (45455), 39723 states have internal predecessors, (45455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39724 states to 39724 states and 45455 transitions. [2023-12-19 04:24:24,283 INFO L78 Accepts]: Start accepts. Automaton has 39724 states and 45455 transitions. Word has length 285 [2023-12-19 04:24:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:24,283 INFO L495 AbstractCegarLoop]: Abstraction has 39724 states and 45455 transitions. [2023-12-19 04:24:24,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 39724 states and 45455 transitions. [2023-12-19 04:24:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-19 04:24:24,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:24,287 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:24,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:24:24,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:24,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1307338848, now seen corresponding path program 1 times [2023-12-19 04:24:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993403104] [2023-12-19 04:24:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:24:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:24,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993403104] [2023-12-19 04:24:24,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993403104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:24,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:24,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672780140] [2023-12-19 04:24:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:24,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:24,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:24,642 INFO L87 Difference]: Start difference. First operand 39724 states and 45455 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:26,188 INFO L93 Difference]: Finished difference Result 84967 states and 97498 transitions. [2023-12-19 04:24:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:26,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 290 [2023-12-19 04:24:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:26,241 INFO L225 Difference]: With dead ends: 84967 [2023-12-19 04:24:26,241 INFO L226 Difference]: Without dead ends: 45244 [2023-12-19 04:24:26,265 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 [2023-12-19 04:24:26,266 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 372 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:26,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 823 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:24:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45244 states. [2023-12-19 04:24:26,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45244 to 44819. [2023-12-19 04:24:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44819 states, 44818 states have (on average 1.1323129099915212) internal successors, (50748), 44818 states have internal predecessors, (50748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44819 states to 44819 states and 50748 transitions. [2023-12-19 04:24:26,855 INFO L78 Accepts]: Start accepts. Automaton has 44819 states and 50748 transitions. Word has length 290 [2023-12-19 04:24:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:26,855 INFO L495 AbstractCegarLoop]: Abstraction has 44819 states and 50748 transitions. [2023-12-19 04:24:26,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 44819 states and 50748 transitions. [2023-12-19 04:24:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-19 04:24:26,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:26,859 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, 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, 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] [2023-12-19 04:24:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:24:26,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:26,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash -891598437, now seen corresponding path program 1 times [2023-12-19 04:24:26,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:26,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623762162] [2023-12-19 04:24:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:24:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:27,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623762162] [2023-12-19 04:24:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623762162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:27,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:24:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504823190] [2023-12-19 04:24:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:24:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:27,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:24:27,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:24:27,201 INFO L87 Difference]: Start difference. First operand 44819 states and 50748 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:30,349 INFO L93 Difference]: Finished difference Result 117358 states and 132889 transitions. [2023-12-19 04:24:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:24:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2023-12-19 04:24:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:30,432 INFO L225 Difference]: With dead ends: 117358 [2023-12-19 04:24:30,432 INFO L226 Difference]: Without dead ends: 70839 [2023-12-19 04:24:30,462 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 [2023-12-19 04:24:30,462 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 843 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:30,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 321 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:24:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2023-12-19 04:24:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 69510. [2023-12-19 04:24:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69510 states, 69509 states have (on average 1.1229912673179012) internal successors, (78058), 69509 states have internal predecessors, (78058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69510 states to 69510 states and 78058 transitions. [2023-12-19 04:24:31,499 INFO L78 Accepts]: Start accepts. Automaton has 69510 states and 78058 transitions. Word has length 313 [2023-12-19 04:24:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 69510 states and 78058 transitions. [2023-12-19 04:24:31,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 69510 states and 78058 transitions. [2023-12-19 04:24:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-19 04:24:31,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:31,505 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, 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, 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] [2023-12-19 04:24:31,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:24:31,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:31,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1171549942, now seen corresponding path program 1 times [2023-12-19 04:24:31,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:31,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89698490] [2023-12-19 04:24:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:31,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 04:24:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89698490] [2023-12-19 04:24:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89698490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:31,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242272820] [2023-12-19 04:24:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:31,854 INFO L87 Difference]: Start difference. First operand 69510 states and 78058 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:33,640 INFO L93 Difference]: Finished difference Result 149690 states and 168125 transitions. [2023-12-19 04:24:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:33,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 328 [2023-12-19 04:24:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:33,742 INFO L225 Difference]: With dead ends: 149690 [2023-12-19 04:24:33,743 INFO L226 Difference]: Without dead ends: 80181 [2023-12-19 04:24:33,761 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 [2023-12-19 04:24:33,762 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 365 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:33,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 766 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:24:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80181 states. [2023-12-19 04:24:34,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80181 to 79318. [2023-12-19 04:24:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79318 states, 79317 states have (on average 1.1088795592369858) internal successors, (87953), 79317 states have internal predecessors, (87953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79318 states to 79318 states and 87953 transitions. [2023-12-19 04:24:34,875 INFO L78 Accepts]: Start accepts. Automaton has 79318 states and 87953 transitions. Word has length 328 [2023-12-19 04:24:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:34,875 INFO L495 AbstractCegarLoop]: Abstraction has 79318 states and 87953 transitions. [2023-12-19 04:24:34,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 79318 states and 87953 transitions. [2023-12-19 04:24:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-19 04:24:34,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:34,893 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, 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] [2023-12-19 04:24:34,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:24:34,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:34,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash -732796761, now seen corresponding path program 1 times [2023-12-19 04:24:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359553938] [2023-12-19 04:24:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:24:35,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359553938] [2023-12-19 04:24:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359553938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:24:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243781938] [2023-12-19 04:24:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:35,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:24:35,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:24:35,312 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) [2023-12-19 04:24:35,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:24:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:35,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:24:35,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:24:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:24:35,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:24:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:24:37,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243781938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:24:37,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:24:37,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-19 04:24:37,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339895832] [2023-12-19 04:24:37,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:24:37,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 04:24:37,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:37,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 04:24:37,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:24:37,070 INFO L87 Difference]: Start difference. First operand 79318 states and 87953 transitions. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:43,686 INFO L93 Difference]: Finished difference Result 195339 states and 215637 transitions. [2023-12-19 04:24:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 04:24:43,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 339 [2023-12-19 04:24:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:43,827 INFO L225 Difference]: With dead ends: 195339 [2023-12-19 04:24:43,827 INFO L226 Difference]: Without dead ends: 113464 [2023-12-19 04:24:43,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:24:43,872 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1845 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7475 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 8402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 7475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:43,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 278 Invalid, 8402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 7475 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 04:24:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113464 states. [2023-12-19 04:24:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113464 to 97182. [2023-12-19 04:24:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97182 states, 97181 states have (on average 1.0952861155987281) internal successors, (106441), 97181 states have internal predecessors, (106441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97182 states to 97182 states and 106441 transitions. [2023-12-19 04:24:45,332 INFO L78 Accepts]: Start accepts. Automaton has 97182 states and 106441 transitions. Word has length 339 [2023-12-19 04:24:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:45,332 INFO L495 AbstractCegarLoop]: Abstraction has 97182 states and 106441 transitions. [2023-12-19 04:24:45,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 97182 states and 106441 transitions. [2023-12-19 04:24:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-19 04:24:45,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:45,337 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:45,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:24:45,542 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 [2023-12-19 04:24:45,542 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:45,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1205068660, now seen corresponding path program 1 times [2023-12-19 04:24:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738617050] [2023-12-19 04:24:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:45,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-19 04:24:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738617050] [2023-12-19 04:24:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738617050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:45,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:24:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772823303] [2023-12-19 04:24:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:45,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:45,939 INFO L87 Difference]: Start difference. First operand 97182 states and 106441 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:47,662 INFO L93 Difference]: Finished difference Result 199050 states and 218122 transitions. [2023-12-19 04:24:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2023-12-19 04:24:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:47,792 INFO L225 Difference]: With dead ends: 199050 [2023-12-19 04:24:47,792 INFO L226 Difference]: Without dead ends: 102294 [2023-12-19 04:24:47,853 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 [2023-12-19 04:24:47,854 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 405 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:47,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 726 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:24:47,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102294 states. [2023-12-19 04:24:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102294 to 89927. [2023-12-19 04:24:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89927 states, 89926 states have (on average 1.0939661499455107) internal successors, (98376), 89926 states have internal predecessors, (98376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89927 states to 89927 states and 98376 transitions. [2023-12-19 04:24:49,186 INFO L78 Accepts]: Start accepts. Automaton has 89927 states and 98376 transitions. Word has length 381 [2023-12-19 04:24:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:49,187 INFO L495 AbstractCegarLoop]: Abstraction has 89927 states and 98376 transitions. [2023-12-19 04:24:49,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 89927 states and 98376 transitions. [2023-12-19 04:24:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-19 04:24:49,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:49,195 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:49,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:24:49,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:49,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash -366180776, now seen corresponding path program 1 times [2023-12-19 04:24:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:49,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724671128] [2023-12-19 04:24:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-19 04:24:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724671128] [2023-12-19 04:24:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724671128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:24:49,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:24:49,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:24:49,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030108427] [2023-12-19 04:24:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:24:49,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:24:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:24:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:24:49,528 INFO L87 Difference]: Start difference. First operand 89927 states and 98376 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:24:50,684 INFO L93 Difference]: Finished difference Result 177715 states and 194413 transitions. [2023-12-19 04:24:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:24:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 432 [2023-12-19 04:24:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:24:50,785 INFO L225 Difference]: With dead ends: 177715 [2023-12-19 04:24:50,785 INFO L226 Difference]: Without dead ends: 88213 [2023-12-19 04:24:50,824 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 [2023-12-19 04:24:50,825 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 616 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:24:50,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 93 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 04:24:50,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88213 states. [2023-12-19 04:24:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88213 to 88204. [2023-12-19 04:24:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88204 states, 88203 states have (on average 1.0933301588381348) internal successors, (96435), 88203 states have internal predecessors, (96435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88204 states to 88204 states and 96435 transitions. [2023-12-19 04:24:52,004 INFO L78 Accepts]: Start accepts. Automaton has 88204 states and 96435 transitions. Word has length 432 [2023-12-19 04:24:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:24:52,009 INFO L495 AbstractCegarLoop]: Abstraction has 88204 states and 96435 transitions. [2023-12-19 04:24:52,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:24:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 88204 states and 96435 transitions. [2023-12-19 04:24:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 04:24:52,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:24:52,019 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:24:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:24:52,019 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:24:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:24:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1053438296, now seen corresponding path program 1 times [2023-12-19 04:24:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:24:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383894036] [2023-12-19 04:24:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:24:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-19 04:24:53,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:24:53,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383894036] [2023-12-19 04:24:53,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383894036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:24:53,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269143040] [2023-12-19 04:24:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:24:53,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:24:53,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:24:53,011 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) [2023-12-19 04:24:53,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:24:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:24:53,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:24:53,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:24:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-19 04:24:53,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:24:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-19 04:24:54,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269143040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:24:54,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:24:54,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-19 04:24:54,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916669029] [2023-12-19 04:24:54,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:24:54,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 04:24:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:24:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 04:24:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:24:54,091 INFO L87 Difference]: Start difference. First operand 88204 states and 96435 transitions. Second operand has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:05,839 INFO L93 Difference]: Finished difference Result 220725 states and 240666 transitions. [2023-12-19 04:25:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 04:25:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 0 states have call successors, (0), 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 433 [2023-12-19 04:25:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:06,049 INFO L225 Difference]: With dead ends: 220725 [2023-12-19 04:25:06,049 INFO L226 Difference]: Without dead ends: 131245 [2023-12-19 04:25:06,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2023-12-19 04:25:06,127 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 8942 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 14773 mSolverCounterSat, 2380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8942 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 17153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2380 IncrementalHoareTripleChecker+Valid, 14773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:06,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8942 Valid, 438 Invalid, 17153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2380 Valid, 14773 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-12-19 04:25:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131245 states. [2023-12-19 04:25:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131245 to 106493. [2023-12-19 04:25:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106493 states, 106492 states have (on average 1.08518010742591) internal successors, (115563), 106492 states have internal predecessors, (115563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106493 states to 106493 states and 115563 transitions. [2023-12-19 04:25:08,541 INFO L78 Accepts]: Start accepts. Automaton has 106493 states and 115563 transitions. Word has length 433 [2023-12-19 04:25:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:08,541 INFO L495 AbstractCegarLoop]: Abstraction has 106493 states and 115563 transitions. [2023-12-19 04:25:08,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 106493 states and 115563 transitions. [2023-12-19 04:25:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 04:25:08,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:08,557 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, 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, 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] [2023-12-19 04:25:08,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 04:25:08,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 04:25:08,764 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:08,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2108734583, now seen corresponding path program 1 times [2023-12-19 04:25:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703602051] [2023-12-19 04:25:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:25:09,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:09,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703602051] [2023-12-19 04:25:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703602051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:09,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:09,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:09,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836034882] [2023-12-19 04:25:09,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:09,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:09,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:09,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:09,223 INFO L87 Difference]: Start difference. First operand 106493 states and 115563 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:10,842 INFO L93 Difference]: Finished difference Result 208728 states and 226572 transitions. [2023-12-19 04:25:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 522 [2023-12-19 04:25:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:10,974 INFO L225 Difference]: With dead ends: 208728 [2023-12-19 04:25:10,974 INFO L226 Difference]: Without dead ends: 103086 [2023-12-19 04:25:11,034 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 [2023-12-19 04:25:11,035 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 404 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:11,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 660 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:25:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103086 states. [2023-12-19 04:25:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103086 to 102230. [2023-12-19 04:25:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102230 states, 102229 states have (on average 1.0784611020356258) internal successors, (110250), 102229 states have internal predecessors, (110250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102230 states to 102230 states and 110250 transitions. [2023-12-19 04:25:12,390 INFO L78 Accepts]: Start accepts. Automaton has 102230 states and 110250 transitions. Word has length 522 [2023-12-19 04:25:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:12,390 INFO L495 AbstractCegarLoop]: Abstraction has 102230 states and 110250 transitions. [2023-12-19 04:25:12,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 102230 states and 110250 transitions. [2023-12-19 04:25:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-12-19 04:25:12,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:12,401 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, 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, 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] [2023-12-19 04:25:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:25:12,402 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:12,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 486092691, now seen corresponding path program 1 times [2023-12-19 04:25:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571633818] [2023-12-19 04:25:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:12,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:25:12,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571633818] [2023-12-19 04:25:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571633818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:12,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:12,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:12,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410414727] [2023-12-19 04:25:12,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:12,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:12,984 INFO L87 Difference]: Start difference. First operand 102230 states and 110250 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:14,910 INFO L93 Difference]: Finished difference Result 208734 states and 225181 transitions. [2023-12-19 04:25:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:14,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 549 [2023-12-19 04:25:14,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:15,228 INFO L225 Difference]: With dead ends: 208734 [2023-12-19 04:25:15,228 INFO L226 Difference]: Without dead ends: 106930 [2023-12-19 04:25:15,290 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 [2023-12-19 04:25:15,291 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 398 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:15,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 220 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:25:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106930 states. [2023-12-19 04:25:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106930 to 97124. [2023-12-19 04:25:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97124 states, 97123 states have (on average 1.0780350689332083) internal successors, (104702), 97123 states have internal predecessors, (104702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97124 states to 97124 states and 104702 transitions. [2023-12-19 04:25:16,529 INFO L78 Accepts]: Start accepts. Automaton has 97124 states and 104702 transitions. Word has length 549 [2023-12-19 04:25:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:16,530 INFO L495 AbstractCegarLoop]: Abstraction has 97124 states and 104702 transitions. [2023-12-19 04:25:16,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 97124 states and 104702 transitions. [2023-12-19 04:25:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-19 04:25:16,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:16,545 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, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:25:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:25:16,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:16,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 649383766, now seen corresponding path program 1 times [2023-12-19 04:25:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672129566] [2023-12-19 04:25:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-19 04:25:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672129566] [2023-12-19 04:25:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672129566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:17,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:25:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603029321] [2023-12-19 04:25:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:17,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:25:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:25:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:25:17,052 INFO L87 Difference]: Start difference. First operand 97124 states and 104702 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:20,142 INFO L93 Difference]: Finished difference Result 218098 states and 235251 transitions. [2023-12-19 04:25:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:25:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 593 [2023-12-19 04:25:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:20,323 INFO L225 Difference]: With dead ends: 218098 [2023-12-19 04:25:20,323 INFO L226 Difference]: Without dead ends: 121825 [2023-12-19 04:25:20,383 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 [2023-12-19 04:25:20,384 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 743 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:20,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 164 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:25:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121825 states. [2023-12-19 04:25:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121825 to 116717. [2023-12-19 04:25:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116717 states, 116716 states have (on average 1.074274306864526) internal successors, (125385), 116716 states have internal predecessors, (125385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116717 states to 116717 states and 125385 transitions. [2023-12-19 04:25:22,411 INFO L78 Accepts]: Start accepts. Automaton has 116717 states and 125385 transitions. Word has length 593 [2023-12-19 04:25:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:22,411 INFO L495 AbstractCegarLoop]: Abstraction has 116717 states and 125385 transitions. [2023-12-19 04:25:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 116717 states and 125385 transitions. [2023-12-19 04:25:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-19 04:25:22,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:22,445 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:25:22,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:25:22,445 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:22,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1558855070, now seen corresponding path program 1 times [2023-12-19 04:25:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:22,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783052733] [2023-12-19 04:25:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-19 04:25:22,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:22,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783052733] [2023-12-19 04:25:22,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783052733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:22,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:22,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094229263] [2023-12-19 04:25:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:22,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:22,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:22,753 INFO L87 Difference]: Start difference. First operand 116717 states and 125385 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:25,058 INFO L93 Difference]: Finished difference Result 235977 states and 253226 transitions. [2023-12-19 04:25:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 605 [2023-12-19 04:25:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:25,284 INFO L225 Difference]: With dead ends: 235977 [2023-12-19 04:25:25,284 INFO L226 Difference]: Without dead ends: 120111 [2023-12-19 04:25:25,391 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 [2023-12-19 04:25:25,392 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 495 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:25,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 616 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:25:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120111 states. [2023-12-19 04:25:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120111 to 117982. [2023-12-19 04:25:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117982 states, 117981 states have (on average 1.0671972605758555) internal successors, (125909), 117981 states have internal predecessors, (125909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117982 states to 117982 states and 125909 transitions. [2023-12-19 04:25:27,122 INFO L78 Accepts]: Start accepts. Automaton has 117982 states and 125909 transitions. Word has length 605 [2023-12-19 04:25:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:27,122 INFO L495 AbstractCegarLoop]: Abstraction has 117982 states and 125909 transitions. [2023-12-19 04:25:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 117982 states and 125909 transitions. [2023-12-19 04:25:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-19 04:25:27,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:27,134 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:25:27,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:25:27,134 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:27,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash -921692160, now seen corresponding path program 1 times [2023-12-19 04:25:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:27,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516302836] [2023-12-19 04:25:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-19 04:25:27,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:27,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516302836] [2023-12-19 04:25:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516302836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423398829] [2023-12-19 04:25:27,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:27,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:27,527 INFO L87 Difference]: Start difference. First operand 117982 states and 125909 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:29,611 INFO L93 Difference]: Finished difference Result 241925 states and 258220 transitions. [2023-12-19 04:25:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 605 [2023-12-19 04:25:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:29,762 INFO L225 Difference]: With dead ends: 241925 [2023-12-19 04:25:29,762 INFO L226 Difference]: Without dead ends: 124369 [2023-12-19 04:25:29,793 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 [2023-12-19 04:25:29,794 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 292 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:29,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 270 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:25:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124369 states. [2023-12-19 04:25:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124369 to 110323. [2023-12-19 04:25:31,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110323 states, 110322 states have (on average 1.0659977157774514) internal successors, (117603), 110322 states have internal predecessors, (117603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110323 states to 110323 states and 117603 transitions. [2023-12-19 04:25:31,247 INFO L78 Accepts]: Start accepts. Automaton has 110323 states and 117603 transitions. Word has length 605 [2023-12-19 04:25:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:31,247 INFO L495 AbstractCegarLoop]: Abstraction has 110323 states and 117603 transitions. [2023-12-19 04:25:31,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 110323 states and 117603 transitions. [2023-12-19 04:25:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-19 04:25:31,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:31,257 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:25:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:25:31,257 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:31,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 936881062, now seen corresponding path program 1 times [2023-12-19 04:25:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060857864] [2023-12-19 04:25:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 613 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-19 04:25:32,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060857864] [2023-12-19 04:25:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060857864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:32,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:32,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:25:32,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039831934] [2023-12-19 04:25:32,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:32,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:25:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:25:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:25:32,335 INFO L87 Difference]: Start difference. First operand 110323 states and 117603 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:35,313 INFO L93 Difference]: Finished difference Result 239822 states and 255054 transitions. [2023-12-19 04:25:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:25:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 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 620 [2023-12-19 04:25:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:35,471 INFO L225 Difference]: With dead ends: 239822 [2023-12-19 04:25:35,471 INFO L226 Difference]: Without dead ends: 129075 [2023-12-19 04:25:35,521 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 [2023-12-19 04:25:35,522 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 776 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:35,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 176 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:25:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129075 states. [2023-12-19 04:25:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129075 to 114154. [2023-12-19 04:25:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114154 states, 114153 states have (on average 1.064921640254746) internal successors, (121564), 114153 states have internal predecessors, (121564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114154 states to 114154 states and 121564 transitions. [2023-12-19 04:25:37,188 INFO L78 Accepts]: Start accepts. Automaton has 114154 states and 121564 transitions. Word has length 620 [2023-12-19 04:25:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:37,189 INFO L495 AbstractCegarLoop]: Abstraction has 114154 states and 121564 transitions. [2023-12-19 04:25:37,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 114154 states and 121564 transitions. [2023-12-19 04:25:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-19 04:25:37,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:37,202 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:25:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:25:37,202 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:37,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1612774919, now seen corresponding path program 1 times [2023-12-19 04:25:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926610116] [2023-12-19 04:25:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-19 04:25:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926610116] [2023-12-19 04:25:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926610116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:37,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156549427] [2023-12-19 04:25:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:37,833 INFO L87 Difference]: Start difference. First operand 114154 states and 121564 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:39,607 INFO L93 Difference]: Finished difference Result 224476 states and 239016 transitions. [2023-12-19 04:25:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:39,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 651 [2023-12-19 04:25:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:39,745 INFO L225 Difference]: With dead ends: 224476 [2023-12-19 04:25:39,745 INFO L226 Difference]: Without dead ends: 110748 [2023-12-19 04:25:39,808 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 [2023-12-19 04:25:39,809 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 411 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:39,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 672 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:25:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110748 states. [2023-12-19 04:25:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110748 to 103086. [2023-12-19 04:25:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103086 states, 103085 states have (on average 1.060697482659941) internal successors, (109342), 103085 states have internal predecessors, (109342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103086 states to 103086 states and 109342 transitions. [2023-12-19 04:25:41,473 INFO L78 Accepts]: Start accepts. Automaton has 103086 states and 109342 transitions. Word has length 651 [2023-12-19 04:25:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:41,473 INFO L495 AbstractCegarLoop]: Abstraction has 103086 states and 109342 transitions. [2023-12-19 04:25:41,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 103086 states and 109342 transitions. [2023-12-19 04:25:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-12-19 04:25:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:41,490 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, 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, 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, 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] [2023-12-19 04:25:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:25:41,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:41,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash -984408284, now seen corresponding path program 1 times [2023-12-19 04:25:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063680816] [2023-12-19 04:25:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:25:41,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:41,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063680816] [2023-12-19 04:25:41,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063680816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:41,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:41,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:25:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985641965] [2023-12-19 04:25:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:41,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:25:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:25:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:25:42,000 INFO L87 Difference]: Start difference. First operand 103086 states and 109342 transitions. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:45,114 INFO L93 Difference]: Finished difference Result 226182 states and 240165 transitions. [2023-12-19 04:25:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:25:45,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 685 [2023-12-19 04:25:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:45,299 INFO L225 Difference]: With dead ends: 226182 [2023-12-19 04:25:45,299 INFO L226 Difference]: Without dead ends: 123522 [2023-12-19 04:25:45,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:25:45,372 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1580 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:45,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 141 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:25:45,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123522 states. [2023-12-19 04:25:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123522 to 100946. [2023-12-19 04:25:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100946 states, 100945 states have (on average 1.0526326217247015) internal successors, (106258), 100945 states have internal predecessors, (106258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100946 states to 100946 states and 106258 transitions. [2023-12-19 04:25:47,053 INFO L78 Accepts]: Start accepts. Automaton has 100946 states and 106258 transitions. Word has length 685 [2023-12-19 04:25:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:47,053 INFO L495 AbstractCegarLoop]: Abstraction has 100946 states and 106258 transitions. [2023-12-19 04:25:47,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 100946 states and 106258 transitions. [2023-12-19 04:25:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-19 04:25:47,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:47,070 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:25:47,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:25:47,071 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:47,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:47,071 INFO L85 PathProgramCache]: Analyzing trace with hash 274370320, now seen corresponding path program 1 times [2023-12-19 04:25:47,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:47,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947716074] [2023-12-19 04:25:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:47,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-19 04:25:47,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:47,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947716074] [2023-12-19 04:25:47,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947716074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:47,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841383161] [2023-12-19 04:25:47,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:47,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:47,604 INFO L87 Difference]: Start difference. First operand 100946 states and 106258 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:49,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:49,635 INFO L93 Difference]: Finished difference Result 210844 states and 221860 transitions. [2023-12-19 04:25:49,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:49,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 705 [2023-12-19 04:25:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:49,779 INFO L225 Difference]: With dead ends: 210844 [2023-12-19 04:25:49,779 INFO L226 Difference]: Without dead ends: 109897 [2023-12-19 04:25:49,830 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 [2023-12-19 04:25:49,831 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 170 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:49,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 669 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:25:49,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109897 states. [2023-12-19 04:25:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109897 to 109027. [2023-12-19 04:25:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109027 states, 109026 states have (on average 1.0487039788674262) internal successors, (114336), 109026 states have internal predecessors, (114336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109027 states to 109027 states and 114336 transitions. [2023-12-19 04:25:51,311 INFO L78 Accepts]: Start accepts. Automaton has 109027 states and 114336 transitions. Word has length 705 [2023-12-19 04:25:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:51,311 INFO L495 AbstractCegarLoop]: Abstraction has 109027 states and 114336 transitions. [2023-12-19 04:25:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 109027 states and 114336 transitions. [2023-12-19 04:25:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-12-19 04:25:51,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:51,328 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, 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, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:25:51,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:25:51,328 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:51,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash -551652975, now seen corresponding path program 1 times [2023-12-19 04:25:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354972328] [2023-12-19 04:25:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:51,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-12-19 04:25:52,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:52,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354972328] [2023-12-19 04:25:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354972328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:52,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:25:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637320054] [2023-12-19 04:25:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:25:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:25:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:25:52,244 INFO L87 Difference]: Start difference. First operand 109027 states and 114336 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:54,925 INFO L93 Difference]: Finished difference Result 216338 states and 226256 transitions. [2023-12-19 04:25:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:25:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 712 [2023-12-19 04:25:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:55,063 INFO L225 Difference]: With dead ends: 216338 [2023-12-19 04:25:55,064 INFO L226 Difference]: Without dead ends: 107737 [2023-12-19 04:25:55,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:25:55,127 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 688 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:55,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 290 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:25:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107737 states. [2023-12-19 04:25:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107737 to 102195. [2023-12-19 04:25:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102195 states, 102194 states have (on average 1.0435250601796584) internal successors, (106642), 102194 states have internal predecessors, (106642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102195 states to 102195 states and 106642 transitions. [2023-12-19 04:25:56,756 INFO L78 Accepts]: Start accepts. Automaton has 102195 states and 106642 transitions. Word has length 712 [2023-12-19 04:25:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:25:56,756 INFO L495 AbstractCegarLoop]: Abstraction has 102195 states and 106642 transitions. [2023-12-19 04:25:56,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 102195 states and 106642 transitions. [2023-12-19 04:25:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-19 04:25:56,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:25:56,776 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, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:25:56,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:25:56,776 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:25:56,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:25:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1605639357, now seen corresponding path program 1 times [2023-12-19 04:25:56,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:25:56,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493465371] [2023-12-19 04:25:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:25:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:25:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:25:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 775 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-12-19 04:25:57,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:25:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493465371] [2023-12-19 04:25:57,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493465371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:25:57,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:25:57,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:25:57,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512133172] [2023-12-19 04:25:57,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:25:57,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:25:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:25:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:25:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:25:57,473 INFO L87 Difference]: Start difference. First operand 102195 states and 106642 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:25:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:25:59,283 INFO L93 Difference]: Finished difference Result 203966 states and 212858 transitions. [2023-12-19 04:25:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:25:59,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 [2023-12-19 04:25:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:25:59,414 INFO L225 Difference]: With dead ends: 203966 [2023-12-19 04:25:59,414 INFO L226 Difference]: Without dead ends: 102197 [2023-12-19 04:25:59,463 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 [2023-12-19 04:25:59,464 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 94 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:25:59,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 732 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:25:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102197 states. [2023-12-19 04:26:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102197 to 101770. [2023-12-19 04:26:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101770 states, 101769 states have (on average 1.043412040994802) internal successors, (106187), 101769 states have internal predecessors, (106187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101770 states to 101770 states and 106187 transitions. [2023-12-19 04:26:00,857 INFO L78 Accepts]: Start accepts. Automaton has 101770 states and 106187 transitions. Word has length 742 [2023-12-19 04:26:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:00,858 INFO L495 AbstractCegarLoop]: Abstraction has 101770 states and 106187 transitions. [2023-12-19 04:26:00,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 101770 states and 106187 transitions. [2023-12-19 04:26:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-12-19 04:26:00,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:00,874 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 04:26:00,874 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:00,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 801194215, now seen corresponding path program 1 times [2023-12-19 04:26:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:00,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777356354] [2023-12-19 04:26:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:26:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777356354] [2023-12-19 04:26:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777356354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:01,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:01,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:26:01,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78771498] [2023-12-19 04:26:01,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:01,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:26:01,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:26:01,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:26:01,665 INFO L87 Difference]: Start difference. First operand 101770 states and 106187 transitions. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:04,416 INFO L93 Difference]: Finished difference Result 215896 states and 225009 transitions. [2023-12-19 04:26:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:26:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 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 758 [2023-12-19 04:26:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:04,571 INFO L225 Difference]: With dead ends: 215896 [2023-12-19 04:26:04,571 INFO L226 Difference]: Without dead ends: 114127 [2023-12-19 04:26:04,627 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 [2023-12-19 04:26:04,628 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 681 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:04,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 87 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:26:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114127 states. [2023-12-19 04:26:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114127 to 98358. [2023-12-19 04:26:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98358 states, 98357 states have (on average 1.0436369551735005) internal successors, (102649), 98357 states have internal predecessors, (102649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98358 states to 98358 states and 102649 transitions. [2023-12-19 04:26:06,088 INFO L78 Accepts]: Start accepts. Automaton has 98358 states and 102649 transitions. Word has length 758 [2023-12-19 04:26:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:06,089 INFO L495 AbstractCegarLoop]: Abstraction has 98358 states and 102649 transitions. [2023-12-19 04:26:06,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 98358 states and 102649 transitions. [2023-12-19 04:26:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-19 04:26:06,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:06,108 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:26:06,108 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:06,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash -25925634, now seen corresponding path program 1 times [2023-12-19 04:26:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:06,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168601551] [2023-12-19 04:26:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:26:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168601551] [2023-12-19 04:26:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168601551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:06,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:06,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415348954] [2023-12-19 04:26:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:06,664 INFO L87 Difference]: Start difference. First operand 98358 states and 102649 transitions. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:08,373 INFO L93 Difference]: Finished difference Result 199697 states and 208416 transitions. [2023-12-19 04:26:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 765 [2023-12-19 04:26:08,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:08,503 INFO L225 Difference]: With dead ends: 199697 [2023-12-19 04:26:08,503 INFO L226 Difference]: Without dead ends: 101765 [2023-12-19 04:26:08,564 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 [2023-12-19 04:26:08,565 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 221 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:08,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 730 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:26:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101765 states. [2023-12-19 04:26:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101765 to 100486. [2023-12-19 04:26:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100486 states, 100485 states have (on average 1.0429218291287257) internal successors, (104798), 100485 states have internal predecessors, (104798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100486 states to 100486 states and 104798 transitions. [2023-12-19 04:26:10,128 INFO L78 Accepts]: Start accepts. Automaton has 100486 states and 104798 transitions. Word has length 765 [2023-12-19 04:26:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:10,129 INFO L495 AbstractCegarLoop]: Abstraction has 100486 states and 104798 transitions. [2023-12-19 04:26:10,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 100486 states and 104798 transitions. [2023-12-19 04:26:10,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-12-19 04:26:10,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:10,155 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, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:10,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 04:26:10,156 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:10,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1829545250, now seen corresponding path program 1 times [2023-12-19 04:26:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139254647] [2023-12-19 04:26:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 900 proven. 94 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:26:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139254647] [2023-12-19 04:26:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139254647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:26:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297035682] [2023-12-19 04:26:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:11,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:26:11,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:26:11,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:26:11,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process