/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/Problem13_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:54:19,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:54:19,305 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 03:54:19,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:54:19,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:54:19,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:54:19,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:54:19,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:54:19,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:54:19,337 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:54:19,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:54:19,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:54:19,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:54:19,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:54:19,340 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:54:19,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:54:19,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:54:19,340 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:54:19,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:54:19,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:54:19,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:54:19,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:54:19,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:54:19,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:54:19,341 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:54:19,341 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:54:19,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:54:19,342 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:54:19,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:54:19,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:54:19,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:54:19,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:54:19,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:54:19,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:54:19,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:54:19,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:54:19,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:54:19,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:54:19,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:54:19,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:54:19,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:54:19,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:54:19,518 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:54:19,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2023-12-19 03:54:20,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:54:20,947 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:54:20,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2023-12-19 03:54:20,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee66cfe8d/2a1b93cde2ff4242b2ec14a1723d4a80/FLAGa8a7b0055 [2023-12-19 03:54:20,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee66cfe8d/2a1b93cde2ff4242b2ec14a1723d4a80 [2023-12-19 03:54:20,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:54:20,994 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:54:20,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:54:20,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:54:20,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:54:20,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:54:20" (1/1) ... [2023-12-19 03:54:21,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d203316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:20, skipping insertion in model container [2023-12-19 03:54:21,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:54:20" (1/1) ... [2023-12-19 03:54:21,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:54:21,301 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/Problem13_label14.c[5911,5924] [2023-12-19 03:54:21,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:54:21,846 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:54:21,865 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14.c[5911,5924] [2023-12-19 03:54:22,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:54:22,216 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:54:22,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22 WrapperNode [2023-12-19 03:54:22,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:54:22,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:54:22,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:54:22,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:54:22,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:22,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:22,730 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 03:54:22,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:54:22,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:54:22,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:54:22,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:54:22,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:22,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:22,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:22,999 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 03:54:23,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:54:23,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:54:23,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:54:23,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:54:23,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (1/1) ... [2023-12-19 03:54:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:54:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:54:23,390 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 03:54:23,421 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 03:54:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:54:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:54:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:54:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:54:23,482 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:54:23,484 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:54:27,485 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:54:27,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:54:27,591 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:54:27,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:54:27 BoogieIcfgContainer [2023-12-19 03:54:27,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:54:27,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:54:27,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:54:27,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:54:27,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:54:20" (1/3) ... [2023-12-19 03:54:27,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8bac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:54:27, skipping insertion in model container [2023-12-19 03:54:27,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:22" (2/3) ... [2023-12-19 03:54:27,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8bac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:54:27, skipping insertion in model container [2023-12-19 03:54:27,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:54:27" (3/3) ... [2023-12-19 03:54:27,597 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2023-12-19 03:54:27,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:54:27,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:54:27,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:54:27,656 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;@6207ff0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:54:27,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:54:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 03:54:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 03:54:27,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:27,672 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] [2023-12-19 03:54:27,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:27,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1745199143, now seen corresponding path program 1 times [2023-12-19 03:54:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476785050] [2023-12-19 03:54:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:27,814 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 03:54:27,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:27,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476785050] [2023-12-19 03:54:27,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476785050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:27,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86292497] [2023-12-19 03:54:27,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:27,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:54:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:54:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:54:27,849 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 03:54:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:27,924 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 03:54:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:54:27,925 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-19 03:54:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:27,939 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 03:54:27,940 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 03:54:27,945 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 03:54:27,947 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 03:54:27,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:54:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 03:54:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 03:54:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 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 03:54:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 03:54:28,011 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 40 [2023-12-19 03:54:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:28,011 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 03:54:28,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 03:54:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 03:54:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 03:54:28,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:28,012 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] [2023-12-19 03:54:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:54:28,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:28,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1416322832, now seen corresponding path program 1 times [2023-12-19 03:54:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128033880] [2023-12-19 03:54:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:28,298 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 03:54:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:28,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128033880] [2023-12-19 03:54:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128033880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615540830] [2023-12-19 03:54:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:54:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:54:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:28,304 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 03:54:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:34,347 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-12-19 03:54:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:54:34,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-19 03:54:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:34,359 INFO L225 Difference]: With dead ends: 3696 [2023-12-19 03:54:34,360 INFO L226 Difference]: Without dead ends: 2663 [2023-12-19 03:54:34,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:54:34,366 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2680 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:34,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2680 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 03:54:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-19 03:54:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-12-19 03:54:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 0 states have call successors, (0), 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 03:54:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-12-19 03:54:34,423 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 40 [2023-12-19 03:54:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:34,424 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-12-19 03:54:34,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 03:54:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-12-19 03:54:34,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-19 03:54:34,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:34,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:34,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:54:34,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:34,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1808941784, now seen corresponding path program 1 times [2023-12-19 03:54:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:34,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068564057] [2023-12-19 03:54:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:34,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 03:54:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068564057] [2023-12-19 03:54:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068564057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:34,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523228146] [2023-12-19 03:54:34,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:34,636 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 03:54:37,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:37,832 INFO L93 Difference]: Finished difference Result 6141 states and 9711 transitions. [2023-12-19 03:54:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 165 [2023-12-19 03:54:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:37,845 INFO L225 Difference]: With dead ends: 6141 [2023-12-19 03:54:37,845 INFO L226 Difference]: Without dead ends: 4267 [2023-12-19 03:54:37,848 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 03:54:37,849 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:37,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1186 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2509 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:54:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2023-12-19 03:54:37,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4253. [2023-12-19 03:54:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 1.351599247412982) internal successors, (5747), 4252 states have internal predecessors, (5747), 0 states have call successors, (0), 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 03:54:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 5747 transitions. [2023-12-19 03:54:37,907 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 5747 transitions. Word has length 165 [2023-12-19 03:54:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:37,907 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 5747 transitions. [2023-12-19 03:54:37,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 03:54:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 5747 transitions. [2023-12-19 03:54:37,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-19 03:54:37,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:37,912 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:54:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:54:37,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:37,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash 748562156, now seen corresponding path program 1 times [2023-12-19 03:54:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:37,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691099447] [2023-12-19 03:54:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 03:54:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691099447] [2023-12-19 03:54:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691099447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:38,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:38,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8904243] [2023-12-19 03:54:38,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:38,135 INFO L87 Difference]: Start difference. First operand 4253 states and 5747 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 03:54:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:41,307 INFO L93 Difference]: Finished difference Result 10896 states and 15273 transitions. [2023-12-19 03:54:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:41,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 03:54:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:41,329 INFO L225 Difference]: With dead ends: 10896 [2023-12-19 03:54:41,329 INFO L226 Difference]: Without dead ends: 7431 [2023-12-19 03:54:41,335 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 03:54:41,336 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:41,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 953 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:54:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2023-12-19 03:54:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7425. [2023-12-19 03:54:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7425 states, 7424 states have (on average 1.288927801724138) internal successors, (9569), 7424 states have internal predecessors, (9569), 0 states have call successors, (0), 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 03:54:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 9569 transitions. [2023-12-19 03:54:41,441 INFO L78 Accepts]: Start accepts. Automaton has 7425 states and 9569 transitions. Word has length 207 [2023-12-19 03:54:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:41,442 INFO L495 AbstractCegarLoop]: Abstraction has 7425 states and 9569 transitions. [2023-12-19 03:54:41,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 03:54:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7425 states and 9569 transitions. [2023-12-19 03:54:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-19 03:54:41,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:41,446 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:54:41,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 03:54:41,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:41,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash 248693903, now seen corresponding path program 1 times [2023-12-19 03:54:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419901932] [2023-12-19 03:54:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-19 03:54:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419901932] [2023-12-19 03:54:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419901932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:41,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126378103] [2023-12-19 03:54:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:41,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:41,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:41,666 INFO L87 Difference]: Start difference. First operand 7425 states and 9569 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 03:54:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:44,749 INFO L93 Difference]: Finished difference Result 19618 states and 25903 transitions. [2023-12-19 03:54:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:44,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 221 [2023-12-19 03:54:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:44,790 INFO L225 Difference]: With dead ends: 19618 [2023-12-19 03:54:44,790 INFO L226 Difference]: Without dead ends: 12981 [2023-12-19 03:54:44,799 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 03:54:44,801 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:44,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 635 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:54:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2023-12-19 03:54:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12974. [2023-12-19 03:54:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12974 states, 12973 states have (on average 1.2719494334386803) internal successors, (16501), 12973 states have internal predecessors, (16501), 0 states have call successors, (0), 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 03:54:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12974 states to 12974 states and 16501 transitions. [2023-12-19 03:54:45,013 INFO L78 Accepts]: Start accepts. Automaton has 12974 states and 16501 transitions. Word has length 221 [2023-12-19 03:54:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 12974 states and 16501 transitions. [2023-12-19 03:54:45,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 03:54:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 12974 states and 16501 transitions. [2023-12-19 03:54:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-19 03:54:45,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:45,017 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:54:45,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 03:54:45,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:45,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1496443372, now seen corresponding path program 1 times [2023-12-19 03:54:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548619786] [2023-12-19 03:54:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:45,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-19 03:54:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548619786] [2023-12-19 03:54:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548619786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:45,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800066102] [2023-12-19 03:54:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:45,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:45,216 INFO L87 Difference]: Start difference. First operand 12974 states and 16501 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:54:48,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:48,290 INFO L93 Difference]: Finished difference Result 36179 states and 46591 transitions. [2023-12-19 03:54:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:48,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 237 [2023-12-19 03:54:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:48,332 INFO L225 Difference]: With dead ends: 36179 [2023-12-19 03:54:48,332 INFO L226 Difference]: Without dead ends: 23993 [2023-12-19 03:54:48,349 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 03:54:48,349 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:48,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 984 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:54:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2023-12-19 03:54:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 22415. [2023-12-19 03:54:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22415 states, 22414 states have (on average 1.2111626661907737) internal successors, (27147), 22414 states have internal predecessors, (27147), 0 states have call successors, (0), 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 03:54:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22415 states to 22415 states and 27147 transitions. [2023-12-19 03:54:48,627 INFO L78 Accepts]: Start accepts. Automaton has 22415 states and 27147 transitions. Word has length 237 [2023-12-19 03:54:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:48,627 INFO L495 AbstractCegarLoop]: Abstraction has 22415 states and 27147 transitions. [2023-12-19 03:54:48,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 03:54:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 22415 states and 27147 transitions. [2023-12-19 03:54:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-19 03:54:48,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:48,630 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:54:48,630 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:48,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1303245769, now seen corresponding path program 1 times [2023-12-19 03:54:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154025450] [2023-12-19 03:54:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:48,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 03:54:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154025450] [2023-12-19 03:54:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154025450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043080864] [2023-12-19 03:54:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:48,833 INFO L87 Difference]: Start difference. First operand 22415 states and 27147 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 03:54:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:51,897 INFO L93 Difference]: Finished difference Result 55857 states and 69067 transitions. [2023-12-19 03:54:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 280 [2023-12-19 03:54:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:51,954 INFO L225 Difference]: With dead ends: 55857 [2023-12-19 03:54:51,954 INFO L226 Difference]: Without dead ends: 34230 [2023-12-19 03:54:51,982 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 03:54:51,984 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 887 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:51,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:54:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34230 states. [2023-12-19 03:54:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34230 to 33433. [2023-12-19 03:54:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33433 states, 33432 states have (on average 1.1906257477865518) internal successors, (39805), 33432 states have internal predecessors, (39805), 0 states have call successors, (0), 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 03:54:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33433 states to 33433 states and 39805 transitions. [2023-12-19 03:54:52,360 INFO L78 Accepts]: Start accepts. Automaton has 33433 states and 39805 transitions. Word has length 280 [2023-12-19 03:54:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:52,361 INFO L495 AbstractCegarLoop]: Abstraction has 33433 states and 39805 transitions. [2023-12-19 03:54:52,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 03:54:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 33433 states and 39805 transitions. [2023-12-19 03:54:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-19 03:54:52,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:52,366 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:52,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 03:54:52,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:52,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash -383115339, now seen corresponding path program 1 times [2023-12-19 03:54:52,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:52,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039303640] [2023-12-19 03:54:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:52,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 03:54:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039303640] [2023-12-19 03:54:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039303640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:52,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:54:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824985645] [2023-12-19 03:54:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:54:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:54:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:54:52,558 INFO L87 Difference]: Start difference. First operand 33433 states and 39805 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 03:54:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:58,853 INFO L93 Difference]: Finished difference Result 117461 states and 141039 transitions. [2023-12-19 03:54:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:54:58,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 03:54:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:59,035 INFO L225 Difference]: With dead ends: 117461 [2023-12-19 03:54:59,035 INFO L226 Difference]: Without dead ends: 84816 [2023-12-19 03:54:59,058 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 03:54:59,059 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1740 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6067 mSolverCounterSat, 1187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 6067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:59,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 688 Invalid, 7254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 6067 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 03:54:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84816 states. [2023-12-19 03:54:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84816 to 84686. [2023-12-19 03:54:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84686 states, 84685 states have (on average 1.1723445710574483) internal successors, (99280), 84685 states have internal predecessors, (99280), 0 states have call successors, (0), 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 03:54:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84686 states to 84686 states and 99280 transitions. [2023-12-19 03:54:59,986 INFO L78 Accepts]: Start accepts. Automaton has 84686 states and 99280 transitions. Word has length 328 [2023-12-19 03:54:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:59,986 INFO L495 AbstractCegarLoop]: Abstraction has 84686 states and 99280 transitions. [2023-12-19 03:54:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 03:54:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 84686 states and 99280 transitions. [2023-12-19 03:55:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-19 03:55:00,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:00,196 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:00,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:55:00,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:00,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1419953172, now seen corresponding path program 1 times [2023-12-19 03:55:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170112772] [2023-12-19 03:55:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:00,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-19 03:55:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170112772] [2023-12-19 03:55:00,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170112772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:00,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:00,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:55:00,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385212773] [2023-12-19 03:55:00,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:00,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:00,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:00,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:00,566 INFO L87 Difference]: Start difference. First operand 84686 states and 99280 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 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 03:55:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:03,663 INFO L93 Difference]: Finished difference Result 158350 states and 186724 transitions. [2023-12-19 03:55:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 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 337 [2023-12-19 03:55:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:03,781 INFO L225 Difference]: With dead ends: 158350 [2023-12-19 03:55:03,781 INFO L226 Difference]: Without dead ends: 84695 [2023-12-19 03:55:03,815 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 03:55:03,817 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:03,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1199 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:55:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84695 states. [2023-12-19 03:55:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84695 to 84686. [2023-12-19 03:55:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84686 states, 84685 states have (on average 1.171577020723859) internal successors, (99215), 84685 states have internal predecessors, (99215), 0 states have call successors, (0), 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 03:55:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84686 states to 84686 states and 99215 transitions. [2023-12-19 03:55:04,822 INFO L78 Accepts]: Start accepts. Automaton has 84686 states and 99215 transitions. Word has length 337 [2023-12-19 03:55:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:04,822 INFO L495 AbstractCegarLoop]: Abstraction has 84686 states and 99215 transitions. [2023-12-19 03:55:04,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 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 03:55:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 84686 states and 99215 transitions. [2023-12-19 03:55:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-19 03:55:04,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:04,827 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:04,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:55:04,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:04,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1156284566, now seen corresponding path program 1 times [2023-12-19 03:55:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773801804] [2023-12-19 03:55:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 03:55:05,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773801804] [2023-12-19 03:55:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773801804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:05,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210039484] [2023-12-19 03:55:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:05,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:05,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:05,994 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 03:55:06,048 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 03:55:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:06,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:55:06,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-19 03:55:06,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210039484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:06,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:55:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247592495] [2023-12-19 03:55:06,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:06,337 INFO L87 Difference]: Start difference. First operand 84686 states and 99215 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 03:55:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:09,354 INFO L93 Difference]: Finished difference Result 168582 states and 197636 transitions. [2023-12-19 03:55:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 366 [2023-12-19 03:55:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:09,481 INFO L225 Difference]: With dead ends: 168582 [2023-12-19 03:55:09,481 INFO L226 Difference]: Without dead ends: 84684 [2023-12-19 03:55:09,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:09,526 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1123 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:09,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1444 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:55:09,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84684 states. [2023-12-19 03:55:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84684 to 83896. [2023-12-19 03:55:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83896 states, 83895 states have (on average 1.1277906907443829) internal successors, (94616), 83895 states have internal predecessors, (94616), 0 states have call successors, (0), 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 03:55:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83896 states to 83896 states and 94616 transitions. [2023-12-19 03:55:10,569 INFO L78 Accepts]: Start accepts. Automaton has 83896 states and 94616 transitions. Word has length 366 [2023-12-19 03:55:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:10,570 INFO L495 AbstractCegarLoop]: Abstraction has 83896 states and 94616 transitions. [2023-12-19 03:55:10,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 03:55:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand 83896 states and 94616 transitions. [2023-12-19 03:55:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-19 03:55:10,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:10,576 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:10,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 03:55:10,781 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 03:55:10,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:10,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash -457089687, now seen corresponding path program 1 times [2023-12-19 03:55:10,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:10,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538244143] [2023-12-19 03:55:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:10,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 03:55:11,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:11,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538244143] [2023-12-19 03:55:11,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538244143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:11,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:11,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:11,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507987489] [2023-12-19 03:55:11,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:11,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:11,119 INFO L87 Difference]: Start difference. First operand 83896 states and 94616 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 03:55:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:14,713 INFO L93 Difference]: Finished difference Result 192984 states and 220140 transitions. [2023-12-19 03:55:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 396 [2023-12-19 03:55:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:14,848 INFO L225 Difference]: With dead ends: 192984 [2023-12-19 03:55:14,848 INFO L226 Difference]: Without dead ends: 109876 [2023-12-19 03:55:14,876 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 03:55:14,877 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 891 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 3357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:14,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 942 Invalid, 3357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:55:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109876 states. [2023-12-19 03:55:16,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109876 to 108282. [2023-12-19 03:55:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108282 states, 108281 states have (on average 1.1321376788171518) internal successors, (122589), 108281 states have internal predecessors, (122589), 0 states have call successors, (0), 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 03:55:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108282 states to 108282 states and 122589 transitions. [2023-12-19 03:55:16,438 INFO L78 Accepts]: Start accepts. Automaton has 108282 states and 122589 transitions. Word has length 396 [2023-12-19 03:55:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:16,439 INFO L495 AbstractCegarLoop]: Abstraction has 108282 states and 122589 transitions. [2023-12-19 03:55:16,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 03:55:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand 108282 states and 122589 transitions. [2023-12-19 03:55:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-19 03:55:16,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:16,455 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:16,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 03:55:16,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:16,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1115855812, now seen corresponding path program 1 times [2023-12-19 03:55:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:16,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153030403] [2023-12-19 03:55:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 03:55:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153030403] [2023-12-19 03:55:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153030403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:16,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:16,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362950586] [2023-12-19 03:55:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:16,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:16,863 INFO L87 Difference]: Start difference. First operand 108282 states and 122589 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 03:55:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:20,534 INFO L93 Difference]: Finished difference Result 241762 states and 276152 transitions. [2023-12-19 03:55:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 434 [2023-12-19 03:55:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:20,722 INFO L225 Difference]: With dead ends: 241762 [2023-12-19 03:55:20,722 INFO L226 Difference]: Without dead ends: 134268 [2023-12-19 03:55:20,780 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 03:55:20,781 INFO L413 NwaCegarLoop]: 1785 mSDtfsCounter, 781 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:20,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1935 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:55:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134268 states. [2023-12-19 03:55:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134268 to 134251. [2023-12-19 03:55:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134251 states, 134250 states have (on average 1.1154040968342644) internal successors, (149743), 134250 states have internal predecessors, (149743), 0 states have call successors, (0), 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 03:55:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134251 states to 134251 states and 149743 transitions. [2023-12-19 03:55:22,588 INFO L78 Accepts]: Start accepts. Automaton has 134251 states and 149743 transitions. Word has length 434 [2023-12-19 03:55:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:22,588 INFO L495 AbstractCegarLoop]: Abstraction has 134251 states and 149743 transitions. [2023-12-19 03:55:22,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 03:55:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 134251 states and 149743 transitions. [2023-12-19 03:55:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-19 03:55:22,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:22,598 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:22,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 03:55:22,599 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:22,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2129125583, now seen corresponding path program 1 times [2023-12-19 03:55:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:22,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587464545] [2023-12-19 03:55:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 315 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 03:55:23,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:23,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587464545] [2023-12-19 03:55:23,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587464545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:23,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460288411] [2023-12-19 03:55:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:23,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:23,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:23,826 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 03:55:23,828 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 03:55:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:23,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:55:23,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:55:24,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:24,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460288411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:24,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:24,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:55:24,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940088727] [2023-12-19 03:55:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:24,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:24,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:24,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:24,171 INFO L87 Difference]: Start difference. First operand 134251 states and 149743 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 03:55:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:27,550 INFO L93 Difference]: Finished difference Result 261380 states and 293522 transitions. [2023-12-19 03:55:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:27,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 470 [2023-12-19 03:55:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:27,761 INFO L225 Difference]: With dead ends: 261380 [2023-12-19 03:55:27,761 INFO L226 Difference]: Without dead ends: 143665 [2023-12-19 03:55:27,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:27,819 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1134 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:27,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 387 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:55:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143665 states. [2023-12-19 03:55:29,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143665 to 143665. [2023-12-19 03:55:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143665 states, 143664 states have (on average 1.1103825593050451) internal successors, (159522), 143664 states have internal predecessors, (159522), 0 states have call successors, (0), 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 03:55:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143665 states to 143665 states and 159522 transitions. [2023-12-19 03:55:29,735 INFO L78 Accepts]: Start accepts. Automaton has 143665 states and 159522 transitions. Word has length 470 [2023-12-19 03:55:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:29,736 INFO L495 AbstractCegarLoop]: Abstraction has 143665 states and 159522 transitions. [2023-12-19 03:55:29,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 03:55:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 143665 states and 159522 transitions. [2023-12-19 03:55:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-19 03:55:29,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:29,749 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:29,757 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 03:55:29,954 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,SelfDestructingSolverStorable12 [2023-12-19 03:55:29,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:29,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash -855891550, now seen corresponding path program 1 times [2023-12-19 03:55:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:29,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612440956] [2023-12-19 03:55:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 131 proven. 258 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 03:55:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612440956] [2023-12-19 03:55:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612440956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823467779] [2023-12-19 03:55:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:31,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:31,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:31,160 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 03:55:31,188 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 03:55:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:31,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:55:31,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-19 03:55:32,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823467779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 03:55:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756498948] [2023-12-19 03:55:32,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:32,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:32,056 INFO L87 Difference]: Start difference. First operand 143665 states and 159522 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 0 states have call successors, (0), 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 03:55:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:35,060 INFO L93 Difference]: Finished difference Result 274743 states and 305965 transitions. [2023-12-19 03:55:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:35,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 0 states have call successors, (0), 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 505 [2023-12-19 03:55:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:35,247 INFO L225 Difference]: With dead ends: 274743 [2023-12-19 03:55:35,247 INFO L226 Difference]: Without dead ends: 147614 [2023-12-19 03:55:35,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:35,316 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 544 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:35,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1140 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:55:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147614 states. [2023-12-19 03:55:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147614 to 147604. [2023-12-19 03:55:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147604 states, 147603 states have (on average 1.108656328123412) internal successors, (163641), 147603 states have internal predecessors, (163641), 0 states have call successors, (0), 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 03:55:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147604 states to 147604 states and 163641 transitions. [2023-12-19 03:55:37,502 INFO L78 Accepts]: Start accepts. Automaton has 147604 states and 163641 transitions. Word has length 505 [2023-12-19 03:55:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:37,502 INFO L495 AbstractCegarLoop]: Abstraction has 147604 states and 163641 transitions. [2023-12-19 03:55:37,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 0 states have call successors, (0), 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 03:55:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 147604 states and 163641 transitions. [2023-12-19 03:55:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-19 03:55:37,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:37,517 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, 5, 5, 5, 5, 5, 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, 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] [2023-12-19 03:55:37,526 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 03:55:37,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:37,726 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:37,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2045275976, now seen corresponding path program 1 times [2023-12-19 03:55:37,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471914240] [2023-12-19 03:55:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:37,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-19 03:55:37,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471914240] [2023-12-19 03:55:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471914240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:37,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:37,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:55:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718419653] [2023-12-19 03:55:37,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:37,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:37,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:37,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:37,945 INFO L87 Difference]: Start difference. First operand 147604 states and 163641 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 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 03:55:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:40,406 INFO L93 Difference]: Finished difference Result 277081 states and 307973 transitions. [2023-12-19 03:55:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:40,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 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 525 [2023-12-19 03:55:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:40,597 INFO L225 Difference]: With dead ends: 277081 [2023-12-19 03:55:40,597 INFO L226 Difference]: Without dead ends: 146013 [2023-12-19 03:55:40,636 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 03:55:40,636 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:40,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 295 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 03:55:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146013 states. [2023-12-19 03:55:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146013 to 146012. [2023-12-19 03:55:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146012 states, 146011 states have (on average 1.1066358014122224) internal successors, (161581), 146011 states have internal predecessors, (161581), 0 states have call successors, (0), 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 03:55:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146012 states to 146012 states and 161581 transitions. [2023-12-19 03:55:42,731 INFO L78 Accepts]: Start accepts. Automaton has 146012 states and 161581 transitions. Word has length 525 [2023-12-19 03:55:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:42,732 INFO L495 AbstractCegarLoop]: Abstraction has 146012 states and 161581 transitions. [2023-12-19 03:55:42,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 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 03:55:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 146012 states and 161581 transitions. [2023-12-19 03:55:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2023-12-19 03:55:42,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:42,759 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:55:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 03:55:42,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:42,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash -665948039, now seen corresponding path program 1 times [2023-12-19 03:55:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786294365] [2023-12-19 03:55:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 784 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-19 03:55:43,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:43,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786294365] [2023-12-19 03:55:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786294365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:43,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:43,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:43,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220503673] [2023-12-19 03:55:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:43,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:43,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:43,157 INFO L87 Difference]: Start difference. First operand 146012 states and 161581 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 03:55:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:46,948 INFO L93 Difference]: Finished difference Result 291243 states and 322384 transitions. [2023-12-19 03:55:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:46,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 563 [2023-12-19 03:55:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:47,146 INFO L225 Difference]: With dead ends: 291243 [2023-12-19 03:55:47,147 INFO L226 Difference]: Without dead ends: 146019 [2023-12-19 03:55:47,386 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 03:55:47,387 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 831 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:47,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1431 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:55:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146019 states. [2023-12-19 03:55:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146019 to 146005. [2023-12-19 03:55:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146005 states, 146004 states have (on average 1.0816279006054628) internal successors, (157922), 146004 states have internal predecessors, (157922), 0 states have call successors, (0), 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 03:55:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146005 states to 146005 states and 157922 transitions. [2023-12-19 03:55:48,991 INFO L78 Accepts]: Start accepts. Automaton has 146005 states and 157922 transitions. Word has length 563 [2023-12-19 03:55:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:48,992 INFO L495 AbstractCegarLoop]: Abstraction has 146005 states and 157922 transitions. [2023-12-19 03:55:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 03:55:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 146005 states and 157922 transitions. [2023-12-19 03:55:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 03:55:49,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:49,265 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:55:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 03:55:49,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:49,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash -649556935, now seen corresponding path program 1 times [2023-12-19 03:55:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:49,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660646926] [2023-12-19 03:55:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-19 03:55:49,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660646926] [2023-12-19 03:55:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660646926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:49,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978567610] [2023-12-19 03:55:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:49,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:49,458 INFO L87 Difference]: Start difference. First operand 146005 states and 157922 transitions. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 03:55:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:52,987 INFO L93 Difference]: Finished difference Result 295133 states and 318943 transitions. [2023-12-19 03:55:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 594 [2023-12-19 03:55:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:53,186 INFO L225 Difference]: With dead ends: 295133 [2023-12-19 03:55:53,187 INFO L226 Difference]: Without dead ends: 147552 [2023-12-19 03:55:53,230 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 03:55:53,230 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 996 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:53,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1576 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:55:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147552 states. [2023-12-19 03:55:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147552 to 142035. [2023-12-19 03:55:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142035 states, 142034 states have (on average 1.0525367165608235) internal successors, (149496), 142034 states have internal predecessors, (149496), 0 states have call successors, (0), 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 03:55:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142035 states to 142035 states and 149496 transitions. [2023-12-19 03:55:55,110 INFO L78 Accepts]: Start accepts. Automaton has 142035 states and 149496 transitions. Word has length 594 [2023-12-19 03:55:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:55,111 INFO L495 AbstractCegarLoop]: Abstraction has 142035 states and 149496 transitions. [2023-12-19 03:55:55,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 03:55:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 142035 states and 149496 transitions. [2023-12-19 03:55:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 03:55:55,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:55,128 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:55:55,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 03:55:55,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:55,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:55,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1738744880, now seen corresponding path program 1 times [2023-12-19 03:55:55,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:55,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143124735] [2023-12-19 03:55:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 734 proven. 75 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-19 03:55:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143124735] [2023-12-19 03:55:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143124735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824256777] [2023-12-19 03:55:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:56,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:56,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:56,008 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 03:55:56,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 03:55:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:56,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:55:56,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 872 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 03:55:56,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824256777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:56,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:56,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-19 03:55:56,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496451770] [2023-12-19 03:55:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:55:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:55:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:55:56,941 INFO L87 Difference]: Start difference. First operand 142035 states and 149496 transitions. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 03:56:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:00,471 INFO L93 Difference]: Finished difference Result 269900 states and 284575 transitions. [2023-12-19 03:56:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:56:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 638 [2023-12-19 03:56:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:00,656 INFO L225 Difference]: With dead ends: 269900 [2023-12-19 03:56:00,656 INFO L226 Difference]: Without dead ends: 143612 [2023-12-19 03:56:00,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:56:00,730 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 2244 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:00,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 744 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:56:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143612 states. [2023-12-19 03:56:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143612 to 142031. [2023-12-19 03:56:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142031 states, 142030 states have (on average 1.0505808631979159) internal successors, (149214), 142030 states have internal predecessors, (149214), 0 states have call successors, (0), 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 03:56:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142031 states to 142031 states and 149214 transitions. [2023-12-19 03:56:02,602 INFO L78 Accepts]: Start accepts. Automaton has 142031 states and 149214 transitions. Word has length 638 [2023-12-19 03:56:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:02,602 INFO L495 AbstractCegarLoop]: Abstraction has 142031 states and 149214 transitions. [2023-12-19 03:56:02,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 03:56:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 142031 states and 149214 transitions. [2023-12-19 03:56:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-12-19 03:56:02,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:02,641 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:02,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 03:56:02,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 03:56:02,850 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:02,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash -439525593, now seen corresponding path program 1 times [2023-12-19 03:56:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888626240] [2023-12-19 03:56:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:02,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-12-19 03:56:03,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:03,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888626240] [2023-12-19 03:56:03,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888626240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:03,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:03,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:03,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141390231] [2023-12-19 03:56:03,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:03,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:03,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:03,101 INFO L87 Difference]: Start difference. First operand 142031 states and 149214 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 03:56:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:06,430 INFO L93 Difference]: Finished difference Result 282493 states and 296848 transitions. [2023-12-19 03:56:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:06,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 644 [2023-12-19 03:56:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:06,635 INFO L225 Difference]: With dead ends: 282493 [2023-12-19 03:56:06,635 INFO L226 Difference]: Without dead ends: 141250 [2023-12-19 03:56:06,714 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 03:56:06,714 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 826 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:06,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1744 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:56:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141250 states. [2023-12-19 03:56:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141250 to 138881. [2023-12-19 03:56:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138881 states, 138880 states have (on average 1.0420218894009217) internal successors, (144716), 138880 states have internal predecessors, (144716), 0 states have call successors, (0), 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 03:56:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138881 states to 138881 states and 144716 transitions. [2023-12-19 03:56:08,486 INFO L78 Accepts]: Start accepts. Automaton has 138881 states and 144716 transitions. Word has length 644 [2023-12-19 03:56:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:08,486 INFO L495 AbstractCegarLoop]: Abstraction has 138881 states and 144716 transitions. [2023-12-19 03:56:08,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 03:56:08,487 INFO L276 IsEmpty]: Start isEmpty. Operand 138881 states and 144716 transitions. [2023-12-19 03:56:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-19 03:56:08,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:08,505 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:56:08,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 03:56:08,505 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:08,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1200217463, now seen corresponding path program 1 times [2023-12-19 03:56:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:08,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97278103] [2023-12-19 03:56:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-19 03:56:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97278103] [2023-12-19 03:56:08,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97278103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:08,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:08,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491879408] [2023-12-19 03:56:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:08,798 INFO L87 Difference]: Start difference. First operand 138881 states and 144716 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 03:56:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:12,563 INFO L93 Difference]: Finished difference Result 287221 states and 299975 transitions. [2023-12-19 03:56:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 674 [2023-12-19 03:56:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:12,776 INFO L225 Difference]: With dead ends: 287221 [2023-12-19 03:56:12,776 INFO L226 Difference]: Without dead ends: 161726 [2023-12-19 03:56:12,842 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 03:56:12,843 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 817 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:12,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 852 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:56:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161726 states. [2023-12-19 03:56:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161726 to 138881. [2023-12-19 03:56:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138881 states, 138880 states have (on average 1.042086693548387) internal successors, (144725), 138880 states have internal predecessors, (144725), 0 states have call successors, (0), 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 03:56:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138881 states to 138881 states and 144725 transitions. [2023-12-19 03:56:14,698 INFO L78 Accepts]: Start accepts. Automaton has 138881 states and 144725 transitions. Word has length 674 [2023-12-19 03:56:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:14,699 INFO L495 AbstractCegarLoop]: Abstraction has 138881 states and 144725 transitions. [2023-12-19 03:56:14,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 03:56:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 138881 states and 144725 transitions. [2023-12-19 03:56:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-19 03:56:14,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:14,717 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:56:14,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:56:14,718 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:14,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1705054753, now seen corresponding path program 1 times [2023-12-19 03:56:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770590994] [2023-12-19 03:56:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-19 03:56:15,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:15,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770590994] [2023-12-19 03:56:15,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770590994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:15,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:15,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344980395] [2023-12-19 03:56:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:15,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:15,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:15,282 INFO L87 Difference]: Start difference. First operand 138881 states and 144725 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 03:56:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:18,949 INFO L93 Difference]: Finished difference Result 309260 states and 323154 transitions. [2023-12-19 03:56:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:18,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 691 [2023-12-19 03:56:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:19,220 INFO L225 Difference]: With dead ends: 309260 [2023-12-19 03:56:19,220 INFO L226 Difference]: Without dead ends: 181400 [2023-12-19 03:56:19,267 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 03:56:19,267 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 830 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:19,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 840 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:56:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181400 states. [2023-12-19 03:56:21,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181400 to 153046. [2023-12-19 03:56:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153046 states, 153045 states have (on average 1.0394132444705806) internal successors, (159077), 153045 states have internal predecessors, (159077), 0 states have call successors, (0), 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 03:56:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153046 states to 153046 states and 159077 transitions. [2023-12-19 03:56:21,804 INFO L78 Accepts]: Start accepts. Automaton has 153046 states and 159077 transitions. Word has length 691 [2023-12-19 03:56:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:21,804 INFO L495 AbstractCegarLoop]: Abstraction has 153046 states and 159077 transitions. [2023-12-19 03:56:21,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 03:56:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 153046 states and 159077 transitions. [2023-12-19 03:56:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-12-19 03:56:21,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:21,835 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 03:56:21,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:21,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1722513588, now seen corresponding path program 1 times [2023-12-19 03:56:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:21,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983144107] [2023-12-19 03:56:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:21,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 840 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-19 03:56:22,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:22,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983144107] [2023-12-19 03:56:22,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983144107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:22,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:22,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:56:22,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930785286] [2023-12-19 03:56:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:22,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:56:22,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:22,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:56:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:56:22,555 INFO L87 Difference]: Start difference. First operand 153046 states and 159077 transitions. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 03:56:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:29,035 INFO L93 Difference]: Finished difference Result 421166 states and 437965 transitions. [2023-12-19 03:56:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:56:29,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 696 [2023-12-19 03:56:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:29,469 INFO L225 Difference]: With dead ends: 421166 [2023-12-19 03:56:29,469 INFO L226 Difference]: Without dead ends: 268121 [2023-12-19 03:56:29,543 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 03:56:29,544 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1690 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6153 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 7086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 6153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:29,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 936 Invalid, 7086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 6153 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 03:56:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268121 states. [2023-12-19 03:56:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268121 to 242801. [2023-12-19 03:56:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242801 states, 242800 states have (on average 1.0358731466227347) internal successors, (251510), 242800 states have internal predecessors, (251510), 0 states have call successors, (0), 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 03:56:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242801 states to 242801 states and 251510 transitions. [2023-12-19 03:56:33,101 INFO L78 Accepts]: Start accepts. Automaton has 242801 states and 251510 transitions. Word has length 696 [2023-12-19 03:56:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:33,101 INFO L495 AbstractCegarLoop]: Abstraction has 242801 states and 251510 transitions. [2023-12-19 03:56:33,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 03:56:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 242801 states and 251510 transitions. [2023-12-19 03:56:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2023-12-19 03:56:33,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:33,131 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 03:56:33,131 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:33,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1184360254, now seen corresponding path program 1 times [2023-12-19 03:56:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59966544] [2023-12-19 03:56:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-19 03:56:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59966544] [2023-12-19 03:56:33,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59966544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:33,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:33,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:33,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174120759] [2023-12-19 03:56:33,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:33,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:33,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:33,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:33,781 INFO L87 Difference]: Start difference. First operand 242801 states and 251510 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 03:56:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:37,682 INFO L93 Difference]: Finished difference Result 486404 states and 503824 transitions. [2023-12-19 03:56:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 709 [2023-12-19 03:56:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:38,062 INFO L225 Difference]: With dead ends: 486404 [2023-12-19 03:56:38,062 INFO L226 Difference]: Without dead ends: 241242 [2023-12-19 03:56:38,185 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 03:56:38,186 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 611 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1691 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:56:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241242 states. [2023-12-19 03:56:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241242 to 236485. [2023-12-19 03:56:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236485 states, 236484 states have (on average 1.0315750748465013) internal successors, (243951), 236484 states have internal predecessors, (243951), 0 states have call successors, (0), 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 03:56:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236485 states to 236485 states and 243951 transitions. [2023-12-19 03:56:41,642 INFO L78 Accepts]: Start accepts. Automaton has 236485 states and 243951 transitions. Word has length 709 [2023-12-19 03:56:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:41,643 INFO L495 AbstractCegarLoop]: Abstraction has 236485 states and 243951 transitions. [2023-12-19 03:56:41,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 03:56:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 236485 states and 243951 transitions. [2023-12-19 03:56:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2023-12-19 03:56:41,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:41,665 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 03:56:41,665 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:41,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 890600627, now seen corresponding path program 1 times [2023-12-19 03:56:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654902259] [2023-12-19 03:56:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-19 03:56:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654902259] [2023-12-19 03:56:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654902259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:41,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:41,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19328314] [2023-12-19 03:56:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:41,935 INFO L87 Difference]: Start difference. First operand 236485 states and 243951 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 03:56:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:46,615 INFO L93 Difference]: Finished difference Result 498936 states and 515408 transitions. [2023-12-19 03:56:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 715 [2023-12-19 03:56:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:47,084 INFO L225 Difference]: With dead ends: 498936 [2023-12-19 03:56:47,084 INFO L226 Difference]: Without dead ends: 273470 [2023-12-19 03:56:47,189 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 03:56:47,193 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 880 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:47,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 778 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:56:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273470 states. [2023-12-19 03:56:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273470 to 217579. [2023-12-19 03:56:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217579 states, 217578 states have (on average 1.0292952412468173) internal successors, (223952), 217578 states have internal predecessors, (223952), 0 states have call successors, (0), 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 03:56:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217579 states to 217579 states and 223952 transitions. [2023-12-19 03:56:50,583 INFO L78 Accepts]: Start accepts. Automaton has 217579 states and 223952 transitions. Word has length 715 [2023-12-19 03:56:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:50,583 INFO L495 AbstractCegarLoop]: Abstraction has 217579 states and 223952 transitions. [2023-12-19 03:56:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 03:56:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 217579 states and 223952 transitions. [2023-12-19 03:56:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-19 03:56:50,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:50,614 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:50,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:56:50,615 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:50,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash 92702687, now seen corresponding path program 1 times [2023-12-19 03:56:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:50,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809718569] [2023-12-19 03:56:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:50,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 609 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2023-12-19 03:56:51,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809718569] [2023-12-19 03:56:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809718569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:51,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:51,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:51,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690561717] [2023-12-19 03:56:51,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:51,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:51,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:51,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:51,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:51,091 INFO L87 Difference]: Start difference. First operand 217579 states and 223952 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 03:56:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:55,285 INFO L93 Difference]: Finished difference Result 443786 states and 457262 transitions. [2023-12-19 03:56:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 769 [2023-12-19 03:56:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:55,672 INFO L225 Difference]: With dead ends: 443786 [2023-12-19 03:56:55,672 INFO L226 Difference]: Without dead ends: 241165 [2023-12-19 03:56:55,727 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 03:56:55,728 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 949 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:55,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 488 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:56:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241165 states. [2023-12-19 03:56:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241165 to 239590. [2023-12-19 03:56:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239590 states, 239589 states have (on average 1.0279770774117343) internal successors, (246292), 239589 states have internal predecessors, (246292), 0 states have call successors, (0), 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 03:56:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239590 states to 239590 states and 246292 transitions. [2023-12-19 03:56:59,511 INFO L78 Accepts]: Start accepts. Automaton has 239590 states and 246292 transitions. Word has length 769 [2023-12-19 03:56:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:59,512 INFO L495 AbstractCegarLoop]: Abstraction has 239590 states and 246292 transitions. [2023-12-19 03:56:59,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 03:56:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 239590 states and 246292 transitions. [2023-12-19 03:56:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2023-12-19 03:56:59,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:59,648 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:59,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 03:56:59,648 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:59,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1917701791, now seen corresponding path program 1 times [2023-12-19 03:56:59,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897739490] [2023-12-19 03:56:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 509 proven. 156 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 03:57:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897739490] [2023-12-19 03:57:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897739490] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:57:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248391356] [2023-12-19 03:57:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:01,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:57:01,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:57:01,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:57:01,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 03:57:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:01,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 03:57:01,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:57:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-19 03:57:02,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:57:02,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248391356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:57:02,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:57:02,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 03:57:02,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127791008] [2023-12-19 03:57:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:57:02,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:57:02,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:57:02,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:57:02,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:57:02,231 INFO L87 Difference]: Start difference. First operand 239590 states and 246292 transitions. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 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 03:57:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:57:08,596 INFO L93 Difference]: Finished difference Result 498941 states and 512835 transitions. [2023-12-19 03:57:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:57:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 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 1296 [2023-12-19 03:57:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:09,009 INFO L225 Difference]: With dead ends: 498941 [2023-12-19 03:57:09,009 INFO L226 Difference]: Without dead ends: 270372 [2023-12-19 03:57:09,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1299 GetRequests, 1294 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:57:09,111 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1609 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 6211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:09,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 742 Invalid, 6211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 03:57:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270372 states. [2023-12-19 03:57:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270372 to 256909. [2023-12-19 03:57:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256909 states, 256908 states have (on average 1.027609105204976) internal successors, (264001), 256908 states have internal predecessors, (264001), 0 states have call successors, (0), 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 03:57:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256909 states to 256909 states and 264001 transitions. [2023-12-19 03:57:12,728 INFO L78 Accepts]: Start accepts. Automaton has 256909 states and 264001 transitions. Word has length 1296 [2023-12-19 03:57:12,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:12,729 INFO L495 AbstractCegarLoop]: Abstraction has 256909 states and 264001 transitions. [2023-12-19 03:57:12,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 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 03:57:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 256909 states and 264001 transitions. [2023-12-19 03:57:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1548 [2023-12-19 03:57:12,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:12,872 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:12,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 03:57:13,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 03:57:13,073 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:13,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2109688474, now seen corresponding path program 1 times [2023-12-19 03:57:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836605636] [2023-12-19 03:57:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1977 backedges. 1446 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-12-19 03:57:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836605636] [2023-12-19 03:57:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836605636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:57:14,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:57:14,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:57:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343376722] [2023-12-19 03:57:14,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:57:14,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:57:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:57:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:57:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:57:14,331 INFO L87 Difference]: Start difference. First operand 256909 states and 264001 transitions. Second operand has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 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 03:57:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:57:18,044 INFO L93 Difference]: Finished difference Result 501238 states and 515264 transitions. [2023-12-19 03:57:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:57:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 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 1547 [2023-12-19 03:57:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:18,419 INFO L225 Difference]: With dead ends: 501238 [2023-12-19 03:57:18,419 INFO L226 Difference]: Without dead ends: 256131 [2023-12-19 03:57:18,875 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 03:57:18,875 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 769 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:18,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1648 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:57:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256131 states. [2023-12-19 03:57:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256131 to 252178. [2023-12-19 03:57:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252178 states, 252177 states have (on average 1.025454343576139) internal successors, (258596), 252177 states have internal predecessors, (258596), 0 states have call successors, (0), 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 03:57:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252178 states to 252178 states and 258596 transitions. [2023-12-19 03:57:22,244 INFO L78 Accepts]: Start accepts. Automaton has 252178 states and 258596 transitions. Word has length 1547 [2023-12-19 03:57:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:22,245 INFO L495 AbstractCegarLoop]: Abstraction has 252178 states and 258596 transitions. [2023-12-19 03:57:22,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 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 03:57:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 252178 states and 258596 transitions. [2023-12-19 03:57:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1581 [2023-12-19 03:57:22,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:22,681 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 03:57:22,682 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:22,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:22,682 INFO L85 PathProgramCache]: Analyzing trace with hash 619399767, now seen corresponding path program 1 times [2023-12-19 03:57:22,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:22,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546982364] [2023-12-19 03:57:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 793 proven. 157 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2023-12-19 03:57:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546982364] [2023-12-19 03:57:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546982364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:57:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001856410] [2023-12-19 03:57:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:24,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:57:24,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:57:24,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:57:24,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 03:57:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:25,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 03:57:25,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:57:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 1047 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-19 03:57:25,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:57:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001856410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:57:25,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:57:25,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 03:57:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184395606] [2023-12-19 03:57:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:57:25,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:57:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:57:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:57:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:57:25,587 INFO L87 Difference]: Start difference. First operand 252178 states and 258596 transitions. Second operand has 4 states, 4 states have (on average 304.25) internal successors, (1217), 3 states have internal predecessors, (1217), 0 states have call successors, (0), 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 03:57:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:57:32,268 INFO L93 Difference]: Finished difference Result 539890 states and 553751 transitions. [2023-12-19 03:57:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:57:32,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 304.25) internal successors, (1217), 3 states have internal predecessors, (1217), 0 states have call successors, (0), 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 1580 [2023-12-19 03:57:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:32,783 INFO L225 Difference]: With dead ends: 539890 [2023-12-19 03:57:32,783 INFO L226 Difference]: Without dead ends: 298733 [2023-12-19 03:57:32,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:57:32,893 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1424 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4891 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 5897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 4891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:32,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 649 Invalid, 5897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 4891 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 03:57:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298733 states. [2023-12-19 03:57:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298733 to 268717. [2023-12-19 03:57:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268717 states, 268716 states have (on average 1.0250189791452686) internal successors, (275439), 268716 states have internal predecessors, (275439), 0 states have call successors, (0), 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 03:57:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268717 states to 268717 states and 275439 transitions. [2023-12-19 03:57:37,209 INFO L78 Accepts]: Start accepts. Automaton has 268717 states and 275439 transitions. Word has length 1580 [2023-12-19 03:57:37,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:37,209 INFO L495 AbstractCegarLoop]: Abstraction has 268717 states and 275439 transitions. [2023-12-19 03:57:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.25) internal successors, (1217), 3 states have internal predecessors, (1217), 0 states have call successors, (0), 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 03:57:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 268717 states and 275439 transitions. [2023-12-19 03:57:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1632 [2023-12-19 03:57:37,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:37,354 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:37,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 03:57:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 03:57:37,555 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:37,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash 14561427, now seen corresponding path program 1 times [2023-12-19 03:57:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:37,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798031402] [2023-12-19 03:57:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 1078 proven. 0 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2023-12-19 03:57:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:38,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798031402] [2023-12-19 03:57:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798031402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:57:38,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:57:38,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:57:38,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144773308] [2023-12-19 03:57:38,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:57:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:57:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:57:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:57:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:57:38,870 INFO L87 Difference]: Start difference. First operand 268717 states and 275439 transitions. Second operand has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 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 03:57:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:57:42,328 INFO L93 Difference]: Finished difference Result 524054 states and 537384 transitions. [2023-12-19 03:57:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:57:42,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 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 1631 [2023-12-19 03:57:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:42,719 INFO L225 Difference]: With dead ends: 524054 [2023-12-19 03:57:42,720 INFO L226 Difference]: Without dead ends: 269508 [2023-12-19 03:57:43,150 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 03:57:43,151 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 50 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:43,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1765 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:57:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269508 states. [2023-12-19 03:57:46,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269508 to 269505. [2023-12-19 03:57:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269505 states, 269504 states have (on average 1.02499777368796) internal successors, (276241), 269504 states have internal predecessors, (276241), 0 states have call successors, (0), 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 03:57:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269505 states to 269505 states and 276241 transitions. [2023-12-19 03:57:46,537 INFO L78 Accepts]: Start accepts. Automaton has 269505 states and 276241 transitions. Word has length 1631 [2023-12-19 03:57:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:46,538 INFO L495 AbstractCegarLoop]: Abstraction has 269505 states and 276241 transitions. [2023-12-19 03:57:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 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 03:57:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 269505 states and 276241 transitions. [2023-12-19 03:57:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1806 [2023-12-19 03:57:47,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:47,045 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:57:47,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 03:57:47,046 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:47,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1839362495, now seen corresponding path program 1 times [2023-12-19 03:57:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:47,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223124640] [2023-12-19 03:57:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 1999 proven. 0 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2023-12-19 03:57:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:47,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223124640] [2023-12-19 03:57:47,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223124640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:57:47,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:57:47,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:57:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66694307] [2023-12-19 03:57:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:57:47,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:57:47,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:57:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:57:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:57:47,904 INFO L87 Difference]: Start difference. First operand 269505 states and 276241 transitions. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 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 03:57:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:57:52,125 INFO L93 Difference]: Finished difference Result 526412 states and 539821 transitions. [2023-12-19 03:57:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:57:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 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 1805 [2023-12-19 03:57:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:52,547 INFO L225 Difference]: With dead ends: 526412 [2023-12-19 03:57:52,547 INFO L226 Difference]: Without dead ends: 271078 [2023-12-19 03:57:52,646 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 03:57:52,646 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 880 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:52,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1463 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:57:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271078 states. [2023-12-19 03:57:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271078 to 262421. [2023-12-19 03:57:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262421 states, 262420 states have (on average 1.023264232909077) internal successors, (268525), 262420 states have internal predecessors, (268525), 0 states have call successors, (0), 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 03:57:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262421 states to 262421 states and 268525 transitions. [2023-12-19 03:57:56,150 INFO L78 Accepts]: Start accepts. Automaton has 262421 states and 268525 transitions. Word has length 1805 [2023-12-19 03:57:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:56,151 INFO L495 AbstractCegarLoop]: Abstraction has 262421 states and 268525 transitions. [2023-12-19 03:57:56,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 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 03:57:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 262421 states and 268525 transitions. [2023-12-19 03:57:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1941 [2023-12-19 03:57:56,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:56,332 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:57:56,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 03:57:56,332 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:56,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash 108055951, now seen corresponding path program 1 times [2023-12-19 03:57:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422550496] [2023-12-19 03:57:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 1071 proven. 1411 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2023-12-19 03:57:59,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422550496] [2023-12-19 03:57:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422550496] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:57:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191811169] [2023-12-19 03:57:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:59,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:57:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:57:59,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:57:59,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 03:58:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:58:00,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:58:00,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:58:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 1218 proven. 0 refuted. 0 times theorem prover too weak. 3296 trivial. 0 not checked. [2023-12-19 03:58:00,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:58:00,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191811169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:58:00,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:58:00,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 03:58:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527385598] [2023-12-19 03:58:00,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:58:00,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:58:00,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:58:00,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:58:00,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:58:00,423 INFO L87 Difference]: Start difference. First operand 262421 states and 268525 transitions. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 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 03:58:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:58:03,968 INFO L93 Difference]: Finished difference Result 510665 states and 522719 transitions. [2023-12-19 03:58:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:58:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 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 1940 [2023-12-19 03:58:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:58:04,324 INFO L225 Difference]: With dead ends: 510665 [2023-12-19 03:58:04,324 INFO L226 Difference]: Without dead ends: 262415 [2023-12-19 03:58:04,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1947 GetRequests, 1940 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:58:04,396 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 668 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:58:04,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1736 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:58:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262415 states. [2023-12-19 03:58:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262415 to 260052. [2023-12-19 03:58:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260052 states, 260051 states have (on average 1.0219956854616978) internal successors, (265771), 260051 states have internal predecessors, (265771), 0 states have call successors, (0), 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 03:58:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260052 states to 260052 states and 265771 transitions. [2023-12-19 03:58:07,926 INFO L78 Accepts]: Start accepts. Automaton has 260052 states and 265771 transitions. Word has length 1940 [2023-12-19 03:58:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:58:07,927 INFO L495 AbstractCegarLoop]: Abstraction has 260052 states and 265771 transitions. [2023-12-19 03:58:07,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 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 03:58:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 260052 states and 265771 transitions. [2023-12-19 03:58:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1974 [2023-12-19 03:58:08,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:58:08,085 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:08,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 03:58:08,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:58:08,287 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:58:08,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:58:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash -880145524, now seen corresponding path program 1 times [2023-12-19 03:58:08,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:58:08,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632661920] [2023-12-19 03:58:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:58:08,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:58:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:58:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 1156 proven. 159 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2023-12-19 03:58:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:58:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632661920] [2023-12-19 03:58:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632661920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:58:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069741032] [2023-12-19 03:58:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:58:11,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:58:11,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:58:11,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:58:11,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 03:58:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:58:11,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 03:58:11,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:58:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 1156 proven. 159 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2023-12-19 03:58:13,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 03:58:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 1657 trivial. 0 not checked. [2023-12-19 03:58:14,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069741032] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 03:58:14,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 03:58:14,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-12-19 03:58:14,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080400626] [2023-12-19 03:58:14,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:58:14,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:58:14,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:58:14,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:58:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:58:14,069 INFO L87 Difference]: Start difference. First operand 260052 states and 265771 transitions. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)